Anthropic’s S-1 filing on October 26 and subsequent amendments revealed first-half 2026 revenue of $16.3 billion—up over 1,300% year-over-year from its Claude large language models—along with adjusted operating profitability in Q2, yet steep paper losses tied to convertible notes and over $500 billion in compute commitments. These details, combined with a post-midterm AI stock rout and broader concerns over rising borrowing costs, have driven trader consensus toward a first-day closing market cap in the $1.25–1.75 trillion range, well below earlier $2 trillion hopes but above the $965 billion May private valuation. Competitive pressure from OpenAI and other frontier labs, plus Anthropic’s emphasis on AI safety benchmarks, further shapes positioning. Key near-term catalysts include the November 13 investor session and potential mid-November roadshow ahead of a Nasdaq “ANT” debut before Thanksgiving.