Anthropic, the AI safety company founded by former OpenAI leaders Darius and Daniela Amodei, is anticipated to go public on or before June 30, 2026. This prediction market tracks whether the company will achieve a $600 billion market capitalization at market close on its IPO day. Current odds of 1% reflect market skepticism about such a high valuation at launch, though Anthropic has raised funding at increasingly valuable valuations during its private phase. A $600B cap would place Anthropic among the largest tech companies globally on day one, comparable to valuations of established trillion-dollar firms. The pricing reflects investor sentiment: while Anthropic's Claude AI model has gained significant adoption, achieving a $600B valuation immediately upon IPO would require extraordinary confidence from underwriters and the market. Resolution will be determined by the official closing price and share count reported by public market data sources on Anthropic's first trading day. The wide gap between current odds and even mid-range estimates suggests the market views this scenario as highly unlikely, though the outcome remains bound by the formal IPO terms and market dynamics on launch day.