​​Prediction Market OI hits a new ATH of $1.55B

Prediction market open interest reached a record $1.55B, up from $1.18B in total OI a month ago. Kalshi drove most of the move, nearly doubling from $642M to $1.05B, while Polymarket held near $469M.

With 3.76M unique users and $31.9B in 30D notional volume, capital is staying deployed longer as the sector matures.

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