[Federal Register Volume 78, Number 46 (Friday, March 8, 2013)]
[Notices]
[Pages 15093-15109]
[FR Doc No: 2013-05413]

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SECURITIES AND EXCHANGE COMMISSION

[Release No. 34-69027; File No. SR-BOX-2013-01]

Self-Regulatory Organizations; BOX Options Exchange LLC; Notice
of Filing of Proposed Rule Change, as Modified by Amendment No. 1,
Regarding Complex Orders

March 4, 2013.
    Pursuant to Section 19(b)(1) of the Securities Exchange Act of 1934
(the ``Act''),\1\ and Rule 19b-4 thereunder,\2\ notice is hereby given
that on February 20, 2013, BOX Options Exchange LLC (the ``Exchange''
or ``BOX'') filed with the Securities and Exchange Commission
(``Commission'') the proposed rule change as described in Items I, II,
and III below, which Items have been prepared by the Exchange. On
February 27, 2013, the Exchange filed Amendment No. 1 to the proposed
rule change. The Commission is publishing this notice to solicit
comments on the proposed rule change, as amended, from interested
persons.
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    \1\ 15 U.S.C. 78s(b)(1).
    \2\ 17 CFR 240.19b-4 .
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I. Self-Regulatory Organization's Statement of the Terms of Substance
of the Proposed Rule Change

    The Exchange proposes to amend its rules related to complex orders.
The text of the proposed rule change is available from the principal
office of the Exchange, at the Commission's Public Reference Room and
also on the Exchange's Internet Web site at http://boxexchange.com.

II. Self-Regulatory Organization's Statement of the Purpose of, and
Statutory Basis for, the Proposed Rule Change

    In its filing with the Commission, the self-regulatory organization
included statements concerning the purpose of, and basis for, the
proposed rule change and discussed any comments it received on the
proposed rule change. The text of these statements may be examined at
the places specified in Item IV below. The self-regulatory organization
has prepared summaries, set forth in Sections A, B, and C below, of the
most significant aspects of such statements.

(A) Self-Regulatory Organization's Statement of the Purpose of, and
Statutory Basis for, the Proposed Rule Change

1. Purpose
    The Exchange proposes to amend the rules related to trading Complex
Orders \3\ on BOX Market LLC (``BOX''), the options trading facility of
the Exchange. In particular, the Exchange is proposing rules to
facilitate interaction on a continuous and real-time basis among orders
on BOX, consisting of

Complex Orders on the Complex Order Book \4\ and interest on the BOX
Book.\5\
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    \3\ ``Complex Order'' is defined as ``any order involving the
simultaneous purchase and/or sale of two or more different options
series in the same underlying security, for the same account, in a
ratio that is equal to or greater than one-to-three (.333) and less
than or equal to three-to-one (3.00) and for the purpose of
executing a particular investment strategy.'' See proposed Rule
7240(a)(5).
    \4\ ``Complex Order Book'' is defined as ``the electronic book
of Complex Orders maintained by the BOX Trading Host.'' See proposed
Rule 7240(a)(6).
    \5\ ``BOX Book'' (also the ``Central Order Book'') is defined as
``the electronic book of orders on each single series of options
maintained by the BOX Trading Host.'' See proposed Rule 100(a)(10).
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    The proposed rule change generally sets forth rules to facilitate
and permit (i) Complex Orders to trade with interest on the BOX Book
and (ii) the combination of a Complex Order and an order on one of its
component single option series trading on the BOX Book (each a ``Leg'')
to trade with orders on the other component Leg on the BOX Book.
    The Exchange believes this proposal is a reasonable modification to
its rules, designed to facilitate increased interaction between orders
on the BOX Book and orders on the Complex Order Book, and to do so in
such a manner as to ensure a dynamic, real-time trading mechanism that
maximizes the opportunity for trade executions for both Complex Orders
and orders on single option series. The Exchange believes that it is
appropriate and consistent with the Act, for the purpose of clarity and
in the public interest, to (i) adopt the proposed amendments to Rules
100(a)(10) and 100(a)(33), (ii) adopt the proposed amendments to Rule
7110(c)(2), (iii) adopt the proposed amendments to Rule 7130(a)(2)(iv),
(iv) adopt the proposed amendments to Rules 7150(f)(3), 7150(i) and
7150(j), and (v) delete in its entirety the existing provisions of Rule
7240 (Complex Orders) and adopt the proposed Rule 7240.
a. Principles of Complex Orders and Interaction With the BOX Book
    The proposed rule change will require that, before executing
against another Complex Order, an executable inbound Complex Order on
BOX will execute first against interest on the BOX Book if the net
price of such interest on the BOX Book is equal to the best price on
the Complex Order Book,\6\ provided that each of its component Legs is
equal to or better than its respective NBBO.
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    \6\ See proposed Rule 7240(b)(3)(i).
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    The Exchange believes this proposed rule change represents two
improvements to the rules on other options exchanges regarding Complex
Order trading: (i) The priority of the BOX Book is not limited to ``if
any of the bids or offers established in the marketplace consist of a
Customer Order'' \7\ and (ii) any Complex Order execution, whether
against another Complex Order or against interest on the BOX Book, will
be at a price at least equal to the cNBBO.\8\
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    \7\ See, e.g., International Securities Exchange (``ISE'') Rule
722(b)(2) and Commentary .08(c)(iii)(A) to PHLX Rule 1080.
    \8\ ``cNBBO'' is defined as the ``the best net bid and offer
price for a Complex Order Strategy based on the NBBO for the
individual options components of such Strategy.'' See proposed Rule
7240(a)(3).
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    Consequently, a Complex Order will execute against other Complex
Orders resting on the Complex Order Book only if the net price is
better than cBBO \9\ and is equal to or better than the cNBBO,\10\
except in the case of Complex Orders on Non-standard Strategies (as
defined below). Complex Order executions on BOX will be subject to an
NBBO price control filtering process similar to that presently provided
for the trading of individual options series on BOX.\11\ Thus, where
two Complex Orders trade against each other, the resulting execution
prices will be at a price equal to or better than NBBO and BOX best bid
or offer (``BBO'') for each of the component Legs.\12\
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    \9\ ``cBBO'' is defined as ``the best net bid and offer price
for a Complex Order Strategy based on the BBO on the BOX Book for
the individual options components of such Strategy.'' See proposed
Rule 7240(a)(1).
    \10\ See proposed Rules 7240(b)(3)(i) and 7240(b)(3)(iii)(A).
    \11\ See proposed Rule 7240(b)(3)(iii). See existing Rule
7130(b) for a more detailed description of the current filtering
process for orders inbound for the BOX Book.
    \12\ See proposed Rule 7240(b)(3)(ii).
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    The exception to the priority of the BOX Book is the execution of a
Complex Order on Strategies \13\ that have a Leg ratio other than one-
to-one (herein referred to as ``Non-standard Strategies'') as provided
in proposed Rule 7240(b)(2)(ii). Complex Orders for Non-standard
Strategies will execute against interest on the BOX Book for the
individual Legs of the Strategy for all of the quantity available at
the best price in a permissible ratio until the quantities remaining on
the BOX Book are insufficient to execute against the Complex Order
while respecting the ratio. Following such execution, the remaining
quantity of the Complex Order may execute against other Complex Orders
and the component Legs of the Complex Order may trade at prices equal
to the corresponding prices on the BOX Book (for more detail, see
discussion in 2(d) and Example 5 below related to Non-standard
Strategies).
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    \13\ ``Complex Order Strategy'' or ``Strategy'' is defined as
``a particular combination of components of a Complex Order and
their ratios to one another. BOX will assign a strategy identifier
to each Strategy.'' See proposed Rule 7240(a)(7).
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    The Exchange proposes to apply the straightforward principle of
allowing execution of a Complex Order against another Complex Order
when interest on the BOX Book at the same net price has already been
executed. Thus, the execution price will be at a price better than cBBO
(except in the case of insufficient quantity for Non-standard
Strategies where the execution could occur at a price equal to cBBO).
In the case of Non-standard Strategies, interest on the BOX Book will
still have priority and be executed before a Complex Order, to the
extent that there is sufficient quantity on the BOX Book to respect the
ratio of the Strategy.
b. Complex Order Priority and Execution
    The Exchange proposes new provisions in Rule 7240(b)(2) and (3)
regarding Complex Order Priority and Execution. Where multiple Complex
Orders are at the same price and eligible for execution, they will
execute in time priority. BOX will ensure that any such executions are
at a price at least equal to cNBBO. The following discussion describes
the interaction between orders on the Complex Order Book and interest
on the BOX Book.
(1) Priority of Interest on the BOX Book Over Complex Orders
    Proposed Rule 7240(b)(3) provides that a Complex Order will be
automatically executed first against interest on the BOX Book for the
individual Legs of the Strategy to the extent the Complex Order can be
executed in the permissible ratio (as defined by the Strategy) and the
price is equal to or better than both the cNBBO and the best price on
the Complex Order Book.\14\ A Complex Order may be

executed at a net credit or debit price with one other Participant;
provided, however, that, except as set forth in Rule 7240(b)(2)(ii),
the price of at least one Leg of the Complex Order must trade at a
price that is at least one cent better than the corresponding bid or
offer in the marketplace.\15\
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    \14\ BOX operates a single order queue for execution processing
that precludes the possibility of a Complex Order and an order on
the BOX Book for a component Leg instrument receiving the same time
stamp. In other words, since orders on Legs and Complex Orders are
all received and processed in the same order queue, there is no
possibility, on BOX, of an order on a Leg and a Complex Order having
the same time stamp. For the same reason, an Implied Order on a
Strategy cannot have the same time stamp as a Complex Order on the
same Strategy. Similarly, a Legging Order cannot have the same time
stamp as an order on the same Leg because Legging Orders are
executed in time priority based on the time stamp of the Complex
Order causing the Legging Order to be generated (See discussion in
Section 3(b) ``Priority of Legging Orders'' of this Statement of
Purpose and the associated Example 8 for a more detailed explanation
of Legging Order execution priority). In any case, having the same
time stamp (even though impossible) would be irrelevant due to the
fact that interest on the BOX Book has priority over Complex Orders
at the same price and outright orders on Legs have priority over
Legging Orders at the same price.
    ``Implied Order'' is defined as ``a Complex Order at the cNBBO
that is derived from the orders at the BBO on the BOX Book for each
component Leg of a Strategy.'' See proposed Rule 7240(d)(1).
    ``Legging Order'' is defined as ``a limit order on the BOX Book
that represents one side of a Complex Order that is to buy or sell
an equal quantity of two options series resting on the BOX Complex
Order Book.'' See proposed Rule 7240(c)(1).
    \15\ See proposed Rule 7240(b)(2)(i).
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    Since a Complex Order will execute against another Complex Order
once all interest on the BOX Book at the same price has been executed,
any executions of two Complex Orders against each other will
necessarily be at a price better than cBBO (except in the case of
Complex Orders on Non-standard Strategies where the execution could
occur at a price equal to cBBO). This is because, having given priority
to the BOX Book, an opposite side Complex Order may execute against a
Complex Order once all interest at the same price on the Strategy has
been filled on the BOX Book (except in the case of Complex Orders on
Non-standard Strategies where, following execution against interest on
the BOX Book at the best price in a permissible ratio until the
quantities remaining on the BOX Book are insufficient to execute
against the Complex Order, the Complex Order may execute against
another Complex Order); thus, by definition, any subsequent trade of
the remaining quantity of the Complex Order takes place at a price
better than the cBBO updated for the executions against the BOX Book
(except in the case of Complex Orders on Non-standard Strategies where
the execution could occur at a price equal to cBBO).
    For additional discussion of the applicability of certain priority
rules, see Priority Rules section below.

Example 1: Priority of Interest on the BOX Book Over Complex Orders

    BOX Book for Option A is:

Order to buy 10 at $1.00
Order to buy 5 at $0.99
Order to sell 10 at $1.05
Order to sell 20 at $1.06

    BOX Book for Option B is:

Order to buy 15 at $1.00
Order to buy 5 at $0.98
Order to sell 50 at $1.05

    BOX Book for Option C is:

Order to buy 10 at $1.00
Order to buy 12 at $0.99
Order to sell 50 at $1.05

    Complex Order Book for Strategy A+B+C:

Complex Order to buy 20 at $3.00

    An order to sell 10 A+B+C at $3.00 is received.
    Prior to execution of this order against the order to buy A+B+C at
$3.00 on the Complex Order Book, BOX will determine whether it is
possible to execute the inbound Complex Order to sell against interest
on the BOX Book at a price equal to or better than the best bid on the
Complex Order Book. Since this is the case, the sell order will execute
against the bids on A, B and C at $1.00 each for 10 contracts each. As
this execution will exhaust the inbound sell order, the Complex Order
to buy 20 at $3.00 receives no trade allocation.
    The remaining order books are then as follows:
    BOX Book for Option A is:

Order to buy 5 at $0.99
Order to sell 10 at $1.05
Order to sell 20 at $1.06

    BOX Book for Option B is:

Order to buy 5 at $1.00
Order to buy 5 at $0.98
Order to sell 50 at $1.05

    BOX Book for Option C is:

Order to buy 12 at $0.99
Order to sell 50 at $1.05

    Complex Order Book for Strategy A+B+C:

Complex Order to buy 20 at $3.00

Example 2: Priority of Interest on the BOX Book Over Complex Orders

    Beginning with the initial scenario in Example 1, an order to sell
30 (rather than 10 in Example 1) A+B+C at $3.00 is received.
    For purposes of this example, assume that BOX is at NBBO on A, B
and C and that the NBBO bid for each of A, B and C after these trades
is equal to BBO.
    The first 10 contracts execute against the BOX Book as in Example 1
above but an order to sell 20 A+B+C at $3.00 remains.
    The cBBO for 5 A+B+C is then $2.98 (A: $0.99 + B: $1.00 + C: $0.99)
while the best bid on the Complex Order Book is for 20 at $3.00. Since
the Complex Order is at a price equal to cNBBO and better than the new
cBBO, the remaining 20 to sell at $3.00 will match with the Complex
Order bid. The resulting prices for each of the Legs will respect the
requirement of ``at least one Leg price better than BBO'' \16\ since
each Leg will execute at $1.00.
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    \16\ See proposed Rule 7240(b)(2)(i).
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    The remaining order books are then as follows:
    BOX Book for Option A is:

Order to buy 5 at $0.99
Order to sell 10 at $1.05
Order to sell 20 at $1.06

    BOX Book for Option B is:

Order to buy 5 at $1.00
Order to buy 5 at $0.98
Order to sell 50 at $1.05

    BOX Book for Option C is:

Order to buy 12 at $0.99
Order to sell 50 at $1.05

    Complex Order Book for Strategy A+B+C:

None
(2) Complex Order Filter Against NBBO
    All inbound Complex Orders to BOX will be filtered to ensure that
each Leg of a Complex Order will be executed at a price that is equal
to or better than the NBBO and the BOX BBO for each of the component
Legs.\17\
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    \17\ See proposed Rule 7240(b)(3)(iii).
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    If an inbound Complex Order is executable (against either opposite
side Complex Orders on the Complex Order Book or interest on the BOX
Book) on BOX, BOX will determine if the potential execution price is
equal to or better than both cNBBO and cBBO. If so, the inbound Complex
Orders will be automatically executed against bids and offers on the
Complex Order Book in price/time priority; provided, however, that
Complex Orders will execute against other Complex Orders only after
interest at the same net price on the BOX Book for the individual Legs
have been executed.\18\
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    \18\ See proposed Rule 7240(b)(3)(iii)(A).
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    If an inbound Complex Order is executable (against either opposite
side Complex Orders on the Complex Order Book or interest on the BOX
Book) on BOX at a price that is not equal to or better than both cNBBO
and cBBO, the incoming Complex Order will be exposed on the Complex
Order Book for a period of up to one second at a price that is equal to
cNBB \19\ (in the case of a sell order) or cNBO \20\ (in the case of a
buy order). Any executable, opposite side orders received during the
exposure period, including interest on the BOX Book, will immediately
execute against the exposed Complex Order. Any unexecuted quantity of
the Complex Order remaining at the end of the exposure period will be
cancelled.\21\
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    \19\ ``cNBB'' is defined as ``the best net bid price for a
Complex Order Strategy based on the NBBO for the individual options
components of such Strategy.'' See proposed Rule 7240(a)(2).
    \20\ ``cNBO'' is defined as ``the best net offer price for a
Complex Order Strategy based on the NBBO for the individual options
components of such Strategy.'' See proposed Rule 7240(a)(4).
    \21\ See proposed Rule 7240(b)(3)(iii)(B).

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    If an inbound Complex Order is not executable on BOX but is
executable against cNBBO, Complex Limit Orders will be entered on the
BOX Complex Order Book and BOX-Top Complex Orders and Market Complex
Orders will be exposed on the BOX Complex Order Book at cNBB (in the
case of a sell order) or cNBO (in the case of a buy order) for a period
of up to one second; any executable, opposite side orders received
during the exposure period, including interest on the BOX Book, will
immediately execute against the exposed Complex Order and any
unexecuted quantity remaining at the end of the exposure period will be
cancelled.\22\
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    \22\ See proposed Rule 7240(b)(3)(iii)(C).
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    If an inbound Complex Order is not executable on BOX and is not
executable against cNBBO, it will be entered on the BOX Complex Order
Book.\23\
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    \23\ See proposed Rule 7240(b)(3)(iii)(D).
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Example 3: Filtering of Complex Orders Against NBBO

    Begin with the initial scenario in Example 1. However, in Examples
1 and 2, it was assumed that each of the orders on a Leg were equal to
NBBO for the related options series. For this example, suppose instead
that the NBBO for Option B is $1.01 and $1.05 (better than BBO) and
that Options A and C on the BOX Book are equal to NBBO. Accordingly,
cNBBO for A+B+C would be $3.01-$3.15.
    An order to sell 30 A+B+C at $3.00 is received.
    In this case, the inbound order to sell 30 A+B+C at $3.00 would not
be able to execute against either the BOX Book or the resting Complex
Order bid because of the Complex Order filter.\24\ Instead, the inbound
sell order would be exposed on the Complex Order Book at $3.01; any
unexecuted quantity after the exposure would be cancelled.
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    \24\ See proposed Rule 7240(b)(3)(iii).
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(3) Implied Order Calculation, Broadcast and Priority
    Proposed Rule 7240(d)(1) defines an Implied Order to mean ``a
Complex Order at the cNBBO, derived from the orders at the BBO on the
BOX Book for each component Leg of a Strategy, provided each component
Leg is at a price equal to NBBO for that series.'' In other words, an
Implied Order for a Strategy is calculated and broadcast if each of the
prices of the component Legs is equal to NBBO. Implied Orders are
executed in the same manner as regular Complex Orders, including with
respect to priority of the BOX Book.\25\ At the same price on the BOX
Complex Order Book, an Implied Order has priority over a resting
Complex Order.\26\ An Implied Order is broadcast to Participants as an
order on the Complex Order Book. Implied Orders are only generated and
broadcast for Strategies with two Legs and with a ratio of one-to-
one.\27\ Also, an Implied Order is not generated if the subject series
order is going through NBBO exposure pursuant to Rule 7130(b), or using
orders in the PIP, Facilitation Auction, or Solicitation Auction.\28\
The quantity associated with the Implied Order is limited to the
smaller quantity of the two Legs comprising the Strategy to ensure a
one-to-one ratio is maintained. As shown in the example below, if there
exists an order to buy 10 contracts of Option A and an order to buy 15
contracts of Option B, BOX will only generate an Implied Order to buy
10 of Strategy A+B.
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    \25\ See proposed Rule 7240(d)(6)(i).
    \26\ See proposed Rule 7240(d)(6)(ii).
    \27\ See proposed Rule 7240(d)(3).
    \28\ See proposed Rule 7140(d)(4).
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    When an Implied Order is no longer at the cNBBO, the Implied Order
will be removed and a new Implied Order will be generated, provided
there is interest on the BOX Book to generate an Implied Order at the
new cNBBO.\29\ Implied Orders will be removed if either component order
on a Leg is executed in full, in part, or cancelled and, where
appropriate, recalculated.\30\
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    \29\ See proposed Rule 7240(d)(2).
    \30\ See proposed Rule 7240(d)(5).
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Example 4: Calculation and Execution of Implied Order

    BOX Book for Option A is:

Order to buy 10 at $1.00
Order to buy 5 at $0.99
Order to sell 10 at $1.05
Order to sell 20 at $1.06

    BOX Book for Option B is:

Order to buy 15 at $1.00
Order to sell 50 at $1.05

    Complex Order Book for Strategy A+B:

Complex Order to buy 20 at $2.00
Implied Order to buy 10 at $2.00
Implied Order to sell 10 at $2.10

    Assume the bids on A and B on BOX are equal to NBBO for each such
that cNBBO is $2.00.
    Suppose in this example that the Complex Order to buy 20 at $2.00
is received prior to the receipt of the order to buy 15 B at $1.00.
Thus, the Complex Order to buy 20 at $2.00 has time priority over the
Implied Order to buy 10 at $2.00.
    Subsequently, a Complex Order to sell 20 A+B is received, which
could trade with both the Implied Order to buy and the Complex Order to
buy. Because, at the same price on the Complex Order Book, an Implied
Order has priority over a resting Complex Order even if the Complex
Order was entered first,\31\ the first 10 contracts of the order to
sell Strategy A+B will be executed against orders on A and B,
respectively, on the BOX Book: 10 of A are sold at $1.00 and 10 of B
are sold at $1.00. After this execution, the order books would be as
follows:
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    \31\ See proposed Rule 7240(d)(6)(ii).
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    BOX Book for Option A is:

Order to buy 5 at $0.99
Order to sell 10 at $1.05
Order to sell 20 at $1.06

    BOX Book for Option B is:

Order to buy 5 at $1.00
Order to sell 50 at $1.05

    Complex Order Book for Strategy A+B:

Complex Order to buy 20 at $2.00
Implied Order to sell 10 at $2.10

    The remaining 10 of the Complex Order to sell Strategy A+B at $2.00
will be executed against the resting Complex Order to buy A+B at $2.00
($1.00 for each component Leg). Note that no Implied Order for 5 A+B at
$1.99 is generated since this would be worse than cNBBO of $2.00.
(4) Price Improvement Requirement
    Except in the case of Complex Orders on Non-standard Strategies
which may execute at a price equal to cBBO after executions against the
BOX Book, the Exchange proposes to allow two Complex Orders to execute
against each other at a net price that is better than cBBO by one
cent.\32\ On some options exchanges that provide auctions for Complex
Orders, a Complex Order may execute against another Complex Order if
one leg of the Complex Order trades at a price that is at least one
cent better than customer orders in the same series.\33\ On one options
exchange that has no auction for Complex Orders, a Complex Order may
execute against another Complex Order if one leg of the Complex Order
trades at a price that is better than priority customer interest in
that series by at least one minimum trading increment.\34\
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    \32\ See proposed Rule 7240(b)(2)(i).
    \33\ See, e.g., Securities Exchange Act Release Nos. 57556
(March 26, 2008), 73 FR 18018 (April 2, 2008) (Order Approving CBOE-
2008-03) and 63558 (December 16, 2010) 75 FR 80553 (December 22,
2010) (Order Approving NYSEAmex-2010-100).
    \34\ See ISE Rule 722(b)(2).
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    Although BOX is not proposing to establish an auction for Complex
Orders

at this time, the Exchange believes that it is consistent with the
protection of investors and the public interest to permit Complex
Orders (other than Non-standard Strategies) to execute against each
other at a price that is better than cBBO by one cent, rather than the
minimum trading increment for one of the component series for the
following reasons.
    First, BOX will always execute Complex Orders first against
interest on the BOX Book to the extent the Complex Order can be
executed in full or in a permissible ratio by such interest.\35\
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    \35\ See proposed Rule 7240(b)(3)(i) and (ii).
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    Second, the Exchange believes that one cent is a significant and
material improvement to customers.\36\ While the Exchange is not
currently proposing a Complex Order auction, the Exchange believes its
proposal is appropriate in light of the price competition for Complex
Orders on BOX driven by other features in the proposal. For example,
the Exchange believes that the generation of Legging Orders will
provide enhanced price competition and greater integration of the BOX
Book and Complex Order Book. Also, the Exchange notes that each leg of
a Complex Order must be executed at a price equal to NBBO. The Exchange
believes these benefits will enhance the efficiency of the BOX Book and
the Complex Order Book, and therefore, is consistent with the
protection of investors and the public interest.\37\
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    \36\ Various options mechanisms such as the BOX PIP and the NOM
price improving order have been implemented because it is recognized
that one cent is a significant and material improvement to
customers. See Securities Exchange Act Release Nos. 49068 (January
13, 2004), 69 FR 2775, 2799 (January 20, 2004) (SR-BSE-2002-15)
(Order Approving BOX Facility), and 57478 (March 12, 2008), 73 FR
14521 (March 18, 2008) (SR-NASDAQ-2007-004) (Order Approving NASDAQ
Options Market).
    \37\ The Chicago Board Options Exchange, Inc. permits trading
Complex Orders in one cent minimum increments, providing additional
price points at which Complex Orders could be executed. See
Securities Exchange Act Release Nos. 57556 (March 26, 2008), 73 FR
18018 (April 2, 2008) (Order Approving CBOE-2008-03)
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    Third, the Exchange believes that permitting price improvement by
one cent rather than by the minimum trading increment could permit more
active Complex Order trading by allowing execution where participants
may not otherwise be willing to offer better prices in larger
increments.
    Fourth, since the implementation of the Penny Pilot Program, many
of the options instruments involved in Complex Order trading now
already have a minimum increment of one cent.\38\ As a result, even
though the initial implementation of complex order trading rules on
other exchanges largely pre-dates the Penny Pilot Program, the effect
of the Exchange's proposal is already implemented in a significant
portion of Complex Order trading on other options exchanges.
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    \38\ The Penny Pilot Program has been in effect since January
26, 2007. See Securities Exchange Act Release No. 55155 (Jan. 23,
2007), 72 FR 4741 (Feb. 1, 2007) (SR-BSE-2006-49). At the beginning
of 2013, more than 350 classes of options are included in the Penny
Pilot Program. See BOX Regulatory Circular 2012-30, available online
at http://boxexchange.com/f_circulars/_RC-2012-30_Penny_Pilot_Classes_Listed_on_BOX.pdf
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    In the case of Non-standard Strategies, the execution of two
Complex Orders against each other could occur at prices where the
condition that ``at least one Leg of the Complex Order must trade at a
price that is better than the corresponding bid or offer in the
marketplace'' is not met. A Complex Order for a Non-standard Strategy
will execute against the bids and offers on the BOX Book for the
individual Legs of the Strategy for all of the quantity available at
the best price in a permissible ratio until the quantities remaining on
the BOX Book are insufficient to execute against the Complex Order.
Following such execution, a Complex Order may execute against other
Complex Orders, and the component Legs of the Complex Order may trade
at prices equal to the corresponding prices on the BOX Book.\39\ In
other words, the fact that interest on the BOX Book for a Non-standard
Strategy is not sufficient to execute an opposite side Complex Order in
its entirety does not mean there is no interaction or a loss of
priority. Interest on the BOX Book will execute against a Complex Order
for a Non-standard Strategy to the extent possible, after which the
Complex Order may be executed against another Complex Order at a price
equal to, but not worse than, the corresponding price on the BOX Book.
---------------------------------------------------------------------------

    \39\ See proposed Rule 7240(b)(2)(ii).
---------------------------------------------------------------------------

    This treatment of Non-standard Strategies promotes just and
equitable principles of trade, removes impediments to and perfects the
mechanism of a free and open market and national market system and
otherwise is consistent with the requirements of Section 6(b)(5) of the
Act \40\ because the alternatives to this proposal would be either to
create a locked market on the Complex Order Book or to reject an
incoming Complex Order that is readily executable against a resting
Complex Order. The Exchange does not believe that either of these
alternatives is consistent with the requirements of Section 6(b)(5)
\41\ of the Act because the two Complex Orders would miss an
opportunity for execution, but the orders on the BOX Book gain no
benefit because these orders cannot interact with the incoming Complex
Order either. The Exchange believes, therefore, that its proposal is
the best solution to the dilemma. Furthermore, the Exchange believes
this procedure is consistent with the intent of the principle that a
Complex Order execute ``at least one Leg better than BBO for each
options instrument'' as this principle assumes there is sufficient
quantity to respect the ratio of a Complex Order when prices are
otherwise in line. In other words, orders are executable only against
one another where both match at a price and a quantity. Therefore, the
Exchange believes its proposal is consistent with the rationale for
otherwise having one Leg price better than BBO since it will give
priority to interest on the BOX Book over Complex Orders where the
quantity on the BOX Book is sufficient to respect the ratio of the
executable Complex Order for a Non-standard Strategy.
---------------------------------------------------------------------------

    \40\ 15 U.S.C. 78f(b)(5).
    \41\ 15 U.S.C. 78f(b)(5).
---------------------------------------------------------------------------

Example 5: Execution of Leg Orders on Non-Standard Strategy

    Assume a Non-standard Strategy consisting of the simultaneous
purchase of one Option A instrument and two Option B instruments
(A+2B).
    The order books are initially as follows:

    BOX Book for Option A is:

Order to buy 2 at $1.00
Order to buy 5 at $0.99
Order to sell 20 at $1.06
Order to sell 2 at $1.10

    BOX Book for Option B is:

Order to buy 3 at $1.00
Order to sell 3 at $1.10

    Complex Order Book for Strategy A+2B:

Complex Order to buy 2 at $3.00
Complex Order to buy 5 at $2.90
Complex Order to sell 10 at $3.20

    Since A+2B is a Non-standard Strategy (a one-for-two ratio), no
Implied Order for A+2B is broadcast. The cBBO is $3.00 bid, $3.26
offered.
    In this example, a Complex Order is received to sell 2 A+2B at
$3.00. This order can match with the existing bid for three Strategies
at $3.00 on A+2B.
    However, as the Exchange proposes to give priority to interest on
the BOX Book over executable Complex Orders even where no Implied Order
is being broadcast for the Strategy, 1 of the 2

contracts to sell A+2B at $3.00 will execute against the orders on the
respective Legs (selling 1 A and 2 B at $1.00 each ($1.00 + 2($1.00) =
$3.00)). After this initial execution against the BOX Book, the order
books are as follows:
    BOX Book for Option A is:

Order to buy 1 at $1.00
Order to buy 5 at $0.99
Order to sell 20 at $1.06
Order to sell 2 at $1.10

    BOX Book for Option B is:

Order to buy 1 at $1.00
Order to sell 3 at $1.10

    Complex Order Book for Strategy A+2B:

Complex Order to buy 2 at $3.00
Complex Order to buy 5 at $2.90
Complex Order to sell 10 at $3.20

    One Complex Order to sell A+2B at $3.00 remains.
    Because insufficient quantity remains on the bid of B at $1.00 to
combine with the bid on A to respect the Complex Order ratio, the
remaining order to sell 1 A+2B at $3.00 will be executed against the
resting Complex Order to buy at $3.00. In this case, the proposed rules
for trading Complex Orders on BOX may result in the match of two
Complex Orders without at least one Leg having a price better than the
best prices on the BOX Book.\42\
---------------------------------------------------------------------------

    \42\ See proposed Rule 7240(b)(2)(ii).
---------------------------------------------------------------------------

(5) Valid Order Types for Complex Orders
    Proposed Rule 7240(b)(4)(i) provides that Complex Orders may be
entered as Fill-and-Kill orders, Limit Orders, BOX-Top Orders, Market
Orders, or Session Orders, each as defined in existing Rule 7110. The
Exchange proposes to delete the provision in existing Rule 7240(b)(4)
that provides that Complex Orders may be entered as all-or-none orders
because BOX does not have such orders. BOX currently permits Fill-and-
Kill Orders which are immediately executed against any existing orders
at the specified price or better, up to the volume of the Fill-and-Kill
Order. Any residual volume left is cancelled.\43\ The Exchange proposes
Rule 7240(b)(4)(i) to add Limit Orders, BOX-Top Orders, Market Orders
and Session Orders as order types permitted for Complex Orders. Each of
these order types are currently permitted on BOX for single option
series and are defined in existing Rule 7110.
---------------------------------------------------------------------------

    \43\ See existing Rule 7110(e)(1)(ii).
---------------------------------------------------------------------------

    The Exchange proposes Rule 7240(b)(4)(ii) to specify that BOX-Top
Complex Orders are executed at the best price available in the market
for the total quantity available from any contra bid (offer). Any
residual volume left after part of a BOX-Top Complex Order has been
executed is automatically converted to a limit order on the Complex
Order Book at the net Strategy price at which the original BOX-Top
Complex Order was executed. See the additional discussion in Section
3(c) and Example 11 below for details on the handling of BOX-Top Orders
which partially execute against a Legging Order on a non-penny series.
c. Legging Order Execution and Priority
    The Exchange proposes Rule 7240(c) to permit the implementation of
Legging Orders. Proposed Rule 7240(c)(1) defines a Legging Order as ``a
Limit Order on the BOX Book that represents one side of a Complex Order
that is to buy or sell an equal quantity of two options series resting
on the BOX Complex Order Book.'' A Legging Order is a firm order that
is included in the BBO if it is equal to, or better than, the existing
BBO.
    The Exchange proposes that Legging Orders will only be generated
for Complex Orders with two Legs and with a ratio of one-to-one.\44\ As
a result, no Legging Orders will be generated for Complex Orders with
more than two Legs or with a ratio other than one-to-one. Legging
Orders will be automatically generated on behalf of a Complex Order so
that they are represented on the BOX Book.\45\ Unlike Implied Orders, a
Legging Order will not necessarily be equal to or better than NBBO;
however, the usual Exchange rules regarding filtering against NBBO \46\
will continue to apply to the BOX Book to ensure no Legging Order will
be executed at a price outside NBBO.
---------------------------------------------------------------------------

    \44\ See proposed Rule 7240(c)(1).
    \45\ See proposed Rule 7240(b)(3)(ii).
    \46\ See existing Rule 7130(b).
---------------------------------------------------------------------------

    A Legging Order may be automatically generated for one Leg of a
Complex Order at a price at which the net price can be achieved when
the other Leg is executed against the best displayed bid or offer on
the BOX Book at a price equal to or better than NBBO.\47\ In other
words, a Legging Order to buy Option A, derived from a Complex Order to
buy A+B, will only be generated if the outright best offer on BOX for
Option B is equal to or better than NBBO.\48\ This does not necessarily
mean that the Legging Order bid on Option A will be equal to the best
bid on Option A on the BOX Book, nor that it will be equal to or better
than NBBO for Option A. However, due to the NBBO filtering rules
already in place for interest on the BOX Book,\49\ the Legging Order on
Option A will only be eligible for execution if it is equal to NBBO and
at a better price than any outright bid on Option A on the BOX Book.
---------------------------------------------------------------------------

    \47\ See proposed Rule 7240(c)(2). The proposed Legging Order
rules are based on ISE
    Rules 715(k) and 722(b)(3)(ii). A market participant on the
NASDAQ Options Market (``NOM'') may enter Price Improving Orders on
NOM that would potentially execute at a one cent increment within
the NBBO. See NOM Approval Order, SEC Release No. 34-57478 (March
12, 2008) 73 FR 14521 at 14528-14530 (March 18, 2008).
    \48\ See proposed Rule 7240(c)(2).
    \49\ See existing Rule 7130(b).
---------------------------------------------------------------------------

    Similar to price improving orders on the NASDAQ Options Market
(``NOM''), the Exchange believes that automatically generating Legging
Orders, which will not be executed until after all other executable
interest on the BOX Book at the same price is executed in full, will
provide additional execution opportunities for Complex Orders without
negatively impacting any investors in the regular market.\50\ In fact,
the generation of Legging Orders may enhance execution quality for
investors in the regular market by improving the price and/or size of
the BBO and by providing additional execution opportunity for resting
orders on the BOX Book.
---------------------------------------------------------------------------

    \50\ See NOM Approval Order, SEC Release No. 34-57478 (March 12,
2008) 73 FR 14521 at
    14529-14530 (March 18, 2008).
---------------------------------------------------------------------------

(1) Calculation and Display of Legging Orders
    A Legging Order may be priced and ranked on the BOX Book at a price
other than its generated price to buy (sell) and may be displayed at a
different price in the following two cases.
    First, where the Legging Order price does not respect the price
increment of the option series, for display purposes, it will be
rounded down (in the case of a buy order) or up (in the case of a sell
order) to the nearest valid trading increment. Legging Orders will be
automatically generated at prices in one cent increments but, for
series trading in nickels or larger increments, will be displayed at
the nearest minimum trading increment.
    Legging Orders to buy (sell) in an options series with a minimum
trading increment greater than one cent are displayed at the
appropriate minimum trading increment permitted for the series below
(above) the price of the automatically generated Legging Order,
(rounding down to the proper increment for buy orders and up to the
proper increment for sell orders). While a Legging Order will be
displayed at the rounded price in the case of non-penny series, any
execution of the Legging Order will occur at the price at which

it is generated and will be in a one cent increment.\51\
---------------------------------------------------------------------------

    \51\ See proposed Rule 7240(c)(2).
---------------------------------------------------------------------------

    Second, where the generated price of a Legging Order locks or
crosses the best bid or offer of another exchange it will be ranked at
the opposite side NBBO price and displayed on the BOX Book at a price
rounded down (up) in the case of a buy (sell) Legging Order to the
nearest trading increment for the options instrument. The displayed
price of the Legging Order will be adjusted for subsequent changes to
the opposite side NBBO in accordance with these principles if the
adjustment will result in an improvement to the previously displayed
price. If an incoming order is executable against such Legging Order,
it will be executed at the NBBO.\52\
---------------------------------------------------------------------------

    \52\ See proposed Rule 7240(c)(2).
---------------------------------------------------------------------------

Example 6: Display and Execution of Legging Order That Locks/Crosses
NBBO

    Assume the following for Option A:
    NBBO for Option A is:

NBBO Bid is $1.03
NBBO Offer is $1.04

    BOX Book for Option A is:

Order to buy 10 at $1.03
Order to sell 10 at $1.05

    First Event:
    A Complex Order to buy 10 A+B is received. The best BOX offer on
Option B generates a Legging Order to buy 10 A at $1.04. Since this
would lock the opposite side NBBO, it is displayed on the BOX Book as
an order to buy at $1.03. The BOX Book for Option A then is as follows:
    BOX Book for Option A is:

Legging Order to buy 10 at $1.03
Order to buy 10 at $1.03
Order to sell 10 at $1.05

    Second Event:
    Following the First Event, an order to sell 5 A at $1.03 is
received. This executes against the Legging Order at $1.04. Even though
the Legging Order and the outright order to buy Option A were displayed
at the same price, the Legging Order trades first because the price at
which it can trade (opposite side NBBO of $1.04) gives it price
priority.
    The NBBO and BOX Book for Option A then are as follows:
    NBBO for Option A is:

NBBO Bid is $1.03
NBBO Offer is $1.04

    BOX Book for Option A is:
Legging Order to buy 5 at $1.03
    Order to buy 10 at $1.03
Order to sell 10 at $1.05

    Third Event:
    Following the Second Event, the NBBO offer subsequently changes to
$1.05 and the remaining 5 contracts of Option A on the Legging Order
will be displayed at $1.04. The NBBO and BOX Book for Option A are then
as follows:
    NBBO for Option A is:

NBBO Bid is $1.04
NBBO Offer is $1.05

    BOX Book for Option A is:

Legging Order to buy 5 at $1.04
Order to sell 10 at $1.05
Order to buy 10 at $1.03

    Where an options instrument is part of two or more distinct
strategies, multiple Legging Orders may be generated. In this case, the
principles above regarding display and ranking prices in the case of
locked or crossed opposite side NBBO will be observed. The example
below illustrates how trade allocations will be performed in the case
where several Legging Orders are displayed and ranked at the same
price.

Example 7: Display and Execution of Legging Orders From Multiple
Complex Orders

    Assume the following for Option A:
    NBBO for Option A is:

NBBO Bid is $1.03
NBBO Offer is $1.04

    BOX Book for Option A is:

Order to buy 10 at $1.03
Order to sell 10 at $1.07

    First Event:
    A Complex Order to buy 10 A+B is received. The best BOX offer on
Option B generates a Legging Order (``Order 1'') to buy 10 A at $1.04.
Order 1 is ranked on the BOX Book at $1.04 and displayed on the BOX
Book as an order to buy at $1.03.
    Next, a Complex Order to buy 10 A+C is received. The best BOX offer
on Option C generates a Legging Order (``Order 2'') to buy 10 A at
$1.05. Order 2 is ranked on the BOX Book at $1.04 and displayed on the
BOX Book as an order to buy at $1.03.
    Next, a Complex Order to buy 10 A+D is received. The best BOX offer
on Option D generates a Legging Order (``Order 3'') to buy 10 A at
$1.06. Order 3 is ranked on the BOX Book at $1.04 and displayed on the
BOX Book as an order to buy at $1.03. After the foregoing three Complex
Orders have been entered, and the resulting Legging Orders generated,
the BOX Book for Option A then is as follows:
    BOX Book for Option A is:

Legging Order to buy 10 at $1.04 (Order 1, displayed at $1.03)
Legging Order to buy 10 at $1.04 (Order 2, displayed at $1.03)
Legging Order to buy 10 at $1.04 (Order 3, displayed at $1.03)
Order to buy 10 at $1.03
Order to sell 10 at $1.07

    Second Event:
    Following the First Event, the NBBO Offer for Option A changes from
$1.04 to $1.05.
    The NBBO and BOX Book for Option A, in order of priority, then are
as follows:
    NBBO for Option A is:

NBBO Bid is $1.03
NBBO Offer is $1.05

    BOX Book for Option A is:

Legging Order to buy 10 at $1.05 (Order 2, displayed at $1.04)
Legging Order to buy 10 at $1.05 (Order 3, displayed at $1.04)
Legging Order to buy 10 at $1.04 (Order 1, displayed at $1.04)
Order to buy 10 at $1.03
Order to sell 10 at $1.07

    Third Event:
    Following the Second Event, the NBBO Offer for Option A changes
from $1.05 to $1.06.
    The NBBO and BOX Book for Option A, in order of priority, then are
as follows:
    NBBO for Option A is:

NBBO Bid is $1.03
NBBO Offer is $1.06

    BOX Book for Option A is:

Legging Order to buy 10 at $1.06 (Order 3, displayed at $1.05)
Legging Order to buy 10 at $1.05 (Order 2, displayed at $1.05)
Legging Order to buy 10 at $1.04 (Order 1, displayed at $1.04)
Order to buy 10 at $1.03
Order to sell 10 at $1.07

    Fourth Event:
    Following the Third Event, an order to buy 10 A at $1.05 is
received.
    The NBBO and BOX Book for Option A, in order of priority, then are
as follows:
    NBBO for Option A is:

NBBO Bid is $1.03
NBBO Offer is $1.06

    BOX Book for Option A is:

Legging Order to buy 10 at $1.06 (Order 3, displayed at $1.05)
Order to buy 10 at $1.05
Legging Order to buy 10 at $1.05 (Order 2, displayed at $1.05)
Legging Order to buy 10 at $1.04 (Order 1, displayed at $1.04)
Order to buy 10 at $1.03
Order to sell 10 at $1.07
(2) Priority of Legging Orders
    A Legging Order may execute against an incoming order only after
all other executable orders and quotes at the

same price are executed in full.\53\ Legging Orders will only be
eligible for execution after being filtered against NBBO pursuant to
existing Rule 7130(b).\54\ When a Legging Order is executed, the other
component Leg of the Complex Order will be automatically executed
against the displayed BBO.\55\
---------------------------------------------------------------------------

    \53\ See proposed Rule 7240(c)(3).
    \54\ See proposed Rule 7240(c)(3).
    \55\ See proposed Rule 7240(c)(3).
---------------------------------------------------------------------------

    The following example illustrates the interaction of orders on the
BOX Book, Complex Orders and Legging Orders.

Example 8: Legging Order Execution

    BOX Book for Option A is:

Order to buy 10 at $1.00
Order to buy 5 at $0.99
Order to sell 20 at $1.20
Order to sell 20 at $1.25

    BOX Book for Option B is:

Order to buy 10 at $1.00
Order to sell 20 at $1.20
    Complex Order Book for Strategy A+B:
Complex Order to buy 10 at $2.25
Implied Order to buy 10 at $2.00
Implied Order to sell 20 at $2.40

    Legging Orders to buy 10 A at $1.05 (resulting from the Complex
Order to buy 10 A+B at $2.25 minus the order to sell 20 B at $1.20) and
10 B at $1.05 (resulting from the Complex Order to buy 10 A+B at $2.25
minus the order to sell 20 A at $1.20) may be automatically generated,
improving the BOX best bid for each of Leg A and Leg B, respectively,
to $1.05.
    The resulting order books are as follows:
    BOX Book for Option A is:

Legging Order to buy 10 at $1.05
Order to buy 10 at $1.00
Order to buy 5 at $0.99
Order to sell 20 at $1.20
Order to sell 20 at $1.25

    BOX Book for Option B is:

Legging Order to buy 10 at $1.05
Order to buy 10 at $1.00
Order to sell 20 at $1.20

    Complex Order Book for Strategy A+B:

Complex Order to buy 10 at $2.25
Implied Order to buy 10 at $2.00
Implied Order to sell 20 at $2.40

    Subsequently, an outright order to sell 10 of A is received. This
order will execute against the Legging Order to buy A at $1.05 and
there will be an automatic execution of the other Leg of the Complex
Order against the displayed offer for B at $1.20. As a result, the net
price of $2.25 is achieved for the Complex Order (buy A at $1.05 + buy
B at $1.20 = $2.25 net). Since the Complex Order to buy 10 at $2.25 has
been filled, the Legging Order to buy B at $1.05 will be automatically
cancelled.
    In addition to enabling the execution of the Complex Order at a net
price of $2.25, which otherwise would not have been possible, the
Legging Order also enhanced execution for outright orders on the BOX
Book because (i) the incoming outright order to sell A received a
better price ($1.05 instead of $1.00); and (ii) additional liquidity to
execute resting interest to sell 10 of B at $1.20 was provided by the
Complex Order.

Example 9: Priority of Legging Orders at Same Price

    BOX Book for Option A is:

Legging Order to buy 10 at $1.00
Order to buy 10 at $1.00
Order to buy 5 at $0.99
Order to sell 20 at $1.20
Order to sell 20 at $1.25

    BOX Book for Option B is:

Legging Order to buy 10 at $1.00
Order to buy 10 at $1.00
Order to sell 20 at $1.20

    Complex Order Book for Strategy A+B:

Complex Order to buy 10 at $2.20
Implied Order to buy 10 at $2.00
Implied Order to sell 20 at $2.40

    The Complex Order to buy A+B at $2.20 results in Legging Orders on
each of Option A and Option B equal to the best outright orders on the
BOX Book for each Leg at $1.00.
    Assume the Complex Order to buy 10 A+B at $2.20 was received prior
to the receipt of the outright order to buy 10 A at $1.00. Thus, the
Legging Order at $1.00 would have ``time priority'' over the outright
order to buy A at $1.00.
    Subsequently, an order to sell 15 A at $1.00 is received. Since
interest on the BOX Book have priority over Legging Orders at the same
price,\56\ 10 contracts on Option A are executed against the order to
buy 10 A at $1.00. The remaining 5 contracts to sell Option A are then
executed, together with a matching 5 contracts of Option B purchased at
$1.20, against the Complex Order.
---------------------------------------------------------------------------

    \56\ See proposed Rule 7240(c)(3).
---------------------------------------------------------------------------

    The order books then are as follows:
    BOX Book for Option A is:

Legging Order to buy 5 at $1.00
Order to buy 5 at $0.99
Order to sell 20 at $1.20
Order to sell 20 at $1.25

    BOX Book for Option B is:

Legging Order to buy 5 at $1.00
Order to buy 10 at $1.00
Order to sell 15 at $1.20

    Complex Order Book for Strategy A+B:

Complex Order to buy 5 at $2.20
Implied Order to buy 5 at $1.99
Implied Order to sell 15 at $2.40

    A Legging Order may be generated when at least one Complex Order
and at least one order on the other component Leg of such Complex
Order(s) are received. Where there are multiple Complex Orders on the
same Strategy at the same price, which is also the best price on the
Complex Order Book, generated Legging Orders will be aggregated such
that only one Legging Order will exist, relating to that Strategy, with
respect to any single option series at any time on the BOX Book.
Partial executions against a Legging Order that is generated from
multiple Complex Orders will be allocated among such Complex Orders and
the related orders on the component Leg based on time priority of such
Complex Orders and orders on the BOX Book,\57\ regardless of when the
Legging Order is generated.
---------------------------------------------------------------------------

    \57\ See proposed Rule 7240(c)(3).
---------------------------------------------------------------------------

    The following Example 10 illustrates the allocation of orders when
a Legging Order is generated from multiple Complex Orders.

Example 10: Time Priority of Legging Orders

    Assume the following orders on A+B bids and B offers (orders below
are shown in descending time priority with the earliest orders at the
top):
    Bids on A+B:

10 at $2.00 (order x)
7 at $2.00 (order y)
12 at $2.00 (order z)
Total: 29 Bids on A+B

    Offers on B:

5 at $1.00 (order a)
8 at $1.00 (order b)
10 at $1.00 (order c)
23 Offers on B

    The above results in the generation of a Legging Order to buy 23 A
at $1.00 since sufficient bids on A+B exist to accommodate all 23
existing offers on B.
    Assume no outright order to buy A at $1.00 exists and that,
subsequently, an order to sell 20 A at $1.00 (order m) is received. BOX
will allocate trades on A+B and B according to the time priority of
each until the first 20 orders have been filled. The resulting trade
executions are as follows (all trades at $1.00):

----------------------------------------------------------------------------------------------------------------
                                                  Option A                                Option B
               Qty                ------------------------------------------------------------------------------
                                          Buyer              Seller               Buyer              Seller
----------------------------------------------------------------------------------------------------------------
5................................  order x             order m             order x             order a
5................................  order x             order m             order x             order b
3................................  order y             order m             order y             order b
4................................  order y             order m             order y             order c
3................................  order z             order m             order z             order c
                                  ------------------------------------------------------------------------------
    Total........................          20 Option A executions
                                           20 Option B executions
----------------------------------------------------------------------------------------------------------------

The allocation of orders to buy A+B is determined by time priority
because all are at the same price ($2.00). Similarly, the allocation of
orders to sell B is determined by time priority because all are at the
same price ($1.00). In this Example 8, note that each buyer of Option A
is also buying an equal number of Option B because such buyer is
actually buying A+B.
(3) Other Rules for Legging Orders
    A Legging Order is automatically removed from the BOX Book if: (i)
Execution of the Legging Order would no longer achieve the net price of
the Complex Order when the other component Leg is executed against the
best displayed bid or offer on the BOX Book, (ii) the other component
Leg of the Complex Order cannot be executed at a price equal to the
NBBO, (iii) the Complex Order is executed in full or in part, or (iv)
the Complex Order is cancelled or modified.\58\
---------------------------------------------------------------------------

    \58\ See proposed Rule 7240(c)(4).
---------------------------------------------------------------------------

    The Exchange proposes to amend Rule 7110(c)(2) regarding BOX-Top
Orders to account for a unique result that occurs when a BOX-Top Order
executes with a Legging Order at a one cent increment in a series
traded in a larger increment. Under existing Exchange rules, BOX-Top
Orders entered into the BOX Book are executed at the best price
available in the market for the total quantity available from any
contra bid (offer), and any residual volume is automatically converted
to a limit order at the price at which the BOX-Top Order was
executed.\59\ When a BOX-Top Order executes against a Legging Order at
a one cent increment in a series traded in a larger increment, the
Exchange proposes that any remaining BOX-Top Order quantity will be
priced, ranked and displayed on the BOX Book at the nearest increment
tick permitted for the series (rounding down to the proper increment
for buy orders and up to the proper increment for sell orders).\60\
---------------------------------------------------------------------------

    \59\ The Exchange notes for comparison that Market Orders are
executed at the best price obtainable for the total quantity
available when the order reaches the BOX market and any remaining
quantity is executed at the next best price available for the total
quantity available. This process continues until the Market Order is
fully executed. Use of a BOX-Top Order maintains the initial
execution price as a limit on the execution of the remainder of an
order. See existing Rule 7110(c)(2).
    \60\ See proposed Rule 7110(c)(2).
---------------------------------------------------------------------------

Example 11: Partial Execution of BOX-Top Order on Non-Penny Series
Instrument With Legging Order

    Assume Option A is a non-penny series with a trading increment at
five cent intervals. The BOX Book for Option A is as follows:
    BOX Book for Option A is:

Legging Order to buy 10 at $5.02 (Legging Order displayed at $5.00)
Order to buy 10 at $5.00
Order to sell 15 at $5.10
Order to sell 10 at $5.15

    A BOX-Top Order to sell 15 A is received. The order will execute
for 10 contracts of A against the Legging Order at $5.02. The remaining
quantity will be booked as a sell order for 5 at $5.05. The resulting
BOX Book for Option A would then be:
    BOX Book for Option A is:

Order to buy 10 at $5.00
Order to sell 5 at $5.05 (ex BOX-Top Order)
Order to sell 15 at $5.10
Order to sell 10 at $5.15

    The unexecuted quantity of a BOX-Top Order that executes against a
Legging Order on a non-penny series at the Legging Order's generated
(not displayed) price will be rounded up (down) for sell (buy) orders
to the nearest valid price increment. The unexecuted portion of a BOX-
Top Order will be booked at the same price as its displayed price.
(4) Proposed Amendments to PIP on Legging Orders
    At the conclusion of a PIP, any Legging Order with a price eligible
for execution against the PIP Order will cede priority to all quotes
and orders, including the Primary Improvement Order and any other
Improvement Orders at the same price. In other words, a Legging Order
may execute against a PIP Order at the end of a PIP once all other
interest at the same price has been fully executed.\61\ The exception
would be that a Legging Order on the same side and at the same price as
the Primary Improvement Order at the end of a PIP may receive trade
allocation if the Primary Improvement Order has included a ``surrender
quantity'' as set forth in existing Rule 7150(g)(6). Note that in the
case of a surrender quantity submitted by the Primary Improvement
Order, such a Legging Order will trade with the PIP Order only after
all other interest (e.g., Unrelated Orders \62\ and Improvement Orders)
at the same price has been filled. In other words, such Legging Order
will only receive a trade allocation after all other interest at same
price at the end of a PIP has been filled.
---------------------------------------------------------------------------

    \61\ See proposed Rule 7150(f)(3).
    \62\ Rule 7150(a) defines Unrelated Order as a non-Improvement
Order entered in the BOX market during a PIP.
---------------------------------------------------------------------------

Example 12: ``Surrender Quantity'' at End of PIP With Legging Order at
Price Equal to Primary Improvement Order

    Assume at the end of a PIP to sell 30 contracts of A, the Order
Book is as follows:
    BOX Book for Option A is:

Improvement Order to buy 20 at $1.02
Legging Order to buy 10 at $1.02
Primary Improvement Order to buy 30 at $1.02
PIP Order to sell 30 at $1.02

    Absent a ``surrender quantity'' submitted with the Improvement
Order, the 30 contracts on Option A would be allocated as follows:
     18 (60%) to the Improvement Order.
     12 (40%) to the Primary Improvement Order.
     None to the Complex Order which generated the Legging
Order.
    Suppose instead that the Primary Improvement Order had included a
surrender quantity of 6 contracts (e.g., the Primary Improvement Order
wishes to only trade 24 contracts at end of PIP). In this case, the
trade allocation would be:
     20 to the Improvement Order.

     6 to the Primary Improvement Order.
     4 to the Complex Order which generated the Legging Order.
    The proposed amendments to Rules 7150(i) and 7150(j) provide that
Legging Orders on the BOX Book will be treated in the PIP in the same
manner as Unrelated Orders are currently. While a PIP is underway on a
Leg which is itself part of a Strategy, it is possible that a new order
on the Strategy or on the other component Leg (in the case of a
Strategy with two Legs and with a ratio of one-to-one) will cause a new
Legging Order to be generated for the Leg for which the PIP is in
progress. Legging Orders generated on the BOX Book during a PIP will
interact with orders in the PIP in the same manner as Unrelated Orders
are currently.\63\
---------------------------------------------------------------------------

    \63\ No amendments to existing Rules 7150(g) or (h) are
necessary. Proposed Rule 7150(f)(3) describes the execution of
orders at the end of the PIP, including Legging Orders. A Legging
Order is executed only after all other executable orders and quotes
at the same price are executed in full.
---------------------------------------------------------------------------

    Like Unrelated Orders, a Legging Order must be executable to
prematurely terminate the PIP or execute with the PIP Order. If a
Legging Order is not executable, the PIP will continue through its
duration.
Executable Orders on Same Side as a PIP Order
    The generation of a Legging Order that is on the same side as the
PIP Order and whose price is executable against the opposite side BBO,
an Improvement Order, a Legging Order, or the Primary Improvement
Order, will cause the PIP to terminate early and the PIP Order will
execute pursuant to proposed Rule 7150(f)(3).\64\
---------------------------------------------------------------------------

    \64\ See proposed Rule 7150(i).
---------------------------------------------------------------------------

    The following example shows how Legging Orders on the same side as
the PIP Order will interact in a PIP on a single Leg:

Example 13: Executable Legging Order on Same Side as PIP Order

    BOX Book for Option A is:

Primary Improvement Order to buy 15 at $1.01
Legging Order to buy 10 at $1.02
Order to buy 10 at $1.00
Order to buy 5 at $0.99
PIP Order to sell 15 at $1.01
Order to sell 10 at $1.05
Order to sell 20 at $1.06

    BOX Book for Option B is:

Legging Order to buy 10 at $1.02
Order to buy 15 at $1.00
Order to sell 50 at $1.05

    Complex Order Book for Strategy A+B:

Complex Order to buy 10 at $2.07
Implied Order to sell 10 at $2.10

    The Complex Order to buy 10 A+B at $2.07 was received after the
start of the PIP. Subsequently, an order on the BOX Book to sell 5 A at
$1.02 is received prior to the end of the PIP on A. As this order is
executable against the Legging Order at $1.02, the PIP will terminate
prematurely and the PIP Order will execute to sell 10 at $1.02 against
the Legging Order to buy 10 at $1.02. Thereafter, the BOX Trading Host
will execute a purchase of 10 B at $1.05 to complete the Complex Order.
The 5 remaining contracts of the PIP Order will execute at $1.01 with
the PIP Primary Improvement Order.

Example 14: Executable Legging Order on Same Side as PIP Order

    Assume the same initial facts as in Example 13 above, except that
the Complex Order received after the start of the PIP is to buy 10 A+B
at $2.06, in which case the Legging Orders on Option A and Option B are
generated to buy 10 at $1.01 each. The order books would be as follows:
    BOX Book for Option A is:

Primary Improvement Order to buy 15 at $1.01
Legging Order to buy 10 at $1.01
Order to buy 10 at $1.00
Order to buy 5 at $0.99
PIP Order to sell 15 at $1.01
Order to sell 10 at $1.05
Order to sell 20 at $1.06

    BOX Book for Option B is:

Legging Order to buy 10 at $1.01
Order to buy 15 at $1.00
Order to sell 50 at $1.05

    Complex Order Book for Strategy A+B:

Complex Order to buy 10 at $2.06
Implied Order to sell 10 at $2.10

    Subsequently, an order to sell 5 A at $1.01 is received, causing
the PIP to terminate early. However, in this case, the PIP Order would
trade with the Primary Improvement Order at $1.01 because all other
orders have priority over Legging Orders at the same price. After the
completion of the PIP, the sell order for 5 at $1.01 would execute
against the Legging Order to buy 5 at $1.01. Thereafter, the BOX
Trading Host will execute a purchase of 5 B at $1.05 to complete the
Complex Order.
Executable Orders on Opposite Side of a PIP Order
    The generation of a Legging Order that is on the opposite side of
the PIP Order and can be executed against the opposite side NBBO, BBO,
or a Legging Order, will trade against the PIP Order at one cent better
than NBBO if BBO is equal to NBBO, or at NBBO if BBO is worse than
NBBO.\65\
---------------------------------------------------------------------------

    \65\ See proposed Rule 7150(j).
---------------------------------------------------------------------------

    The following example shows how Legging Orders on the opposite side
of the PIP Order will interact in a PIP on a single Leg.

Example 15: Executable Legging Order on Opposite Side of PIP Order

    BOX Book for Option A is:

Primary Improvement Order to buy 15 at $1.01
Order to buy 10 at $1.00
Order to buy 5 at $0.99
PIP Order to sell 15 at $1.01
Order to sell 10 at $1.05
Order to sell 20 at $1.06

    BOX Book for Option B is:

Order to buy 15 at $1.00
Order to sell 50 at $1.03

    Complex Order Book for Strategy A+B:

Implied Order to buy 10 at $2.00
    Assume NBBO for A is $1.00 and $1.04. While the PIP is underway, a
Complex Order on A+B to buy 10 at $2.07 is received, generating a
Legging Order to buy 10 A at $1.04. Since the Legging Order can execute
against the NBBO offer on A at $1.04, the Legging Order to buy 10 A at
$1.04 will execute with the PIP Order. Thereafter, the BOX Trading Host
will execute a purchase of 10 B at $1.03 to complete the Complex Order.
d. Related Modifications to Rules
    The following discusses proposed additional changes to the rules
necessitated by the rule changes discussed above.
(1) HSVF Broadcast
    The Exchange proposes to amend Rule 7130(a)(2)(iv) (Execution and
Price/Time Priority) to add Implied Orders and Legging Orders to the
specific items that are displayed to BOX Options Participants through
the proprietary High Speed Vendor Feed (``HSVF''). The HSVF is made
available to all BOX Options Participants at no charge and, currently,
the five best limit prices for single Legs on BOX are provided through
the HSVF. The proposed amendment to Rule 7130(a)(2)(iv) will provide
that the five best price limit prices and the best-ranked Legging Order
(if any), as applicable and defined in Rule 7240(c)(1), will be
provided through HSVF for each Leg. Additionally, the Exchange proposes
that the five best limit prices and the best-ranked Implied Order (if
any), as defined in Rule

7240(d)(1), will be provided through HSVF for each Strategy. All the
other items in the HSVF as set forth in Rule 7130(a)(2) will also apply
to Complex Orders.
(2) Definitions
    The Exchange proposes to amend the definition of ``Central Order
Book'' or ``BOX Book'' in Rule 100(a)(10) to mean the electronic book
of orders on each single option series maintained by the BOX Trading
Host. The Exchange believes this clarifying change will convey the
intended meaning to exclude Complex Orders from this definition.
    The Exchange proposes to amend existing Rule 100(a)(33) to include
definitions of ``NBB'' to mean the national best bid and ``NBO'' to
mean the national best offer, each as calculated by BOX based on market
information received by BOX from OPRA. These definitions are necessary
to support the definitions of ``cNBB'' and ``cNBO'' in proposed Rule
7240(a).
    The Exchange proposes that the terms ``cBBO'' be defined to mean
the best net bid and offer price for a Complex Order Strategy based on
the BBO on the BOX Book for the individual options components of such
Strategy, ``cNBB'' be defined to mean the best net bid price for a
Complex Order Strategy based on the NBBO for the individual options
components of such Strategy, ``cNBBO'' be defined to mean the best net
bid and offer price for a Complex Order Strategy based on the NBBO for
the individual options components of such Strategy, and ``cNBO'' be
defined to mean the best net offer price for a Complex Order Strategy
based on the NBBO for the individual options components of such
Strategy.\66\
---------------------------------------------------------------------------

    \66\ See proposed Rule 7240(a)(1)-(4).
---------------------------------------------------------------------------

    The Exchange proposes to amend the definition of ``Complex Order''
in Rule 7240(a)(5) to mean any order involving the simultaneous
purchase and/or sale of two or more different options series in the
same underlying security, for the same account, in a ratio that is
equal to or greater than one-to-three (.333) and less than or equal to
three-to-one (3.00) and for the purpose of executing a particular
investment strategy.\67\
---------------------------------------------------------------------------

    \67\ See proposed Rule 7240(a)(5). See ISE Rule 722(a)(1). See
also, the definition of ``Complex Trade'' in the Options Order
Protection and Locked/Crossed National Market System Plan Securities
Exchange Act Release No. 60405 (July 30, 2009), 74 FR 39362 (August
6, 2009). See also Exchange Rule 15000(e) and ISE Rule 1900(d).
---------------------------------------------------------------------------

    The Exchange proposes that the term ``Complex Order Book'' be
defined to mean the electronic book of Complex Orders maintained by the
BOX Trading Host.\68\
---------------------------------------------------------------------------

    \68\ See proposed Rule 7240(a)(6).
---------------------------------------------------------------------------

    The Exchange proposes that the term ``Complex Order Strategy'' or
``Strategy'' be defined to mean a particular combination of components
of a Complex Order and their ratios to one another.\69\ The Exchange
also specifies in this rule that BOX will assign a Strategy identifier
to each Strategy.
---------------------------------------------------------------------------

    \69\ See proposed Rule 7240(a)(7).
---------------------------------------------------------------------------

(3) Minimum Increments
    The Exchange proposes Rule 7240(b)(1) to provide that bids and
offers on a Strategy (i.e., any Complex Order) may be expressed in any
decimal price, and that the Legs of a Complex Order may be executed in
one cent increments, regardless of the minimum increments otherwise
applicable to the individual Legs of the Complex Order. The Exchange
also proposes to delete a reference to Stock-Option Order consistent
with the change to existing Rule 7240(b)(3) discussed below. Further,
the Exchange proposes to delete a reference to priority for Complex
Orders at a net price that is not a multiple of the minimum increment.
The Exchange believes that this provision is unnecessary if Complex
Orders may be expressed in any decimal price.
(4) Elimination of Unnecessary Order Types
    The Exchange proposes to delete existing Rule 7240(b)(3) regarding
Execution of Complex Orders and is proposing various new provisions
discussed above regarding Complex Order execution. In connection with
amending the definition of Complex Order, the Exchange proposes to
delete references to the various types of Complex Orders previously
included in the rules (Spread, Straddle, Strangle, Combination, Ratio,
Butterfly Spread, BOX Spread and Collar) because these designations
will be unnecessary upon implementation of the other proposed rule
changes. References to certain order types (Stock-Option Orders and
SSF-option Orders) are proposed to be deleted because BOX does not have
these order types. If these order types are to be traded on BOX in the
future, the Exchange will file an appropriate rule change under Section
19(b)(1) of the Act.\70\
---------------------------------------------------------------------------

    \70\ 15 U.S.C. 78s(b)(1).
---------------------------------------------------------------------------

    The Exchange proposes deleting Rule 7240(b)(4) regarding Types of
Complex Orders, to be replaced by newly proposed 7240(b)(4) discussed
above. Additionally, the Exchange proposes renumbering Rule 7240(b)(5),
which prohibits Complex Orders being submitted to BOX as Directed
Orders or to the PIP, to proposed 7240(b)(4)(iii). The Exchange also
proposes deleting Rule 7240(c) regarding how a Participant may propose
trading a Strategy on BOX. The planned implementation of the new BOX
functionality for Complex Orders will permit Participants to create a
Strategy simply by submitting a Complex Order for that Strategy to BOX.
The current provision describes a more manual process for establishing
a Strategy that will now be unnecessary and thus, not applicable. As
such, the Exchange believes it is appropriate to delete this provision.
The Exchange proposes to also delete IM-7240-1 regarding trading Stock-
Option Orders and SSF-option Orders as inapplicable because BOX does
not have these order types.
(5) BOX Trading System Capacity
    The number of Strategies created on a Complex Order Book requires
adequate systems support and overhead and the number of different
Strategies that could be created is nearly endless. Complex Order
transactions represent approximately one-fourth of overall options
industry volume. Complex Order trading is generally concentrated in a
limited number of classes. However, the Complex Order market relies on
orders rather than the standard options market reliance on quoted
liquidity. As a result, message traffic for Complex Orders is only a
fraction of the overall options market. BOX maintains a rigorous
capacity planning program that monitors system performance and
projected capacity demands. This program is designed to ensure that the
system has sufficient capacity to support existing and future trading
needs of BOX. As a general matter, the Exchange considers the potential
impact on systems capacity of all new initiatives. In particular, the
Exchange analyzed the potential for additional message traffic
resulting from implementation of this Complex Order proposal and
concluded that the Exchange has sufficient systems capacity to handle
this implementation without degrading systems performance.
    Consistent with the limitations set forth in proposed Rule 7240(d)
and above, the Exchange will closely monitor the generation of Implied
Orders to ensure that they do not negatively impact system capacity and
performance. The Exchange also will closely monitor the generation of
Legging Orders to ensure that they do not negatively impact system
capacity and performance. While generating

Implied Orders and Legging Orders does require additional systems
processes, the Exchange expects the impact of these activities to be
negligible under all but the most severe market conditions. Therefore,
the Exchange believes that it possesses sufficient capacity to meet
investor demand.
2. Statutory Basis
a. Principles of Complex Orders and Interaction With the BOX Book
    The proposed rule change is consistent with the requirements of the
Act and the rules and regulation thereunder applicable to the Exchange
as required by Section 19(b)(2) of the Act.\71\ As described more fully
below, the Exchange believes that the proposal is consistent with the
requirements of Section 6(b) of the Act,\72\ in general, and furthers
the objectives of Section 6(b)(5) of the Act \73\ in particular, in
that it is designed to prevent fraudulent and manipulative acts and
practices, to promote just and equitable principles of trade, to foster
cooperation and coordination with persons engaged in regulating,
clearing, settling, processing information with respect to, and
facilitating transactions in securities, to remove impediments to and
perfect the mechanism of a free and open market and a national market
system, and, in general, to protect investors and the public interest.
---------------------------------------------------------------------------

    \71\ 15 U.S.C. 78s(b)(2).
    \72\ 15 U.S.C. 78f(b).
    \73\ 15 U.S.C. 78f(b)(5).
---------------------------------------------------------------------------

    The proposed rule changes are consistent with the Act and further
the foregoing objectives of Section 6(b)(5) of the Act \74\ by
increasing interaction between Complex Orders and interest on the BOX
Book, including components of Complex Order Strategies; providing
greater liquidity by providing increased opportunity for order
execution; and improving execution prices compared to those otherwise
available in the market.
---------------------------------------------------------------------------

    \74\ 15 U.S.C. 78f(b)(5).
---------------------------------------------------------------------------

    The Exchange believes this proposal is a reasonable modification to
its rules, designed to facilitate increased interaction between orders
on the Complex Order Book and orders on the BOX Book, and to do so in
such a manner as to ensure a dynamic, real-time trading mechanism that
maximizes the opportunity for trade executions for both Legs and
Complex Orders. The Exchange believes that it is appropriate and
consistent with the Act, for the purpose of clarity and in the public
interest, to (i) adopt the proposed amendments to Rules 100(a)(10) and
100(a)(33), (ii) adopt the proposed amendments to Rule 7110(c)(2),
(iii) adopt the proposed amendments to Rule 7130(a)(2)(iv), (iv) adopt
the proposed amendments to Rules 7150(f)(3), 7150(i) and 7150(j), and
(v) delete in its entirety the existing provisions of Rule 7240
(Complex Orders) and adopt the proposed Rule 7240.
b. Complex Order Execution and Priority
    The Exchange believes the proposed rule changes will result in more
efficient trading and reduce the risk that Complex Orders fail to
execute for investors by providing additional opportunities to fill
Complex Orders, and that the changes are consistent with the Act. The
Exchange believes that increased interaction, where possible, on a
continuous and real-time basis of the bids and offers on each Leg
comprising a Strategy with the bids and offers on the corresponding
Strategy and vice versa, through Implied Orders and Legging Orders,
will benefit market participants and investors. The proposed rule
changes will allow Complex Orders to interact with interest on the BOX
Book and, conversely, allow interest on the BOX Book to interact with
Complex Orders in an efficient and orderly manner. Orders on the BOX
Book comprising a Strategy may interact with Complex Orders on the
Strategy and a combination of a Complex Order and an order on a Leg
comprising the Complex Order may also interact with orders on other
Legs comprising the Strategy.
    The Exchange also believes the interaction of orders will benefit
investors by increasing the opportunity for Complex Orders to receive
execution, while also enhancing execution quality for orders on the BOX
Book. Generally, the options industry rules for the execution of
Complex Orders, and the current Exchange Rules, provide that two
Complex Orders may execute against one another if the execution prices
of the component Legs result in a net price that is better than the
best customer limit order available for the individual component Legs.
This permits an exchange, when executing two Complex Orders against one
another, to execute each component Leg on the market's best bid or
offer so long as the execution does not trade ahead of customer
interest.
    The Exchange believes the proposed rule change for trading Complex
Orders on BOX is a step forward in options Complex Order execution. The
proposed rules require that, before executing against another Complex
Order, a Complex Order on BOX will execute first against orders on the
BOX Book if the net price of such orders is equal to the best price on
the Complex Order Book, provided that all of the orders on the BOX Book
are equal to or better than their respective NBBO.\75\ The Exchange
believes this is consistent with the Act and represents two
improvements to the rules on other options exchanges regarding Complex
Order trading: (i) The priority of the BOX Book is not limited to ``if
any of the bids or offers established in the marketplace consist of a
Customer Order'' \76\ and (ii) any Complex Order execution, whether
against another Complex Order or against interest on the BOX Book, will
be at a price at least equal to the cNBBO.\77\ Thus, each Leg of a
Complex Order will be executed at a price that is equal to or better
than NBBO and BBO for that series.
---------------------------------------------------------------------------

    \75\ See proposed Rule 7240(b)(3).
    \76\ See, e.g., ISE Rule 722(b)(2).
    \77\ ``cNBBO'' is defined as the ``the best net bid and offer
price for a Complex Order Strategy based on the NBBO for the
individual options components of such Strategy.'' See proposed Rule
7240(a)(3).
---------------------------------------------------------------------------

    A Complex Order will execute against other Complex Orders resting
on the Complex Order Book if the net price is better than cBBO \78\ and
is equal to or better than the cNBBO,\79\ except in the case of Complex
Orders on Non-standard Strategies as described below. The proposed
definitions of cBBO and cNBBO are consistent with the rules of another
options exchange as previously approved by the Commission. Therefore,
the Exchange believes this proposed change is consistent with the goals
of the Act that an Exchange's rules be designed to remove impediments
to and to perfect the mechanism of a free and open market and a
national market system, and, in general, to protect investors and the
public interest.
---------------------------------------------------------------------------

    \78\ ``cBBO'' is defined as ``the best net bid and offer price
for a Complex Order Strategy based on the BBO on the BOX Book for
the individual options components of such Strategy.'' See proposed
Rule 7240(a)(1) and Commentary .08(a)(iv) to PHLX Rule 1080.
    \79\ ``cNBBO'' is defined as ``the best net bid and offer price
for a Complex Order Strategy based on the NBBO for the individual
options components of such Strategy.'' See proposed Rules 7240(a)(3)
and 7240(b)(3)(iii)(A). See also, Commentary .08(a)(vi) to PHLX Rule
1080.
---------------------------------------------------------------------------

    The exception to the priority of the BOX Book is the execution of a
Complex Order on Non-standard Strategies,\80\ as provided in proposed
Rule 7240(b)(2)(ii). Complex Orders for Non-standard Strategies will
execute against interest on the BOX Book for the individual Legs of the
Strategy for all of

the quantity available at the best price in a permissible ratio until
the quantities remaining on the BOX Book are insufficient to execute
against the Complex Order while respecting the ratio. Following such
execution, the remaining quantity of the Complex Order may execute
against other Complex Orders and the component Legs of the Complex
Order may trade at prices equal to the corresponding prices on the BOX
Book (for more detail, see Example 5 above related to Non-standard
Strategies).
---------------------------------------------------------------------------

    \80\ ``Complex Order Strategy'' or ``Strategy'' is defined as
``a particular combination of components of a Complex Order and
their ratios to one another. BOX will assign a strategy identifier
to each Strategy.'' See proposed Rule 7240(a)(7).
---------------------------------------------------------------------------

    The Exchange proposes to apply the straightforward principle of
allowing execution of a Complex Order against another Complex Order
when interest on the BOX Book at the same net price has already been
executed. Thus, the execution price will be at a price better than cBBO
(except in the case of insufficient quantity for Non-standard
Strategies where the execution could occur at a price equal to cBBO).
In the case of Non-standard Strategies, interest on the BOX Book will
still have priority and be executed before a Complex Order, to the
extent that there is sufficient quantity on the BOX Book to respect the
ratio of the Strategy.
    The Exchange believes its proposed rules regarding executions of
Non-standard Strategies are consistent with the goals of the Act to
remove impediments to and perfect the mechanism of a free and open
market and a national market system; and, in general, to protect
investors and the public interest. In particular, the proposed rules
ensure that interest on the BOX Book will have priority to the extent
sufficient quantity exists on each Leg to respect the ratio of the
Strategy.\81\ Thereafter, Complex Orders for a Non-standard Strategy
may execute against one another and the component Legs of the Complex
Orders may trade at prices equal to the corresponding prices on the BOX
Book. The proposed rules prevent circumstances that may otherwise
create a locked market on the Complex Order Book or require rejection
of an incoming Complex Order that is executable against a resting
Complex Order. In the absence of these safeguards, otherwise executable
Complex Orders would lose opportunities for execution without any
compensating benefit to interest on the BOX Book that are unable to
interact with the incoming Complex Order. Accordingly, the Exchange
believes that it proposes the best solution to the dilemma consistent
with the requirements of the Act, and specifically Section 6(b)(5)
thereof.\82\ Furthermore, the Exchange believes this procedure is
consistent with the intent of the principle that a Complex Order
execute ``at least one Leg better than BBO for each options
instrument'' as this principle obviously assumes that there is
sufficient quantity to respect the ratio of a Complex Order when prices
are otherwise in line. In other words, orders can only execute against
orders and an order must have both a price and a quantity. Therefore,
the Exchange believes the proposed rules regarding executions of Non-
standard Strategies will benefit market participants and investors,
provide additional opportunities for market participants to obtain
executions of their Non-standard Strategies and thus, create a more
efficient market. As such, the Exchange believes the proposal is
consistent with the goals of the Act.
---------------------------------------------------------------------------

    \81\ See proposed Rule 7240(b)(2)(ii).
    \82\ 15 U.S.C. 78f(b)(5).
---------------------------------------------------------------------------

    In requiring this, the principle is designed to ensure that at
least one Leg will execute at a price better than BBO, except in the
limited circumstance where there is insufficient quantity, with respect
to one of the Legs, on the BOX Book to respect the ratio of the Complex
Order. The Exchange believes the proposed rule change is a step forward
in Complex Order execution because Implied Orders and Legging Orders
will increase the interaction of orders on BOX and increase
opportunities for order execution. Additionally, the proposed rules for
filtering Complex Orders against NBBO should provide Complex Order
executions at prices comparably better than otherwise available in the
market.\83\ As such, the Exchange believes the proposed rule change
regarding Complex Order execution and priority is consistent with the
goals of the Act to remove impediments to and to perfect the mechanism
of a free and open market and a national market system, and to protect
investors and the public interest.
---------------------------------------------------------------------------

    \83\ See proposed Rule 7240(b)(3)(iii).
---------------------------------------------------------------------------

    Other exchange rules currently provide that an incoming Complex
Order would trade with a Complex Order that is resting on the Complex
Order Book, unless the best bid/offer on either of the component Legs
of the Strategy were a customer.\84\ For the reason stated below, the
Exchange is proposing no such limitation to restrict Complex Order
execution on BOX. Because of the priority of the BOX Book over the
Complex Order Book in the proposed rule change, a Complex Order will
execute first against the BOX Book with respect to each component Leg,
and any subsequent execution of the remaining quantity of the Complex
Order will be at a price that ensures that ``at least one Leg of the
Complex Order must trade at a price that is better than the
corresponding bid or offer in the marketplace,'' \85\ (i.e., on BOX, at
least one Leg of the Complex Order will execute at a price better than
BBO), except for Complex Orders on Non-standard Strategies, which may
be executed against other Complex Orders and the component Legs of the
Complex Orders may trade at prices equal to the corresponding prices on
the BOX Book.
---------------------------------------------------------------------------

    \84\ See, e.g., ISE Rule 722(b)(2) and Commentary .08(c)(iii) to
PHLX Rule 1080.
    \85\ See proposed Rule 7240(b)(2)(i).
---------------------------------------------------------------------------

    This principle is not limited to instances where a customer limit
order is at a price equal to the BBO. Because the component Leg Orders
of a Complex Order will have priority and this interest on the BOX Book
can execute with a Complex Order on the opposite side of the market,
the proposed rule change would ensure that no resting Complex Orders
trade before orders on the BOX Book for the component Legs. The
Exchange believes this will provide greater opportunities for
executions of Complex Orders on BOX, and will benefit the overall BOX
market for the component Legs as well.
    For the reasons set forth above, the Exchange believes the proposed
rule change regarding Complex Order execution, and the priority
proposed for interest on the BOX Book, is consistent with the goals of
the Act to remove impediments to and to perfect the mechanism of a free
and open market and a national market system, and to protect investors
and the public interest.
(1) Implied Orders and Priority of the BOX Book
    The Exchange proposes to define an Implied Order to mean ``a
Complex Order at the cNBBO, derived from the orders at the BBO on the
BOX Book for each component Leg of a Strategy, provided each component
Leg is at a price equal to NBBO for that series.'' \86\ The Exchange
believes the generation of Implied Orders is consistent with the goals
of the Act to remove the impediments to and perfect the mechanism of a
free and open market because their addition to the marketplace should
facilitate additional transactions and interaction between orders on
the Complex Order Book and orders on the BOX Book. The Exchange
believes the addition of Implied Orders to the BOX market will benefit
market makers, traders, and retail investors trading on BOX by
enhancing execution quality and the likelihood and

efficiency of trade execution. In the absence of the proposed rule,
Complex Orders that would otherwise execute against interest on the BOX
Book would not trade.
---------------------------------------------------------------------------

    \86\ See proposed Rule 7240(d)(1).
---------------------------------------------------------------------------

    Implied Orders are generated and broadcast for Strategies with two
Legs and with a ratio of one-to-one.\87\ This limitation results in a
manageable and useful set of possible Implied Orders, removing
impediments to and perfecting the mechanism of a free and open market.
Limiting Implied Orders to Strategies with two Legs and with a ratio of
one-to-one is consistent with the purposes of the Act because the
massive number of different, potential Strategies for which Implied
Orders could otherwise be generated would be unwieldy and consume
significant system resources generating, screening and displaying
unnecessary Implied Orders, resulting in a less efficient market.
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    \87\ See proposed Rule 7240(d)(3).
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    An Implied Order for a Strategy is calculated and broadcast if each
of the prices of the component Leg Orders is equal to NBBO.\88\ When an
Implied Order is no longer at the cNBBO, the Implied Order will be
removed and a new Implied Order will be generated, provided there is
interest on the BOX Book to generate an Implied Order at the new
cNBBO.\89\ Also, an Implied Order is not generated if the subject
series is going through NBBO exposure pursuant to Rule 7130(b), or
using orders in the PIP, Facilitation Auction, or Solicitation
Auction.\90\ Implied Orders will be removed if either component Leg
Order is executed in full, or in part, or cancelled.\91\ Until such
removal, Implied Orders provide additional likelihood and efficiency of
trade execution in furtherance of the goals of the Act. Applying the
limitations set forth in proposed Rule 7240(d) and above, the Exchange
will closely monitor the generation of Implied Orders to ensure they do
not negatively impact system capacity and performance.
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    \88\ See proposed Rules 7130(a)(2)(iv) and 7240(d)(1).
    \89\ See proposed Rule 7240(d)(2).
    \90\ See proposed Rule 7240(d)(4).
    \91\ See proposed Rule 7240(d)(5).
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    The Exchange believes automatically generating Implied Orders will
provide additional execution opportunities for Complex Orders and
interest on the BOX Book and thus, enhance execution quality for
investors on BOX. The Exchange believes the additional opportunities
for potential execution through the interaction of orders on the
Complex Order Book and orders on the BOX Book as achieved through
Implied Orders, and the potential for enhanced execution quality, as
outlined above, promote just and equitable principles of trade, remove
impediments to and perfect the mechanism of a free and open market, are
in the public interest and, therefore, consistent with the Act.
    The Exchange believes the principles set forth in this proposal
regarding Complex Order execution and priority are an improvement over
the existing rules in the marketplace, and further, are consistent with
the goals of the Act to promote just and equitable principles of trade,
to prevent fraudulent and manipulative acts, to remove impediments to
and to perfect the mechanism of a free and open market and a national
market system, and, in general, to protect investors and the public
interest.
(2) Valid Complex Order Types
    The Exchange proposes that Complex Orders may be entered as Fill-
and-Kill Orders, Limit Orders, BOX-Top Orders, Market Orders, or
Session Orders, each as defined in Rule 7110.\92\ The proposed order
types currently exist on BOX today with regard to orders on the BOX
Book and the Exchange proposes to apply them to Complex Orders. In
particular, the Exchange believes that Fill-and-Kill Orders, Limit
Orders, BOX-Top Orders, and Session Orders all provide valuable
limitations on execution price and time that may protect Participants
and investors. Additionally, Session Orders reduce the risk of
erroneous or stale orders on the Complex Order Book in the event that a
Participant encounters unforeseen systems issues with its connectivity
with BOX. The Exchange believes that permitting Complex Orders to be
entered with these varying order types will give Participants greater
control and flexibility over the manner and circumstances in which
their orders may be executed, modified, or cancelled, and thus, will
provide for the protection of investors and contribute to market
efficiency. Accordingly, the Exchange believes the proposed rule change
is consistent with the Act.
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    \92\ See proposed Rule 7240(b)(4)(i).
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c. Legging Orders
    Legging Orders may be automatically generated on behalf of a
Complex Order so they are represented at the BBO on individual
Legs.\93\ A Legging Order is executed after all other executable orders
and quotes at the same price are executed in full.\94\ When a Legging
Order is executed, the other component Leg of the Complex Order will be
automatically executed against the BBO.\95\ At the same price on the
BOX Book, Legging Orders will be executed in time priority according to
the corresponding Complex Order entry time.\96\ Legging Orders will
only be eligible for execution after being filtered against NBBO
pursuant to 7130(b).\97\
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    \93\ See proposed Rule 7240(c)(2).
    \94\ See proposed Rule 7240(c)(3).
    \95\ See proposed Rule 7240(c)(3).
    \96\ See proposed Rule 7240(c)(3).
    \97\ See proposed Rule 7240(c)(3).
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    The Exchange believes that automatically generating Legging Orders,
which will be executed after all other executable interest at the same
price is executed in full, will provide additional execution
opportunities for Complex Orders without negatively impacting any
investors in the regular market.\98\ In fact, the generation of Legging
Orders may enhance execution quality for investors on the BOX Book by
improving the price and/or size of the BBO and by providing additional
execution opportunity for resting interest on the BOX Book.
---------------------------------------------------------------------------

    \98\ See NOM Approval Order, SEC Release No. 34-57478 (March 12,
2008) 73 FR 14521 at 14529-14530 (March 18, 2008).
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    The Exchange also believes that the generation of Legging Orders is
compliant with Rule 602 of Regulation NMS (the ``Quote Rule'') because
each Legging Order is a firm order that is included in the BBO if it is
equal to or better than the otherwise existing BBO.\99\ The Quote Rule
requires responsible brokers and dealers to be firm for their quotes.
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    \99\ See NOM Approval Order, SEC Release No. 34-57478 (March 12,
2008) 73 FR 14521 at 14528-14529 (March 18, 2008).
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(1) Increments
    The Exchange proposes that a Legging Order will be placed on the
BOX Book at its generated price to buy (sell) and will be displayed at
the minimum trading increment permitted for the series (rounding down
to the nearest valid increment for the series for buy orders and up to
the nearest valid increment for the series for sell orders). Legging
Orders will be automatically generated at prices in one cent increments
but, for series trading in nickels or other larger increments, will be
displayed at the nearest minimum trading increment for the series.\100\
The Exchange believes Legging Orders will provide market participants
greater ability to execute trades at prices between the minimum trading
increments for these series.\101\
---------------------------------------------------------------------------

    \100\ See proposed Rule 7240(c)(1).
    \101\ See NOM Approval Order, SEC Release No. 34-57478 (March
12, 2008) 73 FR 14521 at 14529-14530 (March 18, 2008).

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    The Exchange believes Legging Orders will increase opportunities
for execution of Complex Orders, potentially increase executions of
interest on the BOX Book, and will lead to tighter spreads and finer
pricing on BOX. While Legging Orders may not always be displayed at
their actual penny increment price, Legging Orders will provide
investors the opportunity to trade at a better price than would
otherwise be available--inside the disseminated best bid and offer for
a particular Leg. The Exchange believes that this opportunity for
investors to receive executions inside the disseminated BBO could
result in better executions for investors, and that Legging Orders are
consistent with the Act.\102\
---------------------------------------------------------------------------

    \102\ See NOM Approval Order, SEC Release No. 34-57478 (March
12, 2008) 73 FR 14521 at 14529 (March 18, 2008).
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    When a BOX-Top Order executes against a Legging Order at a one cent
increment in a series traded in a larger increment, the Exchange
proposes that any remaining BOX-Top Order quantity will be priced,
ranked and displayed on the BOX Book at the nearest increment tick
permitted for the series (rounded up (down) in the case of a sell (buy)
order).\103\ The Exchange notes for comparison that market orders are
executed at the best price obtainable for the total quantity available
when the order reaches the BOX market and any remaining quantity is
executed at the next best price available for the total quantity
available. This process continues until the Market Order is fully
executed. Use of a BOX-Top Order maintains the initial execution price
as a limit on the execution of the remainder of an order. BOX-Top
Orders have existed on BOX since its inception because they are
designed to remove impediments to and to perfect the mechanism of a
free and open market and a national market system, and, in general,
protect investors and the public interest and the Exchange believes the
continued use of this order type is consistent with the Act.\104\
---------------------------------------------------------------------------

    \103\ See proposed Rule 7110(c)(2).
    \104\ See Securities Exchange Act Release No. 49068 (January 13,
2004) 69 FR 2796 (January 20, 2004).
---------------------------------------------------------------------------

(2) Proposed Amendments to PIP on Legging Orders
    Legging Orders may be automatically generated on behalf of a
Complex Order so they are represented on the BOX Book at the BBO for
the individual Legs, and will be eligible for execution after being
filtered against NBBO. At the conclusion of a PIP, Legging Orders will
be executed after all other executable orders and quotes at the same
price are executed in full.\105\ Therefore, the Exchange believes it is
appropriate and consistent with the Act that Legging Orders be treated
as other orders on the BOX Book are treated in connection with the PIP,
subject to the same process and priority.
---------------------------------------------------------------------------

    \105\ See proposed Rule 7150(f)(3).
---------------------------------------------------------------------------

    Proposed amendments to Rules 7150(i) and 7150(j) reflect that
Legging Orders on the BOX Book will be treated, in connection with the
PIP, in the same manner as Unrelated Orders are treated currently.
Existing Rule 7150(a) defines Unrelated Order as a non-Improvement
Order entered in the BOX market during a PIP. A Legging Order may be
generated on the BOX Book for a Leg while a PIP on that Leg is
underway. The Commission has previously found the Exchange's treatment
of Unrelated Orders received during the PIP consistent with the
Act.\106\ Legging Orders generated during a PIP are treated in the same
manner as Unrelated Orders received during a PIP and will interact with
orders in the PIP in the same manner as Unrelated Orders.\107\ A
Legging Order is executed only after all other executable orders and
quotes at the same price are executed in full. As a result, the
Exchange believes the proposed changes regarding Legging Orders and
their interaction with a PIP on a Leg is consistent with the Act.
---------------------------------------------------------------------------

    \106\ See Securities Exchange Act Release No. 55415 (March 7,
2007) 72 FR 11411 (March 13, 2007) (Approval Order Relating to the
Treatment of Limit Orders Submitted to BOX During a PIP).
    \107\ See proposed Rules 7150(f)(3) and 7150(i)--(j).
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d. Related Modifications to Rules
(1) HSVF
    The Exchange proposes to add Complex Orders, Implied Orders and
Legging Orders to the specific items that are displayed to Participants
through the proprietary HSVF.\108\ In adopting Regulation NMS, the
Commission granted self-regulatory organizations and broker-dealers
increased authority and flexibility to offer new and unique market data
to the public. It was believed that this authority would expand the
amount of data available to consumers, and also spur innovation and
competition for the provision of market data. The Exchange believes
that the proposed rule change to add certain order information to the
HSVF adheres to those principles by promoting increased transparency
through the dissemination of more useful proprietary data and also by
clarifying its availability to Participants. The HSVF is made available
to all market participants at no charge. The Exchange is making a
voluntary decision to make this data available, unlike the BBO which
must be made available under the Act. The Exchange chooses to make the
data available as proposed in order to improve market quality, to
attract order flow, and to increase transparency. The Exchange believes
this proposed change to make certain additional order information
available through the HSVF is designed to remove impediments to and to
perfect the mechanism of a free and open market and a national market
system, and, in general, will protect investors and the public
interest, consistent with the Act.
---------------------------------------------------------------------------

    \108\ See proposed Rule 7130(a)(2)(iv).
---------------------------------------------------------------------------

(2) Complex Order Definition
    The Exchange believes that amending the definition of a Complex
Order in Rule 7240(a) is consistent with the Act. The Exchange notes
that the definition is consistent with the rules of other options
exchanges and with the definition of ``Complex Trade'' in the Options
Order Protection and Locked/Crossed National Market System Plan.\109\
Therefore, the Exchange believes this proposed change is consistent
with the goals of the Act that an Exchange's rules be designed to
remove impediments to and perfect the mechanism of a free and open
market and a national market system, and, in general, to protect
investors and the public interest.
---------------------------------------------------------------------------

    \109\ See ISE Rule 722(a)(1). See also, the definition of
``Complex Trade'' in the Options Order Protection and Locked/Crossed
National Market System Plan, Securities Exchange Act Release No.
60405 (July 30, 2009), 74 FR 39362 (August 6, 2009). See also
Exchange Rule 15000(e) and ISE Rule 1900(d).
---------------------------------------------------------------------------

(3) Price Improvement Requirement
    Except in the case of Complex Orders on Non-standard Strategies
which may execute at a price equal to cBBO after executions against the
BOX Book, the Exchange proposes to allow two Complex Orders to execute
against each other at a net price that is better than cBBO by one
cent.\110\ On some options exchanges that provide auctions for Complex
Orders, a Complex Order may execute against another Complex Order if
one leg of the Complex Order trades at a price that is at least one
cent better than customer orders in the same series.\111\ On one
options exchange that has no auction for Complex Orders, a Complex
Order may execute against another Complex Order if one leg of the

Complex Order trades at a price that is better than priority customer
interest in that series by at least one minimum trading increment.\112\
---------------------------------------------------------------------------

    \110\ See proposed Rule 7240(b)(2)(i).
    \111\ See, e.g., Securities Exchange Act Release Nos. 57556
(March 26, 2008), 73 FR 18018 (April 2, 2008) (Order Approving CBOE-
2008-03) and 63558 (December 16, 2010) 75 FR 80553 (December 22,
2010) (Order Approving NYSEAmex-2010-100).
    \112\ See ISE Rule 722(b)(2).
---------------------------------------------------------------------------

    Although BOX is not proposing to establish an auction for Complex
Orders at this time, the Exchange believes that it is consistent with
the protection of investors and the public interest to permit Complex
Orders (other than Non-standard Strategies) to execute against each
other at a price that is better than cBBO by one cent, rather than the
minimum trading increment for one of the component series for the
following reasons.
    First, BOX will always execute Complex Orders first against
interest on the BOX Book to the extent the Complex Order can be
executed in full or in a permissible ratio by such interest.\113\
---------------------------------------------------------------------------

    \113\ See proposed Rule 7240(b)(3)(i) and (ii).
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    Second, the Exchange believes that one cent is a significant and
material improvement to customers.\114\ While BOX is not currently
proposing a Complex Order auction, the Exchange believes the BOX
Complex Order proposal is appropriate in light of the price competition
for Complex Orders on BOX driven by other features in the proposal. For
example, the Exchange believes that the generation of Legging Orders
will provide enhanced price competition and greater integration of the
BOX Book and BOX COB. Also, the Exchange notes that each leg of a
Complex Order must be executed at a price equal to NBBO. The Exchange
believes these benefits will enhance the efficiency of the BOX Book and
the BOX COB, and therefore, is consistent with the protection of
investors and the public interest.\115\
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    \114\ Various options mechanisms such as the BOX PIP and the NOM
price improving order have been implemented because it is recognized
that one cent is a significant and material improvement to
customers. See Securities Exchange Act Release Nos. 49068 (January
13, 2004), 69 FR 2775, 2799 (January 20, 2004) (SR-BSE-2002-15)
(Order Approving BOX Facility), and 57478 (March 12, 2008), 73 FR
14521 (March 18, 2008) (SR-NASDAQ-2007-004) (Order Approving NASDAQ
Options Market).
    \115\ The Chicago Board Options Exchange, Inc. permits trading
Complex Orders in $0.01 minimum increments, providing additional
price points at which Complex Orders could be executed. See
Securities Exchange Act Release Nos. 57556 (March 26, 2008), 73 FR
18018 (April 2, 2008) (Order Approving CBOE-2008-03).
---------------------------------------------------------------------------

    Third, the Exchange believes that permitting price improvement by
one cent rather than by the minimum trading increment could permit more
active Complex Order trading by allowing execution where participants
may not otherwise be willing to offer better prices in larger
increments.
    Fourth, since the implementation of the Penny Pilot Program, many
of the options instruments involved in Complex Order trading now
already have a minimum increment of one cent.\116\ As a result, even
though the initial implementation of complex order trading rules on
other exchanges largely pre-dates the Penny Pilot Program, the effect
of the Exchange's proposal is already implemented in a significant
portion of Complex Order trading on other options exchanges.
---------------------------------------------------------------------------

    \116\ The Penny Pilot Program has been in effect since January
26, 2007. See Securities Exchange Act Release No. 55155 (Jan. 23,
2007), 72 FR 4741 (Feb. 1, 2007) (SR-BSE-2006-49). At the beginning
of 2013, more than 350 classes of options are included in the Penny
Pilot Program. See BOX Regulatory Circular 2012-30, available online
at http://boxexchange.com/f_circulars/_RC-2012-30_Penny_Pilot_Classes_Listed_on_BOX.pdf.
---------------------------------------------------------------------------

    For all of the foregoing reasons, the Exchange believes the
proposed rule changes are consistent with the requirements of the Act
and the rules and regulations thereunder applicable to the Exchange.

(B) Self-Regulatory Organization's Statement on Burden on Competition

    The Exchange does not currently trade Complex Orders. While the
proposed rule changes would permit BOX to trade and display Complex
Orders, the Exchange expects that no market participant or investor
will have any additional cost or obligation with respect to the
Exchange, BOX or Complex Orders relating to the proposed rule changes.
No duties are imposed on any party by the proposed rule changes.
    The Exchange believes any impact of the proposed rule changes on
market participants or investors would be at least neutral and could
result in improved liquidity, finer pricing, better executions and
increased competition. The Exchange further believes the proposed rule
changes may facilitate additional executions for all BOX Options
Participants. Moreover, the Exchange believes the proposal will enhance
competition among the various markets for Complex Order execution,
potentially resulting in more active Complex Order trading.
    For these reasons, the Exchange does not believe the proposed rule
change will have any negative impact, and will not impose any burden,
on competition not necessary or appropriate in furtherance of the
purposes of the Act.

(C) Self-Regulatory Organization's Statement on Comments on the
Proposed Rule Change Received From Members, Participants, or Others

    The Exchange has neither solicited nor received written comments on
the proposed rule change.

III. Date of Effectiveness of the Proposed Rule Change and Timing for
Commission Action

    Within 45 days of the date of publication of this notice in the
Federal Register or within such longer period up to 90 days (i) as the
Commission may designate if it finds such longer period to be
appropriate and publishes its reasons for so finding or (ii) as to
which the Exchange consents, the Commission will:
    (A) By order approve or disapprove such proposed rule change, or
    (B) Institute proceedings to determine whether the proposed rule
change should be disapproved.

IV. Solicitation of Comments

    Interested persons are invited to submit written data, views, and
arguments concerning the foregoing, including whether the proposed rule
change, as amended, is consistent with the Exchange Act. Comments may
be submitted by any of the following methods:

Electronic Comments

     Use the Commission's Internet comment form (http://www.sec.gov/rules/sro.shtml); or
     Send an email to<EMAIL_ADDRESS>Please include
File Number SR-BOX-2013-01 on the subject line.

Paper Comments

     Send paper comments in triplicate to Elizabeth M. Murphy,
Secretary, Securities and Exchange Commission, 100 F Street NE.,
Washington, DC 20549-1090.

All submissions should refer to File Number SR-BOX-2013-01. This file
number should be included on the subject line if email is used. To help
the Commission process and review your comments more efficiently,
please use only one method. The Commission will post all comments on
the Commission's Internet Web site (http://www.sec.gov/rules/sro.shtml). Copies of the submission, all subsequent amendments, all
written statements with respect to the proposed rule change that are
filed with the Commission, and all written communications relating to
the proposed rule change between the

Commission and any person, other than those that may be withheld from
the public in accordance with the provisions of 5 U.S.C. 552, will be
available for Web site viewing and printing in the Commission's Public
Reference Room, 100 F Street NE., Washington, DC 20549, on official
business days between the hours of 10:00 a.m. and 3:00 p.m. Copies of
the filing also will be available for inspection and copying at the
principal office of the Exchange. All comments received will be posted
without change; the Commission does not edit personal identifying
information from submissions. You should submit only information that
you wish to make available publicly. All submissions should refer to
File Number SR-BOX-2013-01 and should be submitted on or before March
29, 2013.

    For the Commission, by the Division of Trading and Markets,
pursuant to delegated authority.\117\
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    \117\ 17 CFR 200.30-3(a)(12).
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Kevin M. O'Neill,
Deputy Secretary.
[FR Doc. 2013-05413 Filed 3-7-13; 8:45 am]
BILLING CODE 8011-01-P