Super Finance Glossary

Finance

Over 10,000 financial glossary terms...

Browse by Letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Or Enter Search Term: By Author:
 Search Tips

Variance Rule

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.