Portfolio Co Investors 2026 for Partners Investment: investors, rounds, and co-investor patterns from StartupFundraising.com research, updated for 2026.
Partners Investment accounts for 8 tracked companies with verified cap-table data, 8 of which disclose round sizes totalling $856M. The median disclosed raise is $117M, and the largest is Senda Biosciences at $226M, ahead of XCENA ($185M) and AffaMed Therapeutics ($170M).
The names that recur most often on these co-invested cap tables are Partners Investment (8 companies), Flagship Pioneering (2 companies), Shinhan Venture Investment (2 companies), Qatar Investment Authority (1 company), Samsung Life Science Fund (1 company), Stage 1 Ventures (1 company). By latest disclosed round, the market skews Series B (6), Series C (2).