The 10-year Treasury yield jumped 15 basis points to 5.11% on Sept. 23, the sharpest single-session move in this reading, while the 2-year yield rose 14 basis points to 4.85%.

Two note auctions fell inside this reading's two-day window: Treasury's official schedule lists a 2-year note sold Tuesday, Sept. 22, and a 5-year note alongside a 2-year floating-rate note reopening sold Wednesday, Sept. 23 -- the same sessions covered by the yield figures below. Separately, the Federal Reserve's own meeting calendar shows the Committee's most recent policy decision came Sept. 15-16, six days before this window opened, with the next meeting not scheduled until Oct. 27-28. Neither calendar entry is treated here as an explanation for the size of this week's yield changes -- only the overlap in timing is confirmed.

Federal Reserve H.15 data put the 10-year Treasury yield at 5.11% on Sept. 23, 2026, up 15 basis points from 4.96% the day before, and the 2-year yield at 4.85%, up 14 basis points from 4.71%. Both readings are dated Sept. 23, matching this brief's series date.

Freddie Mac's Primary Mortgage Market Survey, released Thursday, Sept. 24, 2026 -- one day after this page's Sept. 23 Treasury date -- put the average 30-year fixed mortgage rate at 7.03%, up 8 basis points from 6.95% in the week ended Sept. 17, and the average 15-year fixed rate at 6.42%, up 16 basis points from 6.26%. Actual rates offered to any borrower still vary by credit profile, loan term and lender.

The 30-year mortgage rate's premium over the 10-year Treasury yield -- a gauge of how much extra homebuyers pay above the government's long-term borrowing cost -- narrowed by 7 basis points to 1.92 percentage points this week. The gap between the 10-year and 2-year Treasury yields, a common read on the yield curve's slope, widened by 1 basis point to 0.26 percentage points. Both changes are the arithmetic result of the rate and yield moves already described here; this page does not attribute either shift to a specific cause.

What to watch next: Freddie Mac is scheduled to publish its next weekly mortgage survey on Thursday, Oct. 1, 2026, the Federal Reserve typically posts an updated H.15 release each business day, and the FOMC's calendar lists its next meeting for Oct. 27-28, 2026.