Portfolio Co Investors 2026 for M13: investors, rounds, and co-investor patterns from StartupFundraising.com research, updated for 2026.
M13 accounts for 17 tracked companies with verified cap-table data, 17 of which disclose round sizes totalling $1.4B. The median disclosed raise is $74M, and the largest is Wealthfront at $274M, ahead of Prime Trust ($174M) and Orbital Insight ($131M).
The names that recur most often on these co-invested cap tables are M13 (17 companies), Andreessen Horowitz (3 companies), Craft Ventures (3 companies), Brand Foundry Ventures (2 companies), Dell Technologies Capital (2 companies), Greylock (2 companies). By latest disclosed round, the market skews Series B (8), Series A (5), Series E (1), Series D (1).
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