BlockBeats report: On May 2, the cumulative trading volume of the prediction market platforms Polymarket and Kalshi surpassed $150 billion in April, ending a seven-month streak of monthly growth. Data shows that Polymarket’s active trading users declined from 733,000 in March to approximately 643,000, contributing to the overall market volume decrease. However, its U.S. business continues to grow, and Kalshi’s performance remains on an upward trajectory.
Polymarket and Kalshi combined trading volume exceeds $15 billion in April
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In April 2026, the combined trading volume of Polymarket and Kalshi reached $15 billion, ending a seven-month growth streak. Polymarket’s active traders declined to 643,000 from 733,000 in March, impacting overall transaction volume. U.S. operations on both Polymarket and Kalshi still posted gains.
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