Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
4% | 96% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
4% | 96% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Market context
Stephen Curry leaving Golden State before 22 October 2026 would be a major surprise in the real world, because he is already under contract through the 2026-27 season after signing a one-year, $62.6 million extension with the Warriors.[2][3][11] That makes the crowd-implied 4% YES look much lower than the contractual baseline, and it also sits below the kind of “longshot but not impossible” pricing that usually appears when a player is firmly tied to a contender for at least the next season.[12][13]
The closest comparable cases are late-career franchise stars who have signed short extensions while their teams publicly framed retirement or finish-your-career-here outcomes as the expectation. Golden State general manager Mike Dunleavy Jr. said the team wants Curry to “finish his career here”, while reporting around the league has already pointed to extension conversations being possible again once he is eligible later in August.[1][10][15] That matters because the market resolves on roster status, not sentiment: even if Curry is inactive, injured, or in a managed workload role, he still counts as a “No” so long as he remains on the Warriors’ official roster.[2][11]
For traders, the key catalysts are any extension announcement, a trade demand or roster move, or a retirement-related update, though all of those would have to happen before the settlement deadline to flip the market.[2][3][13] The most important near-term watchpoint is the late-August extension window, since reports have already said Curry and Golden State are open to further talks once eligible.[10][13][16] In cross-platform terms, sportsbook-style longodds would generally imply a similar low-single-digit departure chance, while analyst consensus in the recent reporting is much closer to “unlikely unless there is a sudden contract or health shock”.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
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