A bull market running into a price problem
Wall Street's fourth year of gains delivered on expectations, with the artificial intelligence infrastructure boom carrying the Dow Jones Industrial Average, the S&P 500 and the Nasdaq Composite to a series of all-time highs during 2026. Sustaining that advance becomes far harder when inflation refuses to cool, leaving Federal Reserve Chair Kevin Warsh and the Federal Open Market Committee with a difficult path back to price stability. The October inflation reading, as tracked by the Cleveland Fed, offers no relief to either the central bank or investors.[S1]
Nowcasting shows both gauges accelerating
The Federal Reserve Bank of Cleveland's Inflation Nowcasting tool publishes daily estimates for the current and following month, refreshed whenever relevant economic data land. Its Oct. 20 readings showed both key measures drifting the wrong way. Headline Consumer Price Index inflation had already reaccelerated to an annualized 3.7% in September, and the tool projected 3.77% for October, with sharply higher fuel costs tied to the continued closure of the Strait of Hormuz seen as the likely driver.[S1]
The core Personal Consumption Expenditures index, which strips out food and energy and is closely watched for underlying trends, is the bigger concern. After holding at 3% for three straight months, the nowcast pointed to 3.05% for September, due for release on the 30th, and 3.13% for October. That pattern implies the economy faces more than an energy supply shock: companies rerouting shipments and changing suppliers because of the Iran war are adding costs that are spreading through the wider economy.[S1]
Markets price in a tougher policy path
Headline inflation has now exceeded the Fed's 2% objective for 67 consecutive months. On Sept. 16, Warsh and eleven other committee members voted unanimously to lift the benchmark rate by a quarter point to a 3.75%-4.00% range. With both headline and core measures still climbing, the likelihood grows that officials will tighten several more times over the coming year.[S1]
Market pricing lines up with that view. The CME Group's FedWatch tool, which calculates odds from 30-day Fed Funds futures, assigned a 72% probability that the target range would be lifted by at least 75 basis points, reaching 4.50%-4.75%, by Sept. 15, 2027. The projections filed alongside September's summary of economic projections moved as well: just one participant now projects a longer-run rate under 3%, eleven put it higher than that, and six see it at precisely 3%. Over half of the seventeen contributors anticipate rates holding at or above 3.6% through 2029 so inflation can return to 2%.[S1]
For a market trading at historically rich valuations and powered by AI capital spending, costlier borrowing is a real threat. If financing gets more expensive and the infrastructure build-out slows even modestly, that alone could be enough to push a stretched stock market sharply lower.[S1][S2][S3]
