Anthropic’s confidential IPO filing and planned November 2026 listing at a potential $2 trillion valuation form the core driver behind the 97.2% market-implied odds against an acquisition before 2027. The company recently closed a $65 billion Series H round at a $965 billion valuation, reported twelvefold revenue growth to $4.6 billion in 2025 despite large losses, and secured hundreds of billions in non-cancelable compute commitments from Amazon, Google, and Microsoft. These steps position Anthropic as an independent public large language model leader rather than an acquisition target. While a sudden strategic bid from a hyperscaler or regulatory shifts around AI consolidation could theoretically intervene, the firm’s scale, founder control structure, and pre-Thanksgiving IPO timeline make such outcomes highly improbable within the market window.