Polymarket launches combo trading feature, bringing parlay-style bets to prediction markets

Polymarket just rolled out one of the most requested features in prediction markets: the ability to combine multiple bets into a single position. Think of it as the crypto-native version of a parlay, the betting format that turned your friend’s $10 NFL Sunday wager into either a very good or very bad Monday morning.

The feature, called Combos, went live around June 10-11 and allows users to bundle picks across different markets into one YES or NO trade. The catch, as with any parlay, is that every single leg needs to resolve in the user’s favor for a payout. Get four out of five right and you still walk away with nothing.

How Combos actually work

The platform introduced a Request-for-Quote (RFQ) mechanism that routes Combo trade requests to competing market makers. Those market makers then race to price and fill the order. Market makers have 400 milliseconds to submit their quotes, and users get 10 seconds to accept once a price comes back.

Payouts are calculated by multiplying the implied probabilities of each individual leg together. So if you combine three positions each priced at 50% probability, your Combo payout reflects the combined 12.5% chance of all three hitting.

One notable design choice: Combo positions remain tradable until they resolve. That means if you’re sitting on a four-leg Combo and three legs have already won, you can sell your position to someone else rather than sweating out the final outcome.

Sports first, everything else later

For now, Combos are limited to sports markets, covering moneyline, spread, and totals betting. Polymarket has signaled plans to expand the feature into other market categories, but the initial rollout is focused squarely on sports.

Polymarket published official help documentation and developer guides on June 22 to support both retail users and the market makers who power the RFQ system.

The platform continues to operate on the Polygon blockchain, maintaining its peer-to-peer order book model for standard single-market trades while running the new RFQ pathway specifically for Combos. No new tokens were announced alongside the feature launch, and a native Polymarket token remains unreleased as of July 2026.

What this means for prediction market traders

Combos are fundamentally a higher-risk, higher-reward product. You’re trading probability of any single outcome for amplified returns when everything breaks your way.

There’s real risk here for users. The all-or-nothing nature of Combos means a single incorrect leg wipes out the entire position. And while the tradability of Combo positions partially mitigates this by allowing early exits, liquidity on secondary Combo markets may be thin, especially in the early days of the feature.