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 Qinwen Zheng wins the 2026 WTA Miami Open professional tennis tournament, then the market resolves to Yes.
As of March 18, 2026, the Kalshi odds for Will Mirra Andreeva win the WTA Miami Open? are: Aryna Sabalenka: 29%, Elena Rybakina: 19%, Iga Swiatek: 17%, Jessica Pegula: 13%, Victoria Mboko: 10%. These probabilities are derived from real-money trading and update in real time.
Will Mirra Andreeva win the WTA Miami Open? 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.
