Portfolio Co Investors 2026 for Avidity Partners: investors, rounds, and co-investor patterns from StartupFundraising.com research, updated for 2026.
Avidity Partners accounts for 19 tracked companies with verified cap-table data, 19 of which disclose round sizes totalling $3.2B. The median disclosed raise is $127M, and the largest is Innovaccer at $675M, ahead of Crossover Health ($292M) and Endeavor BioMedicines ($292M).
The names that recur most often on these co-invested cap tables are Avidity Partners (19 companies), Casdin Capital (4 companies), OrbiMed (3 companies), Omega Funds (3 companies), Longitude Capital (3 companies), Invus (3 companies). By latest disclosed round, the market skews Series A (5), Series C (5), Series B (4), Series D (2).
Companies tracked: 19
Disclosed funding total: $3.2B across 19 companies
Median disclosed raise: $127M
Largest raise: Innovaccer — $675M
Stage mix: Series A 5 · Series C 5 · Series B 4 · Series D 2
