a16z Brief: Prediction Markets Set a Record for the Third Consecutive Week, Weekly Trading Volume Surpasses $14.4 Billion for the First Time
A16z Crypto's weekly report highlights record-breaking activity in prediction markets. For the third consecutive week, total weekly trading volume hit a new all-time high, surpassing $14.4 billion for the first time, a significant jump from the $5-6 billion range seen earlier this year.
Aggregate open interest also reached a new weekly record of $1.6 billion, marking its third straight week of growth. This metric, which reflects the total value of unsettled bets, has increased roughly 8-fold since last autumn, indicating sustained capital inflow.
While events like the World Cup drove initial interest, growth has expanded beyond sports. Non-sports categories—including politics, economics, and geopolitics—achieved a weekly volume of $3.6 billion across platforms like Kalshi and Polymarket. This figure now exceeds the entire prediction market's weekly volume (including sports) from last year. Since July 2025, non-sports trading volume has grown approximately 18-fold, with acceleration notably steepening recently.
marsbit06/30 09:32
