Aggressive MBS purchases met questions over how much relief they can really deliver
Fannie Mae and Freddie Mac are stepping more forcefully into the mortgage‑backed securities market after president Donald Trump ordered them to buy $200 billion of bonds in a bid to cool borrowing costs, according to people familiar with the trades.
The government‑controlled giants are placing large bids for agency mortgage‑backed securities in recent weeks, using retained cash to absorb part of a market hit by wider spreads, war‑driven oil shocks and resurgent rate volatility, Bloomberg first reported.
The move followed Trump’s January directive to buy up $200 billion in mortgage bonds to help drive down rates, a push that briefly helped pull 30‑year averages into the high‑5% range before they rebounded.
Limited firepower in a $10 trillion market
Analysts warned that even a headline‑grabbing sum risks being overwhelmed by the scale of the mortgage market and broader macro forces.
Commercial banks alone hold roughly $3 trillion of MBS, while the Federal Reserve still carries more than $2 trillion on its balance sheet, according to Fed and Urban Institute tallies.
“It’s difficult to see this proposal moving mortgage rates in a large or lasting way,” Realtor.com senior economist Joel Berner said when the plan was announced.
“A one‑time infusion of roughly $200 billion, or even a series of smaller purchases that add up to that figure, is unlikely to meaningfully alter long‑term mortgage pricing.”
Morgan Stanley research reached a similar conclusion, and traders noted that spreads have been driven as much by interest‑rate volatility and the US‑Iran conflict as by technical supply‑demand shifts.
Recent Freddie Mac surveys showed the 30‑year fixed averaging 6.11% on March 12 and 6.22% on March 19, still below year‑earlier levels but up from the brief sub‑6% window that ignited a mini‑refi and purchase surge.
What it meant for pipelines and affordability
For originators, the intervention underscores how quickly conditions swing.
“We started to see momentum build late last week as rates dipped and headlines around potential mortgage bond purchases hit the market,” Kristin O’Neil of Open Door Lending told Mortgage Professional America earlier this year.
“Even small moves toward the high‑5% range tend to bring sidelined borrowers back into the conversation.”
Eric Hagen of BTIG pointed out that “mortgage spreads in the secondary market have tightened about 50 basis points in the better part of three or four months since the end of the summer, including 20 basis points” on the day Trump’s bond‑buying plan first hit, helping rates briefly fall into the 5s.
Still, with Mortgage Bankers Association (MBA) data showing rates hovering around 6% to the low‑6s and the Fed continuing to shrink its own MBS holdings, most housing economists view the Fannie‑Freddie buying as a cushion rather than a cure.
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