Difference. The difference between the purchase and sale price of a stock; also, the amount of
profit or loss on a transaction.  Speculating for differences means that persons buy securities with
the intention of later selling them or sell securities short with the intention of later buying them—
the sole purpose being to profit by differences between buying and selling or between selling and
buying prices.Also see Market difference.  At a clearing house for banks only differences (or
balances) are settled. For information see Clearing house of the associated banks of New York.