The top four bank investors in residential MBS reported a combined $16.5 billion decline in their portfolios during the fourth quarter, with most of the drop coming in GSE pass-throughs. (Includes two data tables.)

Pending proposals from the Fed would impact MBS market; Moody’s looks to rate securitizations of home equity loans.

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.