c0e205a4_d_Questions___Data___FINRA_org__Field_Name
[Description] The number of accounts with securities positions or credit balance records maintained for the correspondent or self-clearing firm at settlement as of the "processed date." [Questions & Responses] Does this include PAIB accounts that are not investment or trading accounts, such as clearing deposits, etc.? No. Does this include customer accounts with short positions? Or just long securities positions? Both. If an account has both a credit balance and a security position, is the account counted once or twice? Once. If a customer has a cash account and a margin account with securities positions. Is both the cash and margin account counted, or is the account counted just once? Customer accounts in the same account number series should only be counted once. What if the same customer has cash and margin accounts with different account numbers? Different account numbers are defined as different accounts and should be counted separately. Are guarantee / guarantor accounts included in this category? No. [Field Name] 
Number of Customer Accounts with a Securities Position and/or Credit Balance Record
Insite Frequently Asked Questions - Data | FINRA.org