Kevin Warsh has delivered the Federal Reserve's first interest rate increase since 2023, and markets immediately began pricing in a string of follow-up moves. The new chair, for his part, appears content to let investors keep guessing.

The Federal Reserve announced a 25 basis point increase on September 16, lifting the federal funds target range to 3.75%-4%. The decision was unanimous across the FOMC. Still, unanimity on one hike does not amount to unanimity on a hiking cycle—a distinction that carries enormous weight for anyone holding risk assets right now.

One Hike Does Not a Cycle Make

The more instructive historical parallel is Alan Greenspan's 1997 playbook. That March, the Fed delivered a solitary 25 basis point increase—then stopped. No follow-up, no escalation. Just one surgical move to address a specific inflationary concern, followed by patience. The episode remains a standing counterexample to the assumption that a first increase must mechanically become the first of many.

Warsh appears to be studying from that same textbook. During his August 28 speech at Jackson Hole, he emphasized that inflation progress had been insufficient, setting the stage for September's move while carefully avoiding any promise beyond it.

His post-decision commentary rejected the kind of heavy forward guidance that defined the Jerome Powell era. Forward guidance—the practice of signaling the likely path of policy well in advance—became a fixture of Fed communication under his predecessor, and stepping back from it shifts the market's signposts back to the incoming data itself. Warsh stressed data dependence and the primacy of price stability—a combination that gives him maximum flexibility to do nothing at the next meeting if conditions warrant it.

The Inflation Picture Is Real but Complicated

The case for hiking was not manufactured. Core PCE inflation hit 3.3% in July 2026, well above the Fed's 2% target and stubbornly resistant to the tightening that preceded Warsh's tenure. Core PCE strips out volatile food and energy prices by design, so a reading that far above target points to broad-based pressure rather than a temporary spike. Rising energy prices, amplified by geopolitical tensions, have added fuel to an already warm inflation backdrop.

Warsh was confirmed as Fed Chair on May 13, 2026, in a 54-45 Senate vote that reflected the political friction surrounding his appointment. He inherited an economy in which inflation had proven stickier than models predicted, labor markets remained tight, and prior rate cuts had arguably been premature. Tight labor matters beyond the inflation story, too: the Fed's statutory mandate pairs price stability with maximum employment, making employment conditions a formal input into the committee's calculus.

Twelve of the FOMC's 18 members project that an additional 25 basis point increase could happen before year-end. That is a meaningful majority, but projections are not commitments. The dot plot is a snapshot of individual opinions at a moment in time, not a binding contract with markets. And with the Fed typically convening eight times a year, several scheduled meetings remain before year-end for incoming data to reinforce or erode that majority view.

What This Means for Markets

For interest rate-sensitive assets, the September hike creates an immediate recalculation. Borrowing costs tick higher, and discount rates on future cash flows increase—these are the main channels through which a move in the federal funds rate reaches the broader economy. The sectors that benefited most from the low-rate environment of 2024 and early 2025—particularly real estate and growth-heavy tech—face renewed pressure.

After the 1997 solo hike, markets initially struggled with the ambiguity. But once it became clear that the Fed was capable of making a calibrated, one-off adjustment without triggering a full cycle, risk assets found their footing. The S&P 500 went on to have a very good 1997. That episode is context, not a forecast: which path 2026 follows depends on the data Warsh has promised to follow.