Underlying security

Definition:

For options, the security that is subject to purchase or sold upon exercise of an option contract. For example, IBM stock is the underlying security for IBM options. For Depository receipts, the class, series, and number of the foreign shares represented by the depository receipt.

Investing Essentials


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

Term of the Day

Effective margin (EM)

Used with SAT performance measures, the amount equal to the net earned spread, or margin of income, on assets in excess of financing costs for a given interest rate and prepayment rate scenario.

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