Portfolio Co Investors 2026 for Mitsui: investors, rounds, and co-investor patterns from StartupFundraising.com research, updated for 2026.
Mitsui accounts for 9 tracked companies with verified cap-table data, 9 of which disclose round sizes totalling $1.9B. The median disclosed raise is $110M, and the largest is Quantinuum at $925M, ahead of Yellow Door Energy ($465M) and Autotalks ($130M).
The names that recur most often on these co-invested cap tables are Mitsui (9 companies), Quanta Computer (1 company), NVentures (1 company), QED Investors (1 company), JPMorganChase (1 company), Amgen (1 company). By latest disclosed round, the market skews Growth (2), Series C (2), Series B (2), Series D (1).
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