Prediction market combos and parlays: the best platforms in 2026
7 min read
By Turk, founding engineer at Totalis. We build the combo platform for prediction markets on Hyperliquid.
As of 8 November 2026, twelve platforms offer prediction market combos, the multi-leg positions sportsbooks call parlays, and they differ on leg limits, pricing and selling early. We build Totalis, which offers Combos of 2 to 5 Hyperliquid markets outside the US.
Contents
The short answer#
The best platforms for prediction market combos in 2026 are Totalis for Combos that mix sports, esports, crypto prices, finance and economics markets outside the US; Kalshi for the widest range of combo events on a CFTC-regulated exchange; Polymarket for sports combos you can sell before resolution; and Robinhood or Coinbase for US traders already on those apps.
What is a prediction market combo?#
A combo is one position built from two or more outcomes, called legs, that pays in full only if every leg wins. Market makers usually quote the whole combo, so related legs can price far from the product of the leg prices (how multi-leg payouts work). Sportsbooks call this structure a parlay; prediction markets call it a combo. Why prediction markets say combo covers the naming, and prediction markets vs sportsbooks the other differences.
Compare combo platforms at a glance#
"Not stated" means the company's own pages say nothing, as of 8 November 2026.
| Platform | Legs | How priced | Sell early | Voided leg | Availability |
|---|---|---|---|---|---|
| Totalis | 2 to 5 | RFQ | Makers may buy back | Fraction multiplies payout | Not US; invite code |
| Kalshi | 2+, no max stated | RFQ | Not stated | DNP leg at last fair price | Many countries |
| Polymarket | 2 to 50 (API) | RFQ | Yes, if a buyer quotes | 50/50 leg counts 0.5 | Close-only in US, UK, others |
| Polymarket US | 2 to 10 (FAQ), 50 (API) | Order book, optional RFQ | Not stated | Last fair market price | US residents, KYC |
| Robinhood | Up to 10 | Exchange quote, fill-or-kill | Yes, fill-or-kill | Nonstandard leg caps payout | US; no sports in MD, MI, NV, OH, UT |
| Coinbase | 2 to 10 | RFQ | Yes, while all legs live | Settles between 0 and 1 | US residents except Nevada; sports unavailable to Michigan residents |
| FanDuel Predicts | 2 to 6 | Market-set | Select markets | Leg's settlement price | US FCM, 18+ |
| Crypto.com | Up to 20 | Not stated | Not stated | Not stated | US only |
| Novig | 2+ | RFQ | No | Fair value, multiplied | US except NV, AZ, MI |
| ProphetX | 2+ | Third parties | Not stated | Leg dropped; same-event void voids all | Some locations blocked |
| SX Bet | Up to 10 | RFQ, 60 seconds | Not stated | Own docs disagree | Not US |
| Underdog | Not stated | Not stated | Yes | Fair value, multiplied | Not AZ, MI, NV, NY |
Fees compared#
C is contracts and p the price.
| Platform | Combo fee |
|---|---|
| Totalis | 1.5% of stake on entry, 1% of profit above net stake |
| Kalshi | Taker fee; accepted quoters pay the maker fee |
| Polymarket | 0.05 × C × p × (1 − p); makers pay nothing |
| Polymarket US | C × p × [0.0695 × (1 − p) + 0.085 × (1 − p)^4]; no maker rebate |
| Robinhood | No combo fee stated; event-contract commission plus exchange fee |
| Coinbase | Shown before you confirm |
Full published schedules: Totalis · Kalshi rule filing · Polymarket · Polymarket US · Robinhood · Coinbase
1. Totalis#
Overview: Totalis trades Hyperliquid's HIP-4 outcome markets singly or as Combos of 2 to 5, with makers competing to quote each Combo's payout (how Totalis Combos work). Our guide to what Totalis is and how it works covers the whole app.
Best for: Traders outside the US who want sports, crypto, index and stock legs in one position. Our essay on why Combos beyond sports matter makes the case.
Fees: 1.5% of stake on entry and 1% of profit (Totalis fees and limits); worked example below.
Custody: Stakes lock in the Totalis vault on HyperEVM, which starts settling from Hyperliquid's results within about 10 seconds of the deciding leg.
Availability: Not available to US persons or anyone in the US, per the Totalis terms of service. Signing up takes an invite code.
Limitations: Fewer markets than Polymarket or Kalshi: a market joins Combos within 7 days of its event, some are excluded, and one question gets one leg. Stakes go up to 1,000 USDC for now. You can ask makers to buy a Combo back, but they may not bid.
2. Kalshi#
Overview: A Kalshi combo pays up to $1.00 per contract when every leg wins, and each becomes its own market with its own order book (Kalshi's combos help page).
Best for: Combos on sports, entertainment and more from a CFTC-regulated exchange.
Fees: Takers pay a taker fee and accepted quoters a maker fee, per Kalshi's rule filing with the CFTC.
Custody: A custodial Kalshi account.
Availability: Kalshi can be traded from many countries under its Member Agreement; Kalshi alternatives covers the rest.
Limitations: No quote means no fill, and a filled combo can't be cancelled or reversed. Settlement typically takes 1 to 12 hours after the last leg.
3. Polymarket#
Overview: Polymarket.com offers sports Combos; makers quote within 400 ms and you have 10 seconds to accept (Combos overview).
Best for: Sports combos (moneyline, spread, total) you can sell before resolution if a buyer takes them (Polymarket help).
Fees: A 0.05 taker rate on every combo; makers pay nothing (Polymarket fees).
Custody: Trading collateral is pUSD, a USDC-backed token on Polygon.
Availability: The US, UK, France, Germany and others are close-only.
Limitations: Sports only. The requester API takes 2 to 50 legs, and a 50/50 leg pays 0.5 (combinatorial positions).
4. Polymarket US#
Overview: Polymarket's US exchange; its combos FAQ allows 2 to 10 markets; its API takes up to 50.
Best for: US residents who want Polymarket combos.
Fees: Combos pay their own taker fee curve, with no maker rebate.
Custody: Funds sit in a dedicated customer account separate from Polymarket US's operating funds.
Availability: US residents; sign-up requires an SSN.
Limitations: Combos trade on the order book with optional RFQ (combos API); no combo exit is described.
5. Robinhood#
Overview: Robinhood's custom combos take up to 10 legs on supported events, including pro football and basketball.
Best for: US traders who already use Robinhood.
Fees: No combo fee is stated; event contracts pay a commission plus an exchange fee of up to $0.01 per contract.
Custody: A custodial account; trading needs an approved Robinhood Derivatives account.
Availability: US residents. Maryland, Michigan and Nevada residents can't trade sports contracts, and since 2 November 2026 Ohio and Utah residents can't open new ones (eligibility).
Limitations: Custom combos open and close fill-or-kill, so closing can fail. One nonstandard leg caps the payout (settlement rules).
6. Coinbase#
Overview: Coinbase Sports Combos bundle 2 to 10 legs from one game or several, priced by RFQ.
Best for: US traders who want sports combos with cash out.
Fees: Shown on the order confirmation before you trade.
Custody: Trades draw on your Coinbase.com USD or USDC balance; the product is available through Coinbase Financial Markets.
Availability: US residents, excluding Nevada.
Limitations: Select sports markets only, and linked outcomes can't share a Combo.
Other options: FanDuel Predicts combos take 2 to 6 pre-match sports legs at 2% of the potential payout. Crypto.com's Predict Pro combines up to 20 predictions; its sports event trading is US only. Novig has liquidity providers price multi-leg trades with the fee in the quote, offers no cash out, settles void legs at fair value and excludes Nevada, Arizona and Michigan. ProphetX drops a void leg unless another leg shares its event, which voids the order; only takers pay its fee, and some locations are blocked. SX Bet takes up to 10 legs at 5% of profit (user guide) and excludes the US; its user guide counts a void leg as a loss, while its developer docs refund stakes. Underdog allows early cash out and is unavailable in Arizona, Michigan, Nevada and New York.
How many legs can you do in a combo?#
At least two everywhere. The cap is 5 on Totalis, 6 on FanDuel Predicts, 10 on Robinhood, Coinbase, SX Bet and Polymarket US's app, 20 on Crypto.com and 50 through Polymarket's APIs. Kalshi, Novig, ProphetX and Underdog state none. Each extra leg draws fewer quotes.
Are combos all or nothing?#
Mostly. One losing leg makes the combo pay zero. A leg that can't resolve, like a cancelled game, usually stays in at a fair value and scales the payout instead of refunding you, as does a fractional result from scalar HIP-4 markets. ProphetX drops a void leg; SX Bet's documents disagree.
What a Totalis Combo costs: a worked example#
From the Totalis fees page, as of 8 November 2026: 10 USDC on a Combo quoted at a 25 USDC payout. The entry fee is 0.15, leaving 9.85 USDC net.
| Outcome | Settles at | Profit fee | You receive |
|---|---|---|---|
| Every leg wins | 25 USDC | 0.1515 | 24.8485 USDC |
| One leg at 0.5, rest win | 12.5 USDC | 0.0265 | 12.4735 USDC |
| One leg at 0.3, rest win | 7.5 USDC | None | 7.5 USDC |
| Any leg loses | 0 | None | 0 |
At 01:05 UTC on 9 November 2026, 124 HIP-4 outcomes could join a Combo, out of 253 listed: football (soccer), NBA, NFL and MLB games, crypto, indices, stocks, commodities and esports. NFL prediction markets and NBA prediction markets show how a game leg settles, and bitcoin price prediction markets covers the crypto legs. The December Fed decision opens for Combos on 2 December. Build a Combo on Totalis.
How we evaluated these platforms#
We compared leg limits, pricing, early exit, voided-leg rules, fees and availability, using each platform's own pages, verified on 8 and 9 November 2026. We build Totalis.
Verdict#
If you want Combos that mix sports, crypto and index markets outside the US, choose Totalis. For the widest range of US-regulated combo events, Kalshi; sports combos you can sell early, Polymarket or, in the US, Coinbase; one app you already use, Robinhood.
About the author#
Turk is a founding engineer at Totalis, the prediction market app on Hyperliquid.
Sources and further reading#
- Totalis fees and limits, accessed 2026-11-09
- Kalshi combos help page, accessed 2026-11-09
- Polymarket Combos overview, accessed 2026-11-09
- Robinhood: trading event contracts, accessed 2026-11-09
- Coinbase Sports Combos, accessed 2026-11-09
Related: Polymarket alternatives · Hyperliquid vs Polymarket vs Kalshi · Collateral efficiency for Combos
FAQ#
Can you cash out a combo early?#
Yes on Polymarket, Robinhood, Coinbase, Underdog, FanDuel Predicts (select markets) and Totalis, if someone quotes; not on Novig.
Can US traders build combos on Polymarket?#
Yes, on Polymarket US: 2 to 10 markets per its FAQ, after KYC. Polymarket.com is close-only in the US.
Why won't my combo fill?#
On RFQ platforms a combo fills only when a maker quotes it. Long or unusual combinations draw fewer quotes; drop a leg or wait.
Which markets can join a Totalis Combo?#
HIP-4 markets within 7 days of their event, with a live price on both sides, one per question; Totalis excludes some. Others trade as singles.
This article is for informational purposes only and is not financial advice. Prediction market positions can lose their entire value. Availability of markets and features depends on your jurisdiction and each platform’s terms.