Anthropic IPO Closing Market Cap

Resolution Criteria

This market will resolve based on Anthropic's market capitalization at the closing price on its first day of trading. If no IPO occurs by June 30, 2026, 11:59 PM ET, the market will resolve to "No IPO by June 30, 2026". Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency. It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day. If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket. Resolution will be based on the primary exchange’s official listing page. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on Anthropic’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.

Prediction market trading on Anthropic's IPO closing market capitalisation is overwhelmingly concentrated on the 'No IPO by June 30, 2026' outcome, making it the heaviest-backed position by a substantial margin. The remaining volume is thinly distributed across six valuation brackets ranging from under $100 billion to $600 billion or above. Resolution is based on Anthropic's official closing market capitalisation on its first day of trading, sourced from the primary exchange listing, with a deadline of 30 June 2026.

Market structure

The market contains seven outcomes: six market capitalisation brackets (<$100B, $100–200B, $200–300B, $300–400B, $400–600B, $600B+) and a 'No IPO by June 30, 2026' fallback. Volume is heavily concentrated on the 'No IPO' outcome, with the six valuation brackets together attracting only marginal interest. Resolution uses the official closing price on Anthropic's first trading day; if no IPO occurs by 30 June 2026, the fallback outcome resolves. If a value falls exactly between two brackets, the higher bracket applies.

Background

Anthropic, the AI safety company founded in 2021 by former OpenAI researchers including Dario and Daniela Amodei, has grown rapidly into one of the most highly valued private technology companies in the world. The company's Claude family of large language models competes directly with OpenAI's GPT series and Google's Gemini. Anthropic has raised successive funding rounds at valuations exceeding $60 billion, with backing from Amazon and Google among others. Despite its scale, Anthropic has made no public announcement of IPO plans, and its leadership has consistently characterised the company as focused on research and product development. The question of whether and when Anthropic might pursue a public listing has attracted significant speculative interest given the broader AI investment boom.

Key factors

The primary factor driving resolution is whether Anthropic files for and completes an IPO before the 30 June 2026 deadline. This depends on multiple decision points: the company's internal strategic priorities, broader equity market conditions for technology listings, the regulatory environment for AI companies, and the appetite of existing investors for liquidity. If an IPO does proceed, the closing market capitalisation would be shaped by the final offer price, the total share count at listing, and first-day secondary market trading dynamics. Historical precedent shows that high-profile technology IPOs can trade significantly above or below their offer-day valuations depending on investor sentiment and sector momentum. Circuit breakers or abbreviated trading sessions on the first day would trigger specific resolution contingencies outlined in the market rules, with resolution deferred to the next session producing an official closing price.

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