Dune data: Prediction markets logged $25.7B in March, led by Polymarket and Kalshi

Prediction markets posted $25.7 billion in notional volume in March, with most activity concentrated on Polymarket and Kalshi. March also saw about 207 million transactions, led by Polymarket's 115 million and Kalshi's 88 million, while combined open interest stood near $939.86 million at the time of writing.