Fannie Mae Updates Replacement Index for Some Single-Family COFI-Indexed ARMs

March 14, 2022

Fannie Mae has updated the replacement index for the population of COFI-indexed Single-Family ARMs transitioning to the Constant Maturity Index (CMT). Rather than transitioning to the one-year CMT Monthly Average index as previously announced, this population of Single-Family ARMs will instead transition to the Cumulative Average for the Previous 12 Month 1-Year Treasury Security (Monthly Average). The updated index description will be reflected in the Subtype Matrix available here on March 21; there will be no changes to the subtypes. The previously published list of active impacted securities has been updated to indicate which Single-Family ARM MBS will transition to the new index.

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This announcement does not constitute an offer to sell or the solicitation of an offer to buy securities of Fannie Mae. Nothing in this announcement constitutes advice on the merits of buying or selling a particular investment. Any investment decision as to any purchase of securities referred to herein must be made solely on the basis of information contained in Fannie Mae's applicable Prospectus and the Prospectus Supplement and the related legal documentation, and no reliance may be placed on the completeness or accuracy of the information contained in this announcement.

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