Portfolio Co Investors 2026 for Avalon Ventures: investors, rounds, and co-investor patterns from StartupFundraising.com research, updated for 2026.
Avalon Ventures accounts for 11 tracked companies with verified cap-table data, 11 of which disclose round sizes totalling $691M. The median disclosed raise is $56M, and the largest is Joy at $108M, ahead of OncXerna Therapeutics ($97M) and Otonomy ($94M).
The names that recur most often on these co-invested cap tables are Avalon Ventures (11 companies), OrbiMed (2 companies), Osage University Partners (2 companies), Polaris Partners (2 companies), Versant Ventures (2 companies), AbbVie Ventures (2 companies). By latest disclosed round, the market skews Series B (4), Series A (3), Series C (2), Series D (1).