US Patent 7797224 Systems and methods for automatically backing out by orders

A system and method for identifying a candidate set of one or more buy orders associated with an investment account, ordering the buy orders in the candidate set into a chain, determining a back out target value that identifies a fiscal amount by which the candidate set must be reduced, and decrementing an initial asset quantity of one or more successive non-zero quantity buy orders in the chain by a fixed integer quantity to a final asset quantity until the back out target value is achieved. The candidate set of buy orders can then be modified by replacing the respective initial asset quantity with the respective final asset quantity for at least one of the one or more buy orders. The modified candidate set of buy orders can then be provided for trade execution.