Kalshi and Polymarket both recorded record trading volumes of $5.8 billion and $3.74 billion in November, respectively.

The prediction market Kalshi saw a record high trading volume of $5.8 billion in November, a 32% increase from October. Additionally, the prediction market Polymarket also saw a record high trading volume in November, reaching $3.74 billion, a 23.8% increase month-over-month.