Kalshi Takes 92.1% Share as Weekly Contract Volume Hits $14.1B
Prediction market volume reached $14.1 billion as NFL trading helped Kalshi widen its lead and Polymarket Global posted gains in sports activity. The post Kalshi Takes 92.1% Share as Weekly Contract Volume Hits $14.1B appeared first on ReadWrite .
Kalshi and Polymarket Global reported a combined $14.10 billion in contract volume during the week of September 7-13, marking a 9.3% increase from the previous week's $12.90 billion. The surge in activity was driven by football, US Open tennis, esports playoffs, and Federal Reserve positioning. Kalshi experienced a 10.7% rise in total trades, reaching 86.50 million, and generated $12.98 billion in the combined volume, capturing a record 92.1% share.
Polymarket Global saw a 7.6% increase, amounting to $1.11 billion, or 7.9% of the total. The two platforms collectively handled $3.76 billion in sports contracts, with Kalshi accounting for $3.265 billion and Polymarket Global experiencing a 104.7% increase to $498.81 million. Kalshi's New England-Seattle market generated $57.86 million, while other high-volume NFL markets included San Francisco-Los Angeles at $45.30 million and Washington-Philadelphia at $28.48 million.
Kalshi's September month-to-date volume stood at $23.45 billion, a 53.4% increase compared to the same period in August. Polymarket Global's Fed Decision market generated $48.85 million, up 48.8% from the previous week. Sports contracts dominated the activity, with Kalshi holding 99.4% of the combined $1.95 billion combo market.
Open interest reached 677.18 million contracts on Kalshi and 321.34 million on Polymarket Global. The report highlights the platform's broad reach across sports, economic, and esports markets, with Polymarket Global gaining traction in sports trading and Federal Reserve activity anticipation.
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