Fannie Mae Releases December Activity Summary

On Friday, Fannie Mae released its monthly activity summary for December 2025, outlining monthly and year-to-date performance across its gross mortgage portfolio, mortgage-backed securities and other guarantees, interest rate risk measures, and serious delinquency rates.

Fannie Mae reported that its guaranty book of business increased at a compound annualized rate of 1.1% in December.

The conventional single-family serious delinquency rate increased 1 basis point to 0.58% in December, while the multifamily serious delinquency rate declined 1 basis point to 0.74%.

As of December 31, Fannie Mae said its maximum exposure to Freddie Mac collateral included in outstanding Fannie Mae re-securitizations totaled $184.3 billion.