Portfolio Co Investors 2026 for Altimeter: investors, rounds, and co-investor patterns from StartupFundraising.com research, updated for 2026.
Altimeter accounts for 12 tracked companies with verified cap-table data, 12 of which disclose round sizes totalling $5.3B. The median disclosed raise is $400M, and the largest is Base Power at $1.2B, ahead of DataRobot ($1.1B) and Parloa ($567M).
The names that recur most often on these co-invested cap tables are Altimeter (12 companies), Salesforce Ventures (5 companies), Alkeon Capital (4 companies), Andreessen Horowitz (4 companies), B Capital Group (3 companies), Index Ventures (3 companies). By latest disclosed round, the market skews Series D (4), Series C (3), Series G (1), Growth (1).
Companies tracked: 12
Disclosed funding total: $5.3B across 12 companies
Median disclosed raise: $400M
Largest raise: Base Power — $1.2B
Stage mix: Series D 4 · Series C 3 · Series G 1 · Growth 1
