Polymarket US trading volume jumps 266% despite regulatory battles

Trading on Polymarket’s US exchange more than tripled between June and October, up about 266% as the company faced state and federal scrutiny.

Monthly volume rose to $14.77 billion from $4.04 billion over that period, according to data from analytics platform TickerTracker, which counts trades at the contracts’ full payout value.

Polymarket told CNBC on Tuesday that its annualized revenue had topped $1.8 billion, up from more than $1 billion in June.

Combo contracts, which bundle multiple predictions into a single wager, accounted for $8.6 billion, or 58.2%, of October’s volume. Sports contracts were the next-largest category at $4.57 billion, or 31%.

The platform’s US arm has grown rapidly since the company widened access in May, as states challenge whether federally regulated prediction markets can offer sports contracts without state gambling licenses. Polymarket began admitting US traders to the separate exchange in late 2025, three years after a settlement with the Commodity Futures Trading Commission (CFTC) led it to block US trading on its international platform.

Polymarket US trading volume by category in October 2026. Source: TickerTracker

The growth also follows a surge in sports-related trading during the FIFA World Cup, which ran from June 11 to July 19. Soccer contracts generated $1.81 billion in trading volume in June, up from $85.4 million in May, according to TickerTracker.