Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative UK) Pick polygram.ink (preferred broker) |
43% | 57% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
43% | 57% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| June 30, 2027 | 43% |
| December 31 | 14% |
| September 30 | 8% |
| July 15 | 0% |
| February 28 | 0% |
| March 31 | 0% |
Market context
Samuel Alito, the 78-year-old Associate Justice who authored the majority opinion overturning Roe v. Wade in June 2022, has not signalled any intention to step down from the Supreme Court. Polymarket currently prices the conditional YES token at 8 cents per dollar of potential payout, implying traders assign roughly an 8% probability that Alito will announce his retirement before the end of 2026. This valuation reflects the absence of public statements, health disclosures, or reporting suggesting imminent departure from the bench.
Historical precedent offers limited guidance for predicting Alito's timeline. Justice Anthony Kennedy announced his retirement in June 2018 at age 81, giving the Trump administration a full summer to nominate his successor. Justice David Souter retired in 2009 at 69, relatively young by modern standards. Alito has shown no comparable signals; he has continued writing opinions and participating fully in oral arguments through the 2024 term. Justices often serve into their 80s—Ruth Bader Ginsburg remained on the bench until her death at 87—and Alito has given no public indication of health concerns or diminished capacity.
The primary catalysts traders should monitor are Alito's annual end-of-term reports, any statements from his chambers regarding his future, and broader political developments that might influence his calculus. The 2024 presidential election outcome could theoretically affect his retirement decision, though sitting justices rarely cite electoral results as reasons for stepping down. Media reporting on his health or any public appearances suggesting physical decline would move the market materially. Until such signals emerge, the 8% probability reflects the base rate of unexpected Supreme Court retirements within a two-year window.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Alternative UK, which mirrors the Polymarket order book directly.
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 Polymarket Alternative UK. 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 Polymarket Alternative UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Trade Will Samuel Alito announce his retirement by 2026? on Polymarket Alternative UK
Live order book, 0% fees, USDC settlement in seconds.
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