Trump has directed his “representatives” to purchase $200 billion in mortgage-backed securities (MBS), but exactly what that means for rates is up in the air.
That’s because details of the purchase are sparse beyond Trump’s post. But depending on the timing of the purchase — and whether Fannie Mae and Freddie Mac can even afford it — such a move could have an impact on the market.
Will Rates Go Down? It Depends on the Timing
We know that Trump has directed a $200 billion purchase of mortgage-backed securities. We know that Federal Housing Finance Agency (FHFA) Director Bill Pulte has said that Fannie Mae and Freddie Mac will execute the purchase.
We don’t know the timing of that purchase, and that will make a major difference in how it affects the market.
“Trump has fired a shot across the bond market with a stated $200 billion MBS buy. But the reality is execution, timing, legal limits, and actual demand - still has to happen,” Lower CEO Dan Snyder said.
“If they actually deliver on that scale, mortgage rates will come down sharply here and now. If they don’t, this will be another headline-driven blip, not a structural pivot for affordability.”
That’s because MBS prices and mortgage rates are directly related: When a big purchase pushes up MBS prices, yields fall, which drives down mortgage rates.
But whether homebuyers will actually get lower rates will depend on how fast the purchases occur.
Spring demand for mortgages usually picks up right after the Super Bowl. If the $200 billion in MBS purchases is going to make a difference for home sales in 2026, it’ll need to start in the next two months and with most of the buying to be done before kids go back to school in the fall.
The S&P Mortgage-Backed Securities Index is massive. Its market value currently sits at more than $8 trillion. In 2025, more than $1.8 trillion in MBS originated and sold, according to the Securities Industry and Financial Markets Association (SIFMA).
Given how much MBS are issued in any given year, a $200 billion purchase would need to occur quickly to have a material impact.
If Fannie Mae and Freddie Mac spend that $200 billion over six months at a pace of about $33 billion a month, that would have a marked impact on prices. If they instead spend that over two years, the impact on rates might be minimal.
“There’s a lot of attention right now on potential government action around mortgage-backed securities, but the reality is those are proposals, not guarantees," said Lower Chief Revenue Officer Jason Morrison.
"We don’t want consumers to put major life decisions on hold waiting for something that may or may not materialize. Today’s market already presents real opportunities for savings and financial flexibility, and the most important thing buyers and homeowners can do is evaluate what’s possible now. Waiting on headlines can often mean missing out on meaningful, life-changing decisions that are available in the present.”
How are markets reacting?
Despite the unknowns around timing, markets seem to have an optimistic response to the news.
A quick look at mortgage company stocks shows gains: Better, Rocket, Greystone, and PennyMac all saw day-over-day bumps in early trading. That could signal optimism for the housing market.
But so far, mortgage rates have been pretty much unchanged. The average daily rate for a 30-yr fixed rate mortgage on mortgagenewsdaily.com was 6.06% compared to 6.21% yesterday prior to the announcement.
So stock investors are bullish about the prospects while near-term mortgage-backed security investors are in wait-and-see mode. This is the third policy announcement by the president with unclear impact. First it was the 50-yr mortgage, then the ban on institutional buyers and now this directive for Fannie and Freddie to buy $200 billion in MBS.
It’s very clear the president wants to do something to make housing more affordable, but it’s not clear which of these policies will actually stick. Taking a wait-and-see approach for more cautious investors makes sense.
How this purchase stacks up to past efforts
Trump’s $200 billion effort is far from the first (or the largest) effort to buy MBS and provide market relief.
The Fed’s agency MBS purchase program bought $1.25 trillion in MBS in the wake of the Great Recession, throughout 2009 and early 2010.
The Fed also made major purchases in the wake of the COVID-19 pandemic in 2020, when it purchased roughly $700 billion of agency MBS in just two months. That purchasing kept up at a pace of $40 billion a month to keep the market smooth even during recovery.
Both of those efforts were also accompanied by other economic stimulus.
That means that no matter the speed of the 2026 effort, rates won’t change nearly as much as they did in the wake of the pandemic.
Can Fannie Mae and Freddie Mac Afford it?
Administration officials told Reuters that both Fannie Mae and Freddie Mac each have $100 billion in available funds to make that purchase happen.
But that’s not immediately obvious in their disclosures. Both of the government-sponsored enterprises have trillions in assets, but Fannie and Freddie had a combined $17 billion in cash or cash equivalents as of their third-quarter Securities and Exchange Commission (SEC) earnings reports.
Some activity might already be happening: Pulte told Barron’s that Fannie and Freddie are already in the market.
The Bottom Line
Trump’s $200 billion mortgage purchase could lead to falling rates, but only if it’s executed quickly.
While mortgage-backed securities showed initial investor optimism on Friday, many details of the plan are unclear — including whether Fannie and Freddie have enough liquidity to make such a purchase happen in the fast timeline needed to have an impact on rates.
“Potential policy changes make headlines, but they shouldn’t freeze consumers into inaction," Morrison said. "There are real opportunities available right now, and waiting for uncertainty to resolve can often mean missing out on meaningful savings.”
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