Variance rule

Definition:

Specifies the permitted minimum or maximum quantity of securities that can be delivered to satisfy a TBA trade. For Ginnie Mae, Fannie Mae, and Freddie Mac pass-through securities, the accepted variance is plus or minus 2.499999 % per million of the par value of the TBA quantity.

Investing Essentials


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

Term of the Day

FINEX

The Financial Futures and Options Division of the New York Cotton Exchange (NYCE), with a trading floor in Dublin, FINEX Europe, creating a 24-hour market in most FINEX contracts.

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