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Letter of Guarantee

Definition:

A letter from a bank to a brokerage firm which states that a customer (who has written a call option) does indeed own the underlying stock and the bank will guarantee delivery if the call is assigned. Thus the call can be considered covered. Not all brokerage firms accept letters of guarantee. Also: letter issued to Option Clearing Corporation by member firms covering a guarantee of any trades made by one of its customers, (a trader or broker on the exchange floor).

Investing Essentials


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

Term of the Day

Revenue Anticipation Note (RAN)

A short-term municipal debt issue that will be repaid with anticipated revenues, such as sales taxes, from the project.

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