The Accumulation/Distribution Line is a stock trading technical
indicator which displays the flow of volume into or out of a
stock, and is used to help make stock buying and selling
decisions. (The interpretation of the indicator is similar to
the interpretation of On Balance Volume.)  Another use of the
Accumulation/Distribution Line is explained in the description
of the Chaikin Oscillator.  The indicator is calculated:  Ii =
Ii-1 + Vi * ((Ci - Li) * (Hi - Ci) / (Hi - Li))  Where Ii is the
stocks's Accumulation/Distribution Line for the period i, Hi is
the stocks's high price, Li is the low, Ci is the close, and Vi
is the volume. Ii-1 is the previous period's
Accumulation/Distribution Line value.  There are two ways to
interpret this indicator:  1) Assume that stock price peaks are
preceeded by increase in the indicator and that the latter
stages of a stock price bottom are generally accompanied by a
decrease in the indicator.  2) Assumes that an increase in the
indicator over a relatively short time period