Kalshi notches $800 million in single-day volume ahead of $1B raise
Kalshi recorded $800 million in trading volume on Saturday, May 31, according to ClosingLine’s recurring sports betting and prediction market roundup. The figure arrives as The Financial Technology Report separately noted that Kalshi’s institutional trading volume jumped 800 percent ahead of a planned $1 billion capital raise. The Saturday volume was disclosed alongside coverage of other betting industry news, including Fertitta’s planned Caesars acquisition and new allegations in the Rozier case. Details beyond the $800 million figure and the 800 percent institutional increase were not available in the accessible portions of the reports.
The $800 million single-day print and 800 percent institutional jump give Kalshi live ammunition for its $1 billion Series F pitch. Any gap between daily highs and sustained monthly averages will be stress-tested by investors who just watched Polymarket's eight-month growth streak end.
Becomes the fourth major volume milestone Kalshi has crossed in under a week — hot on the heels of its first CFTC-regulated perpetual futures launch, a $17.3 billion May total that overtook Polymarket, and $8.8 million in single-day exotic contracts — as the platform races to convert trading velocity into a $1 billion Series F close.