Anthropic filed an S-1 for an IPO of Class A common stock on Oct 26, 2026, to list on Nasdaq Global Select Market under ticker ANT, per its notice and post.

Share count and price range are not yet determined. Lead underwriters named for the prospectus are Goldman Sachs and Morgan Stanley, with J.P. Morgan and others also listed on the SEC filing, with 22 underwriters total per breakdown. The registration has not yet become effective, so shares cannot be sold yet.

Reported financials for H1 2026: revenue $16.29B vs $1.16B a year earlier, operating loss narrowed to $693M from $2.14B, net loss $80.7B driven by about $72.4B non-cash fair-value charges on convertible notes tied to rising valuation, per IPO reports and filing summaries.

Filing also cites 2025 revenue $4.59B vs $386M in 2024, Q2 revenue up about 1,368% YoY, adjusted operating income +$1.6B in H1, $131.7B cash and short-term investments at June 30, and 11,900+ customers at $100K+ TTM vs 950+ a year ago, per summaries.

Reports of a mid-November IPO date and a Fable 5.5 model launch in early November are speculation by notjazii and kimmonismus, not stated by Anthropic.