Polymarket Daily Open Interest Rises About Fourfold to $466 Million

The prediction market platform’s open interest increased from about $106 million in March 2025 as new markets expanded sharply, surpassing 125,000 in February alone.

Summary

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Terms & Concepts
  • Open interest: The total value of active outstanding positions in a market that have not yet been closed or settled.
  • Prediction market: A marketplace where participants trade on the outcome of future events using market-based odds.
  • Polymarket: A crypto-based prediction market platform where users take positions on real-world event outcomes.