KalshiData: Kalshi's transaction volume reached $23.8 billion in 2025, a year-on-year increase of 1108%.

KalshiData stated on its X platform that Kalshi achieved record growth across all metrics in 2025. In terms of notional trading volume, the total for the year reached $23.8 billion, a year-on-year increase of 1108%, approximately 12.1 times. December saw a record monthly high of $6.38 billion, the fourth week of December set a new weekly record of $1.7 billion, and December 21st achieved a new daily record of $381.7 million. Regarding the number of trades, the total for the year reached 97 million, a year-on-year increase of 1680%, approximately 17.8 times. December saw 27.67 million trades, the fourth week of December saw 7.6 million, and December 21st saw 1.5 million, all record highs. In terms of open interest, the total reached $225 million, a year-on-year increase of 169%, approximately 2.7 times. March 9th saw a record daily high of $533 million, the first week of March set a weekly record of $530 million, and February saw a monthly record of $499.5 million. In terms of the number of contracts traded, the total for the year reached 23.8 billion, a year-on-year increase of 1108%, approximately 12.1 times. December, the fourth week of December, and December 21st set new monthly, weekly, and daily records, respectively, with 6.38 billion, 1.7 billion, and 382 million contracts traded.