MBS holdings in the retained mortgage portfolios of the GSEs doubled between June 2025 and the end of the year. And that’s before President Trump directed them to buy $200 billion of MBS. (Includes data table.)

Republicans are poised to introduce a bill that would codify reforms of the GSEs that have been completed administratively. The bill would also establish a utility model framework for Fannie Mae and Freddie Mac and alter how calculations are made to annual changes in loan limits.

Fannie Mae and Freddie Mac appear to be using aggressive pricing at the cash window to boost whole loan purchases, then retaining the most attractive coupons.