Anthropic Files Confidential IPO: $965B Valuation Surpasses OpenAI, August Debut Expected

On June 1, 2026, AI giant anthropic officially initiated its public listing process by confidentially submitting an S-1 registration statement to the U.S. SECurities and Exchange Commission (SEC). This strategic move follows a massive $65 billion Series H funding round, which pRoPElled the company's post-money Valuation to $965 billion, surpassing its primary rival OpenAI, whose valuation Stands at $840 billion. Although the specific offering size and listing venue have not yet been disclosed, market expectations suggest that if Anthropic follows a Timeline similar to SpaceX—which took APProximately two and a half months from confidential filing to trading—the AI company could make its public market debut around August. The eventual public prospectus is expected to reveal the company's astonishing revenue growth trajectory for the first time, alongside the substantial capital expenditures required to sustain this rapid expansion.