According to Artemis data, prediction markets recorded this week a cumulative weekly trading volume of $20.4 billion, a first time, as the weekly volume crossed the $20 billion threshold. Kalshi led with $15.8 billion, or 77% of the total volume, followed by Polymarket with $3.6 billion. This record surge reflects the convergence of several catalysts: the start of the NFL and college football season, short-term activity on crypto markets amid changes in the price of Bitcoin and Ether, and the first positioning ahead of the midterm elections on November 3. The previous week had recorded $19.8 billion, marking two consecutive weeks above the previous peak set during the FIFA World Cup in June and July 2026.
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