RA Capital Management, L.P. is a Boston-based hybrid investor founded in 2001 that combines venture-capital. See sector focus and contact routes.
RA Capital Management, L.P. is a Boston-based hybrid investor founded in 2001 that combines venture-capital and hedge-fund style strategies in healthcare and life sciences. Its public materials describe it as a multi-stage, evidence-based investor in drugs, medical devices, diagnostics, services, and research tools, with activity in both public and private markets and a growing planetary-health focus. It typically invests across seed to later-stage rounds and in the U.S. and Europe; one directory source says it may invest under $1 million in some early rounds, though formal check-size guidance is not publicly standardized. Named portfolio companies include Passage Bio, Apellis Pharmaceuticals, Relay Therapeutics, and ProQR Therapeutics. RA Capital also emphasizes internal scientific diligence through TechAtlas and has published on evidence-based biotech investing and company formation.
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