Fannie Mae Updates SF and MF MBS Documents to Reflect LIBOR Replacement Indices

June 22, 2023

In preparation for LIBOR’s cessation on June 30, 2023, Fannie Mae is updating several of its Mortgage-Backed Securities (MBS) resource documents to reflect the replacement rates for legacy Single-Family and Multifamily LIBOR-indexed Adjustable-Rate Mortgage (ARM) MBS. As of June 26, any previous reference to LIBOR will reflect the corresponding replacement index name in the following documents. There are no changes being made to the prefix and subtype enumerations; rather, just the index names are being updated.

Additionally, Fannie Mae disclosure files will be updated to reflect the replacement indices for legacy LIBOR-indexed Single-Family and Multifamily Collateralized Mortgage Obligations (CMOs), beginning with the July 13th publication for the Single-Family Monthly Reset File, available in PoolTalk, and beginning with the July 21st publication for the Multifamily REMIC Ongoing Supplemental Files available in DUS Disclose.

Visit Fannie Mae's LIBOR Transition website, LIBOR Transition playbook and LIBOR Transition FAQs to learn more about the LIBOR transition, including the replacement indices for each legacy LIBOR-indexed product.

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