Biggest price moves across Kalshi and Polymarket
The Kalshi and Polymarket contracts whose implied probability moved the most since we started recording each one. Sorted by absolute price change. A large mover is a signal that new information, or a liquidity gap, has repriced the market.
Biggest price changes across the book
How the move is calculated
Each row on this page is a live contract with at least two prices in our archive. The move column is the latest price minus the first price we recorded for that contract, in percentage points.
A move of +30pp means the implied probability rose 30 points over the window we have tracked. A large move can mean new information reached the market. It can also mean a thin market where one order shifted the price, so check the volume column before reading much into it.
This page is not trading advice. Treat the move column as a starting point for your own research, not a recommendation.
Data sources
- Market prices: the public Kalshi and Polymarket APIs.
- Price history: our own archive of each refresh, which is why newer contracts have shorter windows.
- Refresh: several times a day.
For weather contracts, see how the market's favorite compares with the National Weather Service forecast on market vs meteorologist.