Dragoneer Investment Group led a $400m Series D round in ClickHouse.

Dragoneer Investment Group, an American investment firm, led a $400m Series D round in ClickHouse, an open-source column-oriented database management system, with participation from Bessemer Venture Partners, GIC, Index Ventures, Khosla Ventures, Lightspeed Venture Partners, T. Rowe Price Associates and WCM Investment Management. "ClickHouse was built to deliver exceptional performance and cost efficiency for the most demanding data workloads, and this momentum validates that strategy. As we look toward the future, we are adding support for unified transactional and analytical workloads, so developers can build any type of applications powered by AI on the best technical foundation. And we are expanding our offering to include LLM observability, so AI application builders can evaluate the quality and behavior of AI outputs as they move into production. Additional funding, combined with continued product execution, positions us to deliver the leading data and LLM observability platform in the AI era," Aaron Katz, ClickHouse CEO.