Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket UK Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Polymarket UK → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Polymarket UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Polymarket UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Polymarket UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Polymarket UK → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Polymarket UK.
Active sub-markets
Market context
SpaceX remains privately held with no announced IPO timeline, yet Polymarket traders are pricing a 4% probability that the company will list and close its first trading day within a defined price bracket by mid-June 2026. The conditional token structure on Polygon means traders holding YES tokens benefit only if both an IPO occurs and the closing price lands in their selected range; NO tokens resolve to full value if no listing happens by 31 December 2027. Current USDC liquidity reflects deep scepticism about near-term public markets entry, despite SpaceX's valuation exceeding $180 billion in recent private fundraising rounds.
Historical precedent suggests extreme caution. Blue Origin, another Musk-adjacent aerospace venture, remains private despite decades of operations and substantial revenue. Rocket Lab went public via SPAC in 2021 at $9.50, closing its first day at $10.38—a modest 9% pop—before trading volatility reflected investor uncertainty about profitability timelines. Axiom Space and other commercial space firms have similarly delayed or abandoned IPO plans when market conditions tightened. SpaceX's private funding success and Starship development momentum have reduced urgency for public capital.
Catalysts remain sparse. Elon Musk has made occasional public comments about eventual listing, most recently suggesting it could occur once Mars missions materialise—a deliberately distant goalpost. Regulatory clarity on space debris and orbital licensing could theoretically accelerate timelines, though no such announcements are imminent. The 2026 settlement window leaves minimal runway; traders should monitor quarterly aerospace sector performance and any unexpected SpaceX financial disclosures that might signal IPO preparation.
Methodology
We track SpaceX IPO: Closing Share Price on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Where can I trade this market with the lowest fees?
- On Polymarket UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket UK triggers a quick verification flow that finishes in minutes.
Trade SpaceX IPO: Closing Share Price on Polymarket UK
Live order book, 0% fees, USDC settlement in seconds.
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