Anthropic’s public S-1 filing on October 26 opened the regulatory window for a Nasdaq listing under ticker ANT, with the 15-day SEC review period allowing a roadshow as early as the week of November 9 and pricing shortly thereafter. Trader consensus reflected in the probabilities favors mid-to-late November dates, driven by the company’s explosive first-half revenue growth to $16.3 billion alongside steep reported losses and expectations of a $1.5–2 trillion valuation range. Market volatility in AI equities, post-midterm election timing, and the need to complete the offering before Thanksgiving create the tight clustering around November 18–20, while the 14.5% probability assigned to no IPO by November 30 incorporates residual risks around final pricing, investor demand, and execution.