Polymarket$3.30BOIOpen interest: sum of pool liquidity across all active markets, reported by the Polymarket API.
Kalshi$381.46MOIOpen interest: total contracts outstanding across all active markets, reported by the Kalshi API.
Limitless$27.64MOIOpen interest: estimated from total volume traded (USDC). Limitless does not report a separate OI metric.
Updated Today
If the number of teams achieving an upset (based on seeding) in the Round of 32 of the men's college basketball tournament is at least 9, then the market resolves to Yes.
Winner: 2+ upsetson Mar 30, 2026
As of March 18, 2026, the Kalshi odds for Will there be at least 1 upset in the Round of 32? are: 2+ upsets: 96%, 1+ upsets: 92%, 3+ upsets: 87%, 4+ upsets: 67%, 5+ upsets: 46%. These probabilities are derived from real-money trading and update in real time.
Will there be at least 1 upset in the Round of 32? is currently available on Kalshi. Check PredictMarketCap for cross-platform availability as new markets are added regularly.
Prediction market odds reflect the aggregate opinion of traders who risk real money on outcomes. The price of a share (e.g., 65¢) represents the market's implied probability (65%). Prices move as traders buy and sell based on new information, polls, and analysis.
