Bonds closed at their best levels of the day. The 10-year Treasury finished at 4.639%, down 6.7 basis points, and rate sheets improved to 6.72% — the first decline after three consecutive days of increases.
The arc was a round trip. Bonds rallied out of the gate on an 8:30 AM Eastern Treasury announcement that doubled its buyback program for 10-to-30-year maturities from $2 billion to $4 billion, putting the 10-year at 4.648% by mid-morning. That gave back through the early afternoon — the 10-year drifted to 4.677% by 1:15 PM — then recovered through the last hour to close at the day's best levels. Net on the day: 6.7 basis points of improvement on the 10-year, and mortgage bonds finished stronger still, with UMBS 5.5 closing at 99.57, up 0.31, above where it traded at the morning high.
Two things about the move are worth separating. First, the buyback is a liquidity operation, not stimulus. The buying entity is the Treasury Department, not the Federal Reserve, and the program has been running since 2024 — this was a size change to an existing program. It moves yields by absorbing older, harder-to-trade securities from dealers, which is a plumbing effect, not a repricing of Fed policy expectations. The proof is in the curve: the 30-year led the rally, falling 9.8 basis points, while the 2-year actually rose 0.2. A genuine shift in rate-cut odds would show up at the front end first. Second, the 2:00 PM FOMC Minutes were a non-event for bonds. The session's weakest print came 40 minutes before the release, and the market improved after it.
The gap borrowers will notice is between the bond move and their own rate. The 10-year fell 6.7 basis points and the quoted rate improved about three, and the reason is timing rather than any dislocation between bonds and mortgages. Most of today's mortgage-bond gain arrived late — UMBS 5.5 was up only 0.09 at 1:15 PM Eastern and didn't recover to its highs until the final half hour. Lenders print sheets in the morning and reprice intraday only when a move is both large enough and early enough to justify it. A gain that lands in the last thirty minutes of trading isn't in sheets that were already published; where it shows up, if it holds overnight, is the following day's pricing. This morning's commentary flagged rate sheets possibly reaching 6.69–6.71% on the condition that the early gain held. It held and then some on the bond side, and sheets landed at 6.72%. Thursday brings weekly Jobless Claims at 8:30 AM Eastern, the only scheduled release before the PCE inflation report on August 26.
— David Burson, NetRate Mortgage