Security deposit (initial)


Synonymous with the term margin. A cash amount that must be deposited with the broker for each contract as a guarantee of fulfillment of the futures contract. It is not considered as part payment or purchase. Related: Margin.

Investing Essentials

Copyright © 2011 Campbell R. Harvey, Professor of Finance, Fuqua School of Business at Duke University

Term of the Day

Fast market

Excessively rapid trading in a specific security that causes a delay in the electronic updating of its last sale and market conditions, particularly in options.

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