Anthropic’s public S-1 filing on October 26, 2026, with marketing eyed for the week of November 9 and a potential Nasdaq listing under ticker ANT before Thanksgiving, serves as the dominant near-term catalyst for IPO expectations into year-end. The company disclosed nearly $17 billion in third-quarter revenue, supporting reported valuation targets up to $2 trillion amid strong AI-sector investor demand. Broader 2026 activity has already delivered over 250 U.S. IPOs and the second-highest proceeds on record, including recent October pricings such as Aspen Neuroscience and Bambusa Therapeutics, while smaller filings continue to clear the SEC. Elevated Treasury yields and recent equity volatility have prompted selective postponements like OPay, yet the active backlog and favorable conditions for quality names keep execution risk contained. Key upcoming milestones include Anthropic’s roadshow timing and any additional large-cap filings clearing regulatory hurdles in the next two weeks.