Fed October 2026 Odds on Polymarket: After September's Hike

The FOMC voted 12-0 on September 16, 2026 to raise the federal funds rate 25 basis points to 3.75%-4.00% - the first hike since July 2023, and exactly what Polymarket's "Fed Decision in September?" market had priced at 87.5c the morning before (covered on this blog as decision day approached). That contract resolved 100c/0c within the hour. The market that actually moved sits one meeting further out: "Fed Decision in October?" swung hard during Chair Warsh's press conference and settled a near coin flip, "no change" at 52.5c and "25 bps increase" at 45.5c. Numbers below are from Gamma and the CLOB, fetched 2026-09-17 11:55 UTC.

A unanimous hike, and a hawkish press conference

All twelve voting members backed the quarter-point increase, taking the target range to 3.75%-4.00%. Chair Kevin Warsh said the move "will support a timelier return to the committee's 2 percent goal," and called inflation "too high" and "for too long" above target. The quarterly Summary of Economic Projections released alongside the decision showed the committee split on how much further to go this year: of 18 participants, 2 projected the funds rate staying at 3.75%-4.00% through December (no more hikes), 12 projected 4.00%-4.25% (one more quarter-point move), and 4 projected 4.25%-4.50% (two more), for a median year-end projection of 4.1%. Two meetings remain in 2026 - October 27-28 and December 8-9 - to deliver whatever the dot plot implies.

On Polymarket, the September contract's resolution was almost a formality: Gamma's rules let it "resolve as soon as the FOMC's statement... with relevant data is issued," and the event's closed flag flipped true and every outcome price froze to ["1","0"] or ["0","1"] by 21:40 UTC, 21 minutes after Warsh's press conference wrapped. An 87.5c favorite paid off at 100c - the least interesting kind of resolution, because nothing about it was a surprise.

October didn't move on the statement. It moved on the tone.

The 2pm ET statement itself (18:00 UTC) barely registered - "no change" was already sitting near 63.5c, and a hike everyone expected doesn't reprice the meeting after next. The real move started forty minutes later, once Warsh's 2:30pm ET press conference was underway: between 18:40 and 19:30 UTC, "no change" fell from 60c to a 49.5c low while "25 bps increase" climbed from 38.5c to a 50.5c high, both markets briefly crossing through a genuine coin flip before settling back to a 52.5c/45.5c split by the evening. The lesson carries beyond this one meeting: a well-anticipated decision can be fully priced and still leave the next contract wide open, because the press conference is where a chair signals pace, not just direction - and that's the part a transcript still beats an order book at reading in real time.

Two meetings left, and the market is split on the first one

FED DECISION, OCTOBER         YES    24H
No change                     52.5c  -11pt
Increase 25 bps                45.5c  +10pt
Decrease 25 bps                 1.0c  -1.5pt
Increase 50+ bps                0.8c  flat
Decrease 50+ bps                0.4c  flat

Both live legs are 1c-wide books: "no change" has 45,182 shares bid at 52c against 20,801 offered at 53c, while "25 bps increase" has 55,650 bid at 45c against 25,362 offered at 46c - real size on both sides of a genuine toss-up, not a thin book drifting on noise. The event has traded $3.0M over the past 24 hours against $1.45M of resting liquidity, and this is only the first of the two remaining 2026 meetings the dot plot's 12-of-18 "one more hike" camp needs to land on - if October holds, the market's implicit bar for December gets a lot higher, and if October hikes, the "two more" camp's 4 votes start looking prescient. Neither reading is settled: six weeks of data, including one more jobs report and one more CPI print, sit between now and the October 27-28 meeting, plenty of room for this 52.5c/45.5c split to move the way September's did. polymarket-tui keeps this market's five-bracket ladder and its price chart on one screen, so a press conference that moves "no change" ten points in twenty minutes shows up as it happens rather than after the fact.

$ uv tool install polymarket-tui
$ polymarket-tui

No account is needed to browse markets, books, and charts. The install page has Homebrew and one-liner options.