Polymarket Test-Launches Parlays on Regulated U.S. Prediction Market Exchange

Polymarket’s regulated U.S. exchange has quietly launched parlays in a beta test environment, expanding the platform’s sports-related event contract offerings as it looks to close the gap with rival Kalshi. Trade data reviewed from the platform’s U.S. arm shows thousands of multi-leg trades were placed in the last week alone, signaling real trader appetite for the new product even in its limited rollout stage.

The move marks the culmination of a process that started back in May, when Polymarket’s U.S. subsidiary self-certified the new contracts with the Commodity Futures Trading Commission. It’s a notable step for a platform that built its early reputation offshore, and it shows how seriously the prediction market space is now competing for the same combo-bet audience that traditional sportsbooks have relied on for years.

What Polymarket Is Calling a Parlay

Polymarket isn’t using the word “parlay” in its official filings. Instead, the contracts are branded “Combinatorial Athletic Outcome Contracts,” or CAOCs — a mouthful that functions exactly like a same-game or cross-game parlay at a traditional sportsbook. Multiple individual sports outcomes get bundled into a single position, and the whole thing only pays out if every leg hits. Miss on one leg and the entire contract expires worthless, mirroring how a parlay bet works at any regulated sportsbook.

Polymarket’s offshore, blockchain-based site — the version that blocks U.S. IP addresses — actually beat its own regulated U.S. exchange to market, rolling out parlay-style trading back on June 10 to coincide with the start of the FIFA World Cup. The domestic version, run through Polymarket’s CFTC-regulated subsidiary, has taken considerably longer to get the green light, a reminder of how much more friction exists for products that touch actual U.S. regulatory oversight.

Why the Timing Matters

The ten-week gap between self-certification and an actual beta launch wasn’t just a paperwork delay — it happened while Kalshi, Polymarket’s chief domestic rival, was rapidly scaling its own combo volume. Kalshi’s parlay-style trading jumped from roughly $4.77 billion in May to $13.78 billion in July, according to trade data, underscoring just how much revenue was on the table while Polymarket’s U.S. product sat in limbo.

That kind of growth is exactly why prediction markets have become impossible for the broader sports betting industry to ignore. Both Kalshi and Polymarket now operate as CFTC-regulated designated contract markets, letting them offer sports-linked event contracts under federal law rather than the state-by-state licensing structure that governs traditional sportsbooks. Sports-related contracts have become the single largest category of volume on both platforms, and multi-leg products are increasingly viewed as the next battleground now that single-event contracts are firmly established.

The rollout isn’t happening in a regulatory vacuum, either. Prediction markets broadly have drawn fresh scrutiny in recent weeks, and several states have pushed back against treating these contracts as anything other than sports betting under a different name. Polymarket and Kalshi have both maintained that CFTC oversight preempts state gambling law, an argument that continues to play out in court as more states challenge that position.

How the Contracts Are Built

Under the terms of its CFTC filing, Polymarket built in several eligibility restrictions meant to protect the integrity of the new product. Athletes, coaches, front-office personnel, team ownership, and their immediate family members are all barred from trading the athletic contracts, closing off an obvious avenue for insider information to influence pricing. Anyone under 18 is also prohibited from participating, consistent with the age restrictions already in place across Polymarket’s other event contracts.

Each individual contract carries a nominal value of $1 and can be priced in fractions of a cent, letting traders take positions across a wide range of confidence levels rather than betting at fixed odds the way a traditional parlay works. Polymarket has also built in an early termination provision, allowing a position to be closed out before its scheduled maturity if one of the underlying legs has definitively lost value ahead of the final result — a flexibility that most standard sportsbook parlays don’t offer once a ticket is locked in.

What Comes Next

For now, Polymarket’s parlay product remains in beta, limited in scope compared to its offshore counterpart. But with football season underway and thousands of trades already logged in the first week, the direction is clear: prediction markets want a real share of the combo-bet market that traditional operators have leaned on heavily for years. Bettors who already track odds across sportsbooks and DFS platforms may soon see prediction market parlays discussed in the same breath as the multi-leg wagers offered on mainstream sportsbook apps.