Kalshi Hits $15.66B as Combination Bets Lift Weekly Trading
Prediction market volume reached $19.46 billion for the week as Polymarket US grew 21%, driven largely by combination contracts while Kalshi held 80.5%. The post Kalshi Hits $15.66B as Combination Bets Lift Weekly Trading appeared first on ReadWrite .
Kalshi, Polymarket US, and Polymarket International combined for an approximate $19.46 billion in trading volume from September 21-27, a 3.9% increase from $18.72 billion the previous week according to DeFi Rate analysis. Polymarket US contributed the most to this growth, increasing its share from 12.5% to 14.6%. Kalshi outdid itself with a record $15.66 billion in volume, accounting for 80.5% of the total.
Most of the growth on Polymarket US came from combination bets, which rose 44.4% from $1.06 billion to $1.53 billion and became 54.1% of the platform's volume. Football dominated the leaderboard, but combination contracts accounted for 95.9% of the platform's week-over-week increase, with the remaining 4.4% coming from other markets.
Bitcoin markets saw a significant drop from $453,000 to $50.7 million, almost entirely due to 15-minute and hourly contracts. Polymarket US now accounts for over 95% of volume across the three platforms DeFi Rate tracks, with Polymarket US responsible for roughly two-thirds of the week's net increase.
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