The 30-year closed at 6.74%, down 5 basis points and back at three-week lows, while MBS finished flat on the day — a quiet close to a session that had already done its selling in advance.

MND's daily 30-year index settled at 6.74%, five basis points below Tuesday and the lowest print in three weeks, even as UMBS 5.0 ended dead flat at 96-25 and the 10-year Treasury held near 4.69%. That gap tells the story: the bond market didn't move much today, but lenders passed through the improvement from earlier sessions into this afternoon's rate sheets. The as-expected CPI this morning drew no reaction because the market had front-run it — Tuesday's 40-plus basis point selloff priced in the downside risk, and a benign inflation number simply removed the reason to keep selling.

For borrowers, this is the good kind of boring. Rates drifted to their best levels in three weeks without any drama, and the flat MBS close means tomorrow's sheets should open near today's. The setup into the fall stays constructive: one tame CPI with inflation still above target doesn't force the Fed's hand, but it keeps a September move in the conversation. PPI lands Thursday morning — the next real test. An upside surprise there would unwind some of this week's calm; an in-line or soft print keeps the door to the mid-6s open. The window to lock sub-7% is still here, and today it opened a crack wider.

— David Burson, NetRate Mortgage