2026-09-18
Treasury Yields Retreat from Recent Highs as Mortgage Rates Hit New Weekly Peak
Treasury yields declined yesterday, but this moderation has yet to translate into lower primary mortgage rates, which reached their highest weekly average in the current cycle. The persistent elevation of the primary mortgage/Treasury spread underscores that broader fixed-income improvements are not fully benefiting mortgage borrowers.
Vabasso Rate Outlook
Today's Mortgage Market
National average 30-year fixed mortgage rates, as measured by the Freddie Mac PMMS, reached 6.95% this week, a significant increase of 19 basis points. The 15-year fixed rate also climbed to 6.26%, up 17 basis points. These weekly benchmarks reflect pricing as of September 17th. While Treasury yields saw a decline yesterday, the widening of the primary mortgage/Treasury spread to 201 bps highlights the ongoing disconnect between the broader bond market and retail mortgage pricing. Real-time mortgage rates today will reflect yesterday's Treasury market movements, but the underlying spread dynamics remain a critical factor.
MBS
Licensed current MBS pricing data is unavailable. Therefore, our analysis of MBS performance is limited to inferring direction from Treasury movements and the derived primary mortgage/Treasury spread. The substantial widening of the primary mortgage/Treasury spread to 201 bps, based on the weekly PMMS data, suggests ongoing headwinds for MBS valuations relative to Treasuries. While yesterday's Treasury rally implies some support for MBS prices, the general trend indicates a market where MBS are underperforming Treasuries, likely due to supply dynamics, rate volatility, and broader investor risk aversion. This contributes to elevated primary mortgage rates.
Treasuries
U.S. Treasury yields retreated yesterday, with the benchmark 10-year Treasury note falling 7 basis points to 4.94%. The 2-year Treasury also saw a 7 basis point decline, settling at 4.67%. Longer-dated maturities, such as the 30-year Treasury, were also lower, down 6 basis points to 5.29%. This broad-based decline across the curve comes after a period of significant upward pressure. The 2s10s spread remains inverted at 27 basis points. The yield movement reflects a potential easing of concerns that had driven rates higher, perhaps as the market digests recent central bank communication or technical factors lead to some mean reversion after the rapid ascent.
The Economy
There were no high-impact economic releases yesterday. The market continues to absorb recent data points and anticipates upcoming releases that will provide further clarity on the trajectory of inflation, employment, and overall economic growth. Crude oil prices showed a significant daily increase of $4.60, reaching $107.02, which could pose an inflationary risk if sustained. The economic calendar for the next two weeks is dense with high-impact releases, including Initial Jobless Claims, Durable Goods, JOLTS Job Openings, Personal Income & Outlays (PCE Inflation), GDP, and the Employment Situation report (Nonfarm Payrolls). These will be crucial for shaping market expectations regarding the Fed's future policy path.
What Matters Today
Today's calendar is light on high-impact economic data. Market participants will likely continue to digest yesterday's Treasury movements and assess the implications of the wider mortgage spreads observed in the weekly PMMS data. Attention will begin to shift towards next week's series of moderate-to-high impact data, particularly Initial Jobless Claims and Durable Goods, which could influence sentiment ahead of the high-impact PCE and Employment reports at month-end and early October. Any shifts in risk sentiment in broader markets could also impact Treasury performance.
What Mortgage Professionals Should Know
Mortgage professionals should recognize that while Treasury yields saw a modest pullback, primary mortgage rates remain near multi-year highs due to persistent widening of the mortgage/Treasury spread. Pipeline management requires vigilance given the elevated lock risk and the upcoming series of high-impact economic data releases which could introduce significant volatility. Focus on diligent hedging strategies and communicating realistic rate expectations to borrowers, as a sustained improvement in rates still requires a fundamental shift in both economic data and spread dynamics.