Fitch Ratings’ proposed major revision of the ratings process for jumbo mortgage-backed securities “could pose obstacles” to the resumption of non-agency MBS issuance, according to the Mortgage Bankers Association. Under Fitch’s proposal, jumbo MBS ratings would be tied to home prices and potentially require...

Citing improved conditions for legacy non-agency mortgage-backed securities, the Federal Reserve this week auctioned off $1.33 billion in non-agency MBS acquired from American International Group. Information on the winning bids will be made public in three months but analysts suggest that...