Traders on the prediction market Polymarket are pricing a 63% probability that the Federal Reserve will leave interest rates unchanged at its September 15-16 policy meeting, according to the market's published odds.
The bet comes three weeks before the scheduled FOMC decision. Polymarket aggregates real-money wagers from thousands of traders; the platform's pricing has historically aligned closely with federal funds futures markets, which form the basis for institutional rate expectations.
Fed futures contracts currently price in a similar range. The CME FedWatch Tool, which derives probabilities from Treasury derivatives, shows roughly 60% odds of a hold in September, with the remainder split between a 25-basis-point cut and a 50-basis-point cut. Polymarket's 63% hold probability sits within that consensus.
The Fed's preferred measure of core inflation stood at 2.7% in June, above its 2% target. Non-farm payroll growth slowed in July but remained positive at 159,000 jobs added.
Fed Chair Jerome Powell stated at the Jackson Hole Economic Symposium on August 23 that the Fed is "not far from the point where it will be appropriate to adjust policy," without committing to a September move.
Polymarket has grown into a significant venue for policy-contingent bets, with total value locked in election and economic event contracts reaching into the hundreds of millions. The platform's pricing often comes from traders with expertise in the markets being wagered on, though it remains smaller and less liquid than government futures contracts.
If the Fed votes to hold rates steady in September, the 63% bet would resolve to the holders of that position. If the Fed cuts by either 25 or 50 basis points, or raises rates, traders on the hold position would lose their stake. The market's next repricing will likely follow the August 30 PCE inflation report and September employment data.
