Portfolio Co Investors 2026 for Operator Partners: investors, rounds, and co-investor patterns from StartupFundraising.com research, updated for 2026.
Operator Partners accounts for 11 tracked companies with verified cap-table data, 11 of which disclose round sizes totalling $687M. The median disclosed raise is $46M, and the largest is Landis at $222M, ahead of Apella Technology ($101M) and 11x ($76M).
The names that recur most often on these co-invested cap tables are Operator Partners (11 companies), Sequoia Capital (3 companies), SV Angel (2 companies), QED Investors (2 companies), GV (1 company), Arrive (1 company). By latest disclosed round, the market skews Series B (6), Series A (4).