21 October 2025

Polymarket and Kalshi surpassed $2B in notional trading volume in the week ending Oct. 19, exceeding the previous peak during the 2024 US presidential election (Emily Nicolle/Bloomberg)

Emily Nicolle / Bloomberg:
Polymarket and Kalshi surpassed $2B in notional trading volume in the week ending Oct. 19, exceeding the previous peak during the 2024 US presidential election  —  The trading volume on the leading prediction markets platforms, Polymarket and Kalshi, has hit a new record high …

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