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Prediction market platform Polymarket has started testing parlay-style trading on its regulated US exchange.

The new feature allows users to combine multiple selections into a single position, similar to a traditional sportsbook parlay. The product is currently operating as a beta test and was initially made available through API access rather than the main consumer-facing interface.

Beta Generates $7.4 Million in Volume

According to the report, Polymarket US launched the test on August 5 and generated approximately $7.4 million in parlay trading volume during the early stage of the rollout.

The launch represents another step in Polymarket’s expansion into products that increasingly resemble conventional sports betting. However, the company structures these products as regulated event contracts rather than traditional wagers.

Months After Regulatory Filing

The US test comes months after Polymarket moved to introduce so-called combinatorial outcome contracts in the country.

In May 2026, the company filed documentation to list contracts combining two or more underlying event outcomes. For a combined position to pay out, every selected outcome must settle in the trader’s favor—the same basic principle used in traditional parlays.

Prediction Markets Move Closer to Sportsbooks

The introduction of parlay-style products further blurs the line between prediction markets and traditional betting platforms.

Kalshi has also been expanding its own combination products, while competition between prediction market operators and conventional sportsbooks continues to intensify. The rapid growth of these features is likely to attract further attention from gambling regulators, particularly in states where prediction markets are already facing legal challenges.

Polymarket maintains that its US products operate within the federal regulatory framework for event contracts rather than under state-level gambling laws.

Source: https://www.ingame.com/polymarket-us-test-launches-parlays/