Market2026-09-10

Positron raised $875 million at a valuation of $5 billion. The startup designs chips that make AI models run faster. Its previous round closed in February 2026 and valued it at $1 billion. NEA, Atreides Management, Valor Equity Partners and Andra Capital co-led the round. SemiAnalysis Capital, run by analyst Dylan Patel, also took part. Netscape co-founder Jim Clark joined as an investor. Positron disclosed the figures itself.

What changed

Positron was valued at $1 billion in February 2026.

  • $875 million raised
  • $5 billion valuation
  • $230 million round in February
  • $1 billion valuation in February

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