Lambda’s valuation trajectory reflects strong AI infrastructure demand and capital inflows. Secondary market marks place the company near $10.1 billion as of October 2026, up sharply from the $5.9 billion post-money Series E in November 2025. The dominant near-term catalyst is the reported $4 billion pre-IPO equity round led by Blackstone and Coatue at a $14.5 billion pre-money valuation, which would mark Lambda’s final private financing ahead of a targeted 2027 IPO. This follows a surge in backlog to $50 billion by September—largely from a $35 billion Anthropic commitment—plus a separate $1 billion debt facility closed in early October. Traders price in rapid resolution of the round and sustained GPU demand through year-end, tempered by execution risks around customer concentration and data-center buildout costs.