Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
61% | 39% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
61% | 39% | 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 | 61% |
| December 31 | 42% |
| September 30 | 28% |
| July 15 | 21% |
| February 28 | 0% |
| March 31 | 0% |
Market context
The real-world event is whether Associate Justice Samuel Alito will publicly announce his retirement from the Supreme Court before the end of 2026. Current market-implied probability sits at 0% for a "Yes" outcome, aligning with analyst consensus that no such announcement is forthcoming. Recent reports confirm Alito, aged 76, is actively hiring clerks for the next term and intends to serve into at least 2027, with no public indication of retirement plans [1][2].
Historically, Supreme Court justices have retired at older ages than Alito currently holds; recent retirees like Stephen Breyer and Anthony Kennedy left in their late 80s, making Alito’s current age a strong deterrent to immediate departure [3]. Comparable cases show that justices typically retire only when health declines or political pressure becomes overwhelming, neither of which is currently evident for Alito. This historical pattern reinforces the market’s near-zero pricing.
Traders should monitor official announcements from Alito, the Supreme Court’s term schedule, and any White House pressure on aging justices, as the White House reportedly seeks to influence retirements among Clarence Thomas and Alito [6]. A recent ABC News report explicitly states Alito does not plan to retire this year, citing sources close to the justice [1]. No divergence exists between sportsbook lines, prediction-market odds, and analyst consensus, all pointing firmly to "No".
Methodology
This page reviews Will Samuel Alito announce his retirement by 2026? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.
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?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. 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.
- 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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