Polymarket Files for Parlays on U.S. Prediction Market Exchange
Polymarket has taken a major step toward introducing parlay-style trading on its U.S. prediction market exchange. The company recently self-certified a new class of sports event contracts with the Commodity Futures Trading Commission (CFTC). These contracts, known as 'Combinatorial Outcome Contracts', will allow users to combine multiple bets into a single trade—much like traditional sports parlays.
The move follows growing demand for such products, with competitors like Kalshi and DraftKings already offering similar features. Polymarket plans to list the new contracts no earlier than May 21, pending regulatory approval.
Polymarket’s filing with the CFTC outlines a structure for multi-leg sports contracts that can be repeatedly listed on its regulated exchange. Unlike its international platform, this filing applies specifically to its U.S. operations. The product, described as a 'Combinatorial Athletic Outcome Contract', merges two or more underlying sports event contracts into one position.
The concept mirrors traditional sports parlays, which bundle multiple bets for higher payouts—though they are notoriously harder to win. This format has proven popular in U.S. sports betting, and prediction markets are now adopting it. Polymarket isn’t the first to explore this space. Kalshi launched a 'combos' feature for all users in mid-December, generating over $100 million in trading volume the prior week. By late April, Kalshi’s exotics category, which includes combo markets, hit a record $412.5 million in weekly volume—accounting for 10.6% of its total trading activity. DraftKings Predictions has also entered the market with its 'Combos' product, letting users combine multiple sports event contracts into a single trade. Meanwhile, FanDuel is testing market-making services for prediction-market parlays, signalling broader industry interest in these products.
The introduction of parlay-style contracts on Polymarket’s CFTC-regulated exchange could expand trading options for U.S. users. If approved, the new product would join similar offerings from Kalshi and DraftKings, further blending prediction markets with traditional sports betting. The filing sets the stage for a potential launch on or after May 21, depending on regulatory clearance.
