Anthropic’s IPO market cap odds reflect cooling investor expectations after the company’s late-October S-1 filing revealed explosive revenue growth—reaching roughly $17 billion in Q3 2026—but also steep operating losses and over $500 billion in long-term compute commitments. Broader tech-market weakness, including a sharp Nasdaq decline, has prompted downward revisions from earlier $2 trillion-plus targets to the $1.4–1.6 trillion range, aligning closely with OpenAI’s recent $1.25 trillion private valuation. With marketing underway ahead of a potential mid-November debut, the tight contest between the $1.25–1.5 trillion and $1.5–1.75 trillion bands underscores uncertainty around final pricing multiples, AI-sector comparables, and sustained growth amid high infrastructure costs.