Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
68% | 32% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
68% | 32% | 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 → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| December 31, 2026 | 68% |
| October 31, 2026 | 40% |
| September 30, 2026 | 9% |
| September 15, 2026 | 2% |
| June 30, 2026 | 0% |
| July 31, 2026 | 0% |
Market context
Anthropic has already taken the key procedural step towards a public listing by confidentially filing an S-1 with the SEC, but it has not set a firm IPO date or confirmed an exchange. CNBC reported on 15 July that bankers were lining up investor meetings and that a debut could come as soon as October, although the timing could still shift[1]. That leaves the current 0% implied probability as a statement about certainty, not about whether an IPO process is under way.
Historically, markets tend to treat confidential filings as an early signal rather than a commitment: companies can sit in review, adjust disclosures, or wait for better conditions before pricing. For a company of Anthropic’s size, the relevant comparison is not a routine tech float but a large, heavily scrutinised offering where the public S-1, roadshow schedule and exchange approval become the real checkpoints. Until those appear, any date remains provisional, and a strategic delay would not be unusual[9][10][14].
The main catalysts are official disclosures, not chatter: a public S-1, any SEC amendments, roadshow announcements, and exchange listing confirmations. CNBC’s reporting suggests bankers are already meeting investors, which implies the process is moving through the standard pre-marketing phase, but there is still no announced pricing date or ticker[1][9]. Traders should also watch for changes in market conditions and any sign that Anthropic is choosing between Nasdaq and the NYSE, because either a delay or a formal announcement would materially change the path to a 2026 listing[10][14].
Methodology
Sports-specific comparison page for Anthropic IPO by 2027?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
UK Frequently Asked Questions
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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