Anthropic’s recent confidential submission of a draft S-1 registration statement to the SEC on June 1, 2026, represents the primary catalyst supporting elevated trader expectations for an IPO later this year. The filing provides the company the option to proceed with a public offering once the review process concludes, with timing dependent on prevailing market conditions and other factors; analysts widely anticipate a potential debut in the second half of 2026, possibly as early as fall. The move follows a Series H round that valued Anthropic at approximately $965 billion and occurs amid robust investor demand for AI equities, a recovering IPO pipeline, and competitive pressure from rivals such as OpenAI also advancing toward public markets. Key upcoming milestones include completion of the SEC comment period and any signals on share pricing or offering size, which could clarify resolution probabilities for markets focused on a 2026 listing.