Anthropic’s October 26 SEC S-1 filing, which explicitly states plans to list Class A shares on Nasdaq under ticker ANT, has anchored trader consensus at a 97.4% implied probability for that outcome. The filing, following a confidential June submission, disclosed first-half 2026 revenue of $16.3 billion and positioned Goldman Sachs and Morgan Stanley as lead underwriters, with expectations for a mid-November debut potentially raising tens of billions at a multi-trillion-dollar valuation. This official confirmation from the company’s regulatory documents has rendered alternative tickers such as ANTH or CLDE largely irrelevant in market pricing. While the near-term catalyst remains the upcoming roadshow and pricing process, any last-minute amendment to the registration statement could theoretically shift odds, though no such developments have materialized to date.