Polymarket US October Volume Climbs to $14.77 Billion as Combos Reach 58%

Polymarket US recorded $14.77 billion in face-value contract volume in October 2026, nearly 3.7 times June’s total, as Combo contracts made up more than half of activity on the U.S. venue.

The monthly total rose from $4.04 billion in June to $14.77 billion in October, an increase of about 266%. That is a $10.73 billion gain over the four-month comparison. The measure counts contracts at their full payout value, rather than the cash traders paid to buy them.

Sports contracts generated $4.57 billion in October volume, or 31% of the total. Combos accounted for $8.6 billion, equal to 58.2%. These category figures describe contract volume on Polymarket US during October.

A contract’s face value reflects its full payout, not its purchase price. For example, 100 contracts with a $1 payout count as $100 in volume even if the buyer paid 63 cents for each one. The total therefore measures contracts at payout value, not the amount customers spent.

The October figure followed September’s $8.7 billion in Polymarket US contract volume. The two monthly totals cover the same venue and use face-value contract volume.

A Combo bundles multiple market positions into one trade. The trade wins only if every position in the bundle resolves in the trader’s favor. Polymarket US offers Combos on sports moneyline, spread and total markets.

Polymarket US is a CFTC-regulated contract market that operates separately from Polymarket International, a blockchain-based protocol. The $14.77 billion figure covers the U.S. venue alone.