TechFlow news, December 1 — According to The Block, prediction market platforms Kalshi and Polymarket both set new all-time monthly trading volume records in November.
Data from The Block shows that Kalshi's spot trading volume rose from $4.4 billion in October to $5.8 billion in November, a 32% month-on-month increase. Polymarket also performed strongly, with trading volume increasing from $3.02 billion in October to over $3.7 billion in November, up 23.8% month-on-month.
The combined trading volume of the two platforms approached $10 billion in November, continuing the record-breaking activity seen since the summer. Market share data indicates that Kalshi and Polymarket now dominate global prediction market traffic, forming a rapidly consolidating duopoly.
