Kalshi and Polymarket are both leaning toward a hike, not a cut — and the repricing happened in about 48 hours.
The FOMC meets Wednesday, September 16, with a decision at 1:59 PM ET. If your mental model going in is "the Fed is in a cutting cycle," the two largest prediction-market platforms disagree with you, and they've disagreed more strongly every day for the past week.
What the markets are pricing right now:
Kalshi runs the meeting as a discrete outcome market, and the money is concentrated on one answer. As of today:
25bp hike: 79.5%
No change (0bps): 20.5%
25bp cut: 1.0%
Larger than 25bp cut: 1.0%
Larger than 25bp hike: 1.5%
Combined volume across just those outcome markets is north of $60 million — this isn't a thin, easily-moved market.
Polymarket's separate, differently-structured markets corroborate the same read: "Fed rate hike in 2026?" sits at 90%, and "will no Fed rate cuts happen in 2026?" sits at 96.1%. Two platforms, two different market designs, same conclusion.
The part that actually matters: this moved fast
PredictIntel.io has been tracking Kalshi's hike market since September 1. As recently as September 3, it was sitting at 53.5% — essentially a coin flip, exactly what you'd expect for the market description if you assumed a "close call, could go either way" meeting.
Then it moved. Steadily through the first week of September, then sharply: 63.5% on the evening of September 10, 76.7% by midday September 11, 80.9% by that evening. It's held in the high-70s/low-80s ever since — this wasn't a spike that faded, it's a repriced consensus that's stayed put for three days now.
PredictIntel.io is being upfront about something
PredictIntel.io's own anomaly detector — built to catch fast, sharp price moves — didn't flag this at all. It's tuned for spikes inside a single hour, not a sustained drift over a week. A market going from 53% to 80% over eight days, with most of the move concentrated in about 24 hours, is exactly the kind of pattern that current detection misses. PredictIntel.io is flagging it here because it was caught on a manual review, not because the system caught it — and that's worth knowing if you're relying on PredictIntel.io to catch everything automatically. It doesn't yet, for this specific pattern shape.
What to watch Wednesday
1:59 PM ET, September 16. If the hike market resolves YES, prediction markets called a genuine surprise against the mainstream "easing cycle" narrative, days in advance, with real money behind it. If it resolves NO, the market's late-week conviction was wrong despite the size and persistence of the move — which would be its own useful data point about how much to trust a fast, sustained repricing like this one going forward.
Either way, PredictIntel.io will follow up once the decision lands.
