Anthropic IPO by 2027?

Platform comparison

Market context

Anthropic has not announced a public listing date, and the latest reports still frame any debut as conditional rather than imminent. CNBC reported on 15 July that the company had confidentially filed IPO paperwork and was holding banker-led investor meetings, with a possible debut as soon as October, but no firm timing has been disclosed.[2] That leaves the market price anchored to process milestones rather than a signed offer timetable, especially with the current crowd-implied probability at 0% YES.

The best historical read is that a confidential S-1 is only the start of the clock. Anthropic’s filing on 1 June means the next major signal would be a public S-1 amendment, followed by a roadshow and pricing; several market trackers place the earliest practical window in autumn 2026, with October the most commonly cited target.[1][3][9] Comparable late-stage private listings often stay unresolved until the prospectus becomes public, because that is when financials, share count and underwriting terms become visible.[10][13]

For traders, the main catalysts are an SEC filing on EDGAR, a company press release, and any exchange listing notice from Nasdaq or NYSE confirming the ticker and first trade date.[9][10] Watch also for further banker or investor-meeting coverage, since those reports often precede a public filing by weeks and can narrow timing expectations.[2][6][11] If the company instead sells to a public acquirer before listing, the market resolves No immediately under the rules.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Anthropic IPO by 2027? 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 Prediction Today, 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.

UK Frequently Asked Questions

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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.

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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?

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How do I deposit on Polymarket from the UK?

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