Anthropic’s October 26 S-1 filing with the SEC has become the dominant catalyst for trader sentiment on its IPO timeline, positioning the company for a potential Nasdaq debut under ticker ANT as early as mid-November 2026. Revenue reached $16.3 billion in the first half of 2026, a 1,368% year-over-year increase, while the operating loss narrowed and adjusted operating income turned positive at $1.62 billion. A $965 billion May valuation and reported targets of $1.5–2 trillion underpin expectations for one of the largest IPOs on record, though an $80.7 billion net loss—largely from convertible-note accounting—and over $400 billion in compute commitments highlight execution risks. Prediction markets now price near-certain 2026 completion following the filing, with upcoming pricing decisions and any regulatory or market volatility serving as the next key swing factors.