In the United States, Anthropic is expected to begin marketing its IPO in mid-October 2026. This timeline has shifted from earlier expectations of a public prospectus release last week. The IPO, projected to reach a valuation of $2 trillion, is anticipated to be completed just before the U.S. midterm elections in November 2026.
We’ll perform a deep-dive analysis of all sources and publicly available external materials, then prepare a structured timeline of events, an in-depth report explaining the background and context, and multiple perspectives.