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Account Executive - The agent of a commission house who serves customers

Ask -  The same as offer. Indicates a willingness to sell a futures contract at a given price. (See Bid.)

Accrued Interest - Interest earned between the most recent interest payment and the present date but not yet paid to the lender.

Adjusted Futures Price - The cash-price equivalent reflected in the current futures price. This is calculated by taking the futures price times the conversion factor for the particular financial instrument (e.g., bond or note) being delivered.

Arbitrage - The simultaneous purchase of cash, futures, or options in one market against the sale of cash, futures or options in a different market in order to profit from a price disparity.

Arbitration - The procedure of settling disputes between members, or between members and customers.

Assignment - To make an option seller perform his obligation to assume a short futures position (as a seller of a call option) or a long futures position (as a seller of a put option).

Associated Person (AP) - An individual who solicits orders, customers, or customer funds (or who supervises persons performing such duties) on behalf of a Futures Commission Merchant, an Introducing Broker, a Commodity Trading Advisor, or a Commodity Pool Operator.

At-the-Money Option - A term that describes an option with a strike price that is equal to the current market price of the underlying stock or futures