Yes, as of October 2026 you can build a parlay on Kalshi, Polymarket US, Robinhood and DraftKings Predictions, but none of them calls it a parlay: each sells it as a "combo," one contract that pays $1 only if every leg hits. The legs, limits and sports differ by platform, and so does how the price is set. The bigger difference from a sportsbook parlay is the math. A sportsbook multiplies your legs together. A prediction market quotes the whole bundle as a single price, and that changes what you are actually paying for.
Can you parlay on each prediction market? The answer as of October 2026
These products change month to month, so everything below reflects each platform's own help pages and launch coverage as of October 2026. Check the platform before you trade.
Can you parlay on Kalshi?
Yes. Kalshi offers combos, which its help center describes as custom combinations of events traded as a single position. Each combo is its own market with its own order book. Prices come from a request for quote: you ask for the combo, other participants answer with a price, and the order does not fill if nobody quotes. Eligible events are added on a rolling basis and usually appear closer to the start time. A filled combo cannot be canceled, and Kalshi says settlement typically lands within 1 to 12 hours after the last leg resolves.
Can you parlay on Polymarket?
Yes, for U.S. users on the Polymarket US app. Combos went live there on August 19, 2026, through a "Build a Combo" button, with 2 to 10 legs per the exchange's documentation at launch. You can mix games, sports and market types such as winners, spreads and totals, and every leg must hit for the combo to pay. Pricing again runs through a request for quote to market makers. The international polymarket.com site also lists sports combos, but it blocks trading from the United States.
Can you parlay on Robinhood?
Yes. Robinhood added preset combos for NFL games in December 2025 and custom combos in January 2026. Its help center now says you can build a custom combo of up to 10 legs for supported events, including professional football and basketball, mixing outcomes, spreads, totals and player contracts. A custom combo trades as one contract, legs cannot be opened or closed on their own, and orders are fill or kill, so the whole combo fills or nothing does.
Can you parlay on DraftKings Predictions?
Yes. DraftKings launched Combos on its Predictions platform in May 2026, letting you bundle up to six event contracts into one trade, all of which must win. Coverage of the launch reported that Combos are sports only and that tennis and PGA Tour markets were left out at launch. For what each platform charges per contract, see the Kalshi vs BettorEdge fee breakdown, which covers fees in full.
Your parlay is worth more without the house cut.
Every leg a book prices carries hidden vig, so the true payout is smaller than it looks. Build the same parlay against real bettors on BettorEdge and keep more when it hits.
How a sportsbook parlay is priced: multiply the legs
A traditional parlay treats every leg as independent and multiplies the payouts. Take three legs, each at even money, +100. Each one doubles your money, so three of them return 2 x 2 x 2 = 8 times your stake. Put $100 on it and a win returns $800, a profit of $700, so the parlay pays +700. The implied chance is 1 in 8, or 12.5%, which is just 50% times 50% times 50%.
Run the same three legs at the standard -110 price and each returns about 1.909 times your stake. Multiplied out, that is about 6.96 times, so $100 profits roughly $596 instead of $700. The gap is the fee on every leg compounding. Plug your own legs into the parlay calculator and it does this multiplication for any mix of odds.
Why a prediction market prices the combo as one contract
Multiplying only works when the legs have nothing to do with each other. Inside one game they often do. Say Team A to win trades at 60 cents and Team A -3.5 trades at 50 cents. Multiply them and you get 0.60 x 0.50 = 30 cents. But every result where Team A covers -3.5 is also a Team A win, so the real chance that both hit is simply the chance Team A covers: 50%.
Multiplying would sell a 50% outcome for 30 cents. A quoted combo prices what both legs hitting is really worth.
If a combo were priced by multiplying, anyone could buy a 50% outcome for 30 cents, and the seller would lose money on every trade. So prediction markets do not multiply. They treat the bundle as its own contract and ask someone to quote it, and that quote reflects how the legs move together. It cuts the other way too: legs that work against each other can be worth less together than the product says. The prediction market combos guide covers how those contracts are built and settled in more depth.
Are prediction market parlays worth it?
Only if the quote is fair, and with a combo you see one number, not the pieces. Whoever quotes the price sets it, with their own margin inside, and you cannot see how much. The useful check is to turn the quote into a probability with the prediction market calculator, then compare it with what the legs imply on their own. On unrelated legs, a quote well above the multiplied price is you paying for the bundle. On legs that clearly move together, a quote above the product can still be fair. The same rule as any parlay applies: every extra leg is another chance to lose the whole thing.
Prediction market parlay FAQ
Can you parlay on Kalshi?
Yes, Kalshi lets you build a parlay as a combo, a single contract that bundles several events and pays $1 only if every leg wins, priced by a request for quote as of October 2026. You pick eligible events in the combo builder, other participants quote a price, and the order fills only if someone quotes. A filled combo cannot be canceled.
Can you parlay on Polymarket?
Yes, U.S. users can build parlays on the Polymarket US app, where Combos launched on August 19, 2026 with 2 to 10 legs across sports, mixing winners, spreads and totals. Every leg must hit for the combo to pay, and prices come from market makers through a request for quote. The international polymarket.com site blocks trading from the United States.
Why are prediction market parlays priced differently from sportsbook parlays?
Prediction market parlays are priced as one combined contract because the legs are not always independent, while a sportsbook parlay multiplies each leg's payout as if they were. When two legs move together, such as a team winning and the same team covering the spread, multiplying understates the chance both hit, so the combo is quoted on the joint probability instead.
A combo hands you one price with the margin hidden inside it. On BettorEdge community odds you set your line against other real bettors with no vig sitting on top, so the number you see is the number you trade. Open BettorEdge and get this price for real, peer-to-peer.
Your parlay is worth more without the house cut.
Every leg a book prices carries hidden vig, so the true payout is smaller than it looks. Build the same parlay against real bettors on BettorEdge and keep more when it hits.