Investor Lists

Biotech investors based in Boston

Updated 7 November 2026

Firms with an address in Boston that we have watched back a biotech company in the last two years.

See all 30 →The top 25
30investors on the listNo change this week
430cheques in 12 months-5% against the market
$43Mmedian round they joined+438% against the market median
90%wrote a cheque in 12 months
70%have led a round

The Top 25

Ordered by cheques observed, never by anything anyone paid for

Deploying now (23)

  1. 1MassChallengeDeploying nowAccelerator · United States984$1.8Mmedian roundSept 2026last seen
  2. 2Polaris PartnersDeploying nowVC firm · United States490$36Mmedian roundOct 2026last seen
  3. 3RA Capital ManagementDeploying nowPrivate equity · United States395$93Mmedian roundNov 2026last seen
  4. 4Wellington ManagementDeploying nowVC firm · United States297$130Mmedian roundOct 2026last seen
  5. 5Cormorant Asset ManagementDeploying nowPrivate equity · United States176$102Mmedian roundOct 2026last seen
  6. 6Omega FundsDeploying nowVC firm · United States104$88Mmedian roundSept 2026last seen
  7. 7MassMutual VenturesDeploying nowVC firm · United States84$14Mmedian roundOct 2026last seen
  8. 8Pillar VCDeploying nowVC firm · United States83$8.2Mmedian roundSept 2026last seen
  9. 9The E14 FundDeploying nowVC firm · United States72$8Mmedian roundOct 2026last seen
  10. 10One Way VenturesDeploying nowVC firm · United States71$8Mmedian roundNov 2026last seen
  11. 11Bain CapitalDeploying nowPrivate equity · United States58$50Mmedian roundAug 2026last seen
  12. 12Longwood FundDeploying nowVC firm · United States53$60Mmedian roundAug 2026last seen
  13. 13Optum VenturesDeploying nowVC firm · United States53$25Mmedian roundOct 2026last seen
  14. 14Bain Capital Life SciencesDeploying nowPrivate equity · United States49$134Mmedian roundOct 2026last seen
  15. 15Clean Energy VenturesDeploying nowVC firm · United States42$10Mmedian roundSept 2026last seen
  16. 16PharmStarsDeploying nowAccelerator · United States34$1.6Mmedian roundJun 2026last seen
  17. 17Delos CapitalDeploying nowPrivate equity · United States11$34Mmedian roundJun 2026last seen
  18. 18Catalyst Health VenturesDeploying nowVC firm · United States9$25Mmedian roundOct 2026last seen
  19. 19Longview VenturesquietVC firm · United States9$45Mmedian roundMay 2025last seen
  20. 20T1D FundDeploying nowCorporate VC · United States7$50Mmedian roundOct 2026last seen
  21. 21Visible VenturesquietVC firm · United States3$23Mmedian roundSept 2025last seen
  22. 22AMR Action FundDeploying nowVC firm · United States2$15Mmedian roundJul 2026last seen
  23. 23Juvia GroupDeploying nowVC firm · United States2$243Mmedian roundOct 2026last seen
  24. 24Kendall Capital PartnersDeploying nowVC firm · United States2$41Mmedian roundMar 2026last seen
  25. 25Newpath ManagementDeploying nowPrivate equity · United States2$98Mmedian roundMay 2026last seen
5 more on this list

All 30 are in the app, with filters for stage, sector and market. A free account shows 10 per search, Pro up to 1,000.

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Quick answers about biotech investors based in Boston

Who are the most active biotech investors based in Boston?

By cheques observed, the most active are MassChallenge, Polaris Partners, RA Capital Management, Wellington Management and Cormorant Asset Management.

How many biotech investors based in Boston are there?

30 are on record. 90% made an investment in the last 12 months and 70% have led a round.

Which stages do biotech investors based in Boston back?

Of the rounds with a named stage in the last 12 months, mostly Series A (24%) and Series B (19%).

How big are the rounds biotech investors based in Boston join?

The typical (median) round among the leading investors here is $36M.

Which sectors do biotech investors based in Boston back most?

In the last 12 months, mostly Biotech, AI and Pharma.

Which biotech investors based in Boston lead the most rounds?

RA Capital Management (15 led), Wellington Management (15 led) and Omega Funds (8 led).

What have biotech investors based in Boston invested in recently?

Recent rounds include Alethio Therapeutics (Series A, Nov 2026, with RA Capital Management), Lazarus AI (Nov 2026, with One Way Ventures) and Dren Bio (Other, Oct 2026, with Juvia Group).

How is this list of biotech investors based in Boston ranked?

By cheques observed, from the rounds and filings we watched, and never by anything anyone paid for. It is rebuilt every night.

Built from the rounds we watched, refreshed every night. How we count · Report a correction