What The CPI Did

The August CPI print gives us a headline running 3.71% year over year against core at 2.76%. That 95 basis point gap between headline and core is the entire story right now. Core is the number the Fed watches for underlying trend, and 2.76% is the closest core CPI has run to the 2% target in this cycle. The problem is that headline reaccelerated to 3.71%, and the wedge between the two is energy and food doing work that core strips out.

The way I read stickiness: shelter and services-ex-housing are the sticky components, and they are what keeps core from collapsing toward 2%. Energy is the cyclical swing factor and it is what dragged headline back up. The pack does not give me the component-level m/m breakdown or the isolated shelter and services-ex-housing prints, so I am not going to fabricate a decimal I cannot source. What I can say structurally: when core decelerates while headline climbs, the disinflation is real but energy is masking it in the top-line number. That is a market that has to decide which print it believes.

Where The Market Disagrees

The bond market is reading the core number, not the headline. The 10-year closed at 4.83% on 2026-09-09, up 4 basis points week over week. The 2-year sat at 4.43% on the same confirmed close, leaving the 2s10s slope at positive 40 basis points. A 4 basis point move on the 10s after a CPI week is a shrug, not a reaction. That tells me the market had already priced the core deceleration and did not get spooked by the 3.71% headline.

Fed funds sits at 3.50% to 3.75% upper bound. Core PCE, the Fed's actual mandate variable, is still 3.34% as of the July print, meaningfully above core CPI at 2.76%. That divergence is the real tension. If you are handicapping cut probability off core CPI alone you get one answer. If you weight core PCE at 3.34%, the case for imminent cuts is weaker. I am not going to put a false probability figure on the next cut because the pack does not carry a dated futures-implied number. What the curve at positive 40 and a 4 basis point 10-year move tells me is that the market is not pricing a policy surprise.

Why USDJPY Matters

USDJPY printed 156.11 on 2026-09-04. When dollar-yen sits north of 156, the carry trade is stretched and any BOJ move or risk-off flush can force yen repatriation that sells Treasurys. That is a tail on the 10-year that has nothing to do with our CPI. With VIX at 17.84 and high-yield OAS at 270 basis points, credit and vol are calm right now, so the carry unwind is not the active risk this week. It is the thing that turns a benign CPI into a rate spike if funding stress hits.

Mortgage Rate Translation

Freddie PMMS printed 6.76% on 2026-09-10, up from 6.71% the prior week and 6.65% four weeks ago. So the primary rate has drifted 11 basis points higher over four weeks even as core CPI cooled. That is the MBS spread and the 10-year doing the driving, not inflation. The takeaway for anyone waiting on a CPI-driven rate drop: it did not show up. The 10-year at 4.83% is the anchor, and until it breaks meaningfully below 4.75, the 30-year fixed is stuck in the high 6s.

Housing Data Check

Existing home sales ran 3.98 million annualized in August. Starts were 1.239 million in July, down 13.5% year over year. That is a supply story tightening into weak demand. Builders pulling back 13.5% on starts while resale volume sits under 4 million tells you the affordability lock is still governing the whole market. Lower rates are the only unlock and they are not here.

What I'd Actually Do This Week

HELOC borrowers. Your rate is tied to the short end. With fed funds at 3.50% to 3.75% and core PCE still 3.34%, do not model aggressive near-term cuts into your carrying cost. Pay down principal on the variable line where you can.

DSCR investors. The 10-year at 4.83% sets your financing floor. Underwrite deals at today's 6.76% equivalent plus your investor spread, not a rate you hope arrives. Positive 40 curve means the front-end relief is not funding a cheaper 30-year yet.

Sub-4% first mortgage holders: Nothing here changes the math. Keep the mortgage, do not touch the first. If you need cash, price a second or a HELOC against it rather than surrender the low coupon.

Sideline buyers. 6.76% and 3.98 million existing sales means less competition. If the payment works at 6.76%, buy the house and refinance the rate later. Do not wait for a CPI print to hand you a rate.

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*Research and education only, not personalized advice, not a rate lock commitment. NMLS #2636410. West Capital Lending, Inc. NMLS #1566096. Equal Housing Opportunity. For a binding rate quote, contact your loan officer.*