The contract has traded $4.7m since it opened, with $272k of liquidity still sitting behind the price.
The hit
Odds on the Fed leaving interest rates unchanged after its October 2026 meeting jumped 20 points in a single day on Polymarket, according to the platform’s own price data. The ‘no change’ contract moved from 30% to 50% on $603,000 of trades in 24 hours. Traders now see a hold as a coin toss.
Why it matters
A 20-point swing in a day on a rates contract is a large move for a market this size, signalling traders are repricing the odds of an October cut or hike fast. The shift came on real volume, not a thin trade, so it reflects a genuine change in positioning rather than noise.
The record
| Yes price 24 hours ago | 30% (Polymarket) |
|---|---|
| Yes price now | 50% (Polymarket) |
| 24-hour trading volume | $603,000 (Polymarket) |
| Total volume since market opened | $4.7m (Polymarket) |
| Market liquidity | $272,000 (Polymarket) |
| Market closes | 29 October 2026 |
What happens next
The market closes on 29 October 2026 & resolves against the upper bound of the federal funds rate set at the Fed’s October meeting, versus the level beforehand.
Sources: Polymarket: Will there be no change in Fed interest rates after the October 2026 meeting?
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