Boston · updated 10 November 2026

Unicorns in Boston

6 private companies from Boston valued at $1bn or more, worth $39.9bn combined. 1 are AI companies.

  1. 1$10.1bn
  2. 2$9.5bn
  3. 3
    Snyk logo
    SnykSnyk (pronounced sneak) is a developer-first platform for securing code, dependencies, containers, and infrastructure as code.$8.5bn
  4. 4$6.3bn
  5. 5$3.3bn
  6. 6$2.2bn

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How this list is ranked

By latest reported valuation, from Wikipedia's list of unicorn companies. Ties go to the better-known company. Rebuilt every morning. Methodology · Is your company here? Claim it.