Co-investors · Private equity · United States

Who invests with RA Capital Management

152 investors have backed two or more of the 275 startups RA Capital Management has backed in rounds we track. Grouped by kind, each ranked by how many of these startups it shares; Janus Henderson Investors shares the most, 62.

152co-investors
5kinds
Janus Henderson Investorsmost shared (62)
VC firmsmost common kind

RA Capital Management's whole portfolioRA Capital Management's profile

VC firms

97

+73 more

Private equity and asset managers

32

+8 more

Corporate investors

11

Growth funds

7

Government funds

5

Segment by segment

VC firms

97 investors

  1. Wellington ManagementVC firmUnited States31 backed
  2. Samsara BioCapitalVC firmUnited States20 backed
  3. New Enterprise AssociatesVC firmUnited States19 backed
  4. VenrockVC firmUnited States18 backed
  5. TCG CrossoverVC firmUnited States18 backed
  6. FidelityVC firmUnited States16 backed
  7. Novo HoldingsVC firmDenmark15 backed
  8. SanofiInvestment firmFrance14 backed

Private equity and asset managers

32 investors

  1. Janus Henderson InvestorsPrivate equityUnited Kingdom62 backed
  2. OrbiMedPrivate equityUnited States40 backed
  3. Perceptive AdvisorsAsset managerUnited States34 backed
  4. Cormorant Asset ManagementPrivate equityUnited States32 backed
  5. Vivo CapitalPrivate equityUnited States30 backed
  6. Foresite CapitalPrivate equityUnited States21 backed
  7. TCGPrivate equityUnited States17 backed
  8. Forbion Capital PartnersPrivate equityNetherlands15 backed

Corporate investors

11 investors

  1. Eli LillyCorporate investorUnited States12 backed
  2. Google VenturesCorporate investorUnited States10 backed
  3. Novartis Venture FundCorporate investorSwitzerland6 backed
  4. SR OneCorporate investorUnited States5 backed
  5. AbbVieCorporate investorUnited States4 backed
  6. PfizerCorporate investorUnited States4 backed
  7. Leaps by BayerCorporate investorGermany2 backed
  8. TDK VenturesCorporate investorUnited States2 backed

Growth funds

7 investors

  1. RTW Investments LLCGrowth fundUnited States22 backed
  2. Jennison AssociatesGrowth fundUnited States3 backed
  3. Fidelity Management and Research CompanyGrowth fundUnited States2 backed
  4. Lilly VenturesGrowth fundIndia2 backed
  5. Partner Fund Management (PFM)Growth fundUnited States2 backed
  6. HHHBM HealthcareGrowth fund-2 backed
  7. Ares ManagementGrowth fundUnited States2 backed

Government funds

5 investors

  1. National Science FoundationGovernment fundUnited States7 backed
  2. BpifranceGovernment fundFrance4 backed
  3. Connecticut InnovationsGovernment fundUnited States3 backed
  4. National Institutes of HealthGovernment fundUnited States2 backed
  5. European Investment BankGovernment fundLuxembourg2 backed

How this map is made. Every investor here has backed two or more of the same startups as RA Capital Management, in rounds we track. Grouped by kind, each ranked by how many startups it shares with RA Capital Management. Rebuilt nightly; updated 15 November 2026.

More portfolio maps

All portfolios
Portfolio mapRA Capital Management portfolio map264 startups · $48BSector portfolioRA Capital Management's Biotech portfolio197 startups · $38BSector portfolioRA Capital Management's Pharma portfolio44 startups · $8.1BSector portfolioRA Capital Management's Healthtech portfolio10 startups · $1.2BCo-investorsWho invests with Gaingels610 co-investorsCo-investorsWho invests with Goldman Sachs398 co-investors

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