Polymarket Open Interest Climbs to $326 Million Peak in 2025 Data

Dune Analytics data shows Polymarket's open interest has risen to about $326 million in 2025, representing a 170% increase since the start of the year and marking a new annual high. Activity is concentrated in sports, politics, and crypto markets, while a previous $385 million peak in political open interest during the 2024 U.S. election underscores the platform's sensitivity to major events.