Polymarket, Kalshi cumulative trading volume surpasses $150B

The cumulative trading volume for prediction market platforms Polymarket and Kalshi surpassed $150 billion as of April, The Block reported. However, a seven-month streak of setting new monthly highs was broken last month. The number of active trading users on Polymarket fell from 733,000 in March to 643,000, contributing to the slowdown in trading volume. Meanwhile, Polymarket is expanding its business in the U.S. market, while Kalshi saw its trading volume increase from $13 billion in March to $14.28 billion in April.