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Atomico portfolio: 2 rounds in AI and data

Rounds where Atomico led or took part, newest first. Led: 2.

1. Callosum raises $100M Seed, Aug 20, 2026. AI infrastructure. Led by Atomico. Software that splits AI workloads into tasks and routes each to the best-suited model and chip.
2. CodeRabbit raises $143M Series C, Aug 12, 2026. Developer tools. Led by Atomico, Smash Capital. AI code review and change-governance platform for pull requests.