In November, Kalshi and Polymarket's combined transaction volume approached $10 billion.

According to Odaily Planet Daily, prediction market Alshi's trading volume reached a record high of $5.8 billion in November, a 32% increase from October. Polymarket also saw a record high in November, reaching $3.74 billion, a 23.8% increase month-over-month. The combined trading volume of the two platforms approached $10 billion. Market share data shows that this duopoly currently dominates the industry's capital flows, forming a rapidly consolidating duopoly against the backdrop of continuously growing capital formation. (The Block)