ClickHouse funding: Every round, investor, and valuation (2026)

ClickHouse makes a columnar database built to answer analytical queries over billions of rows in milliseconds. The software is free and open source. The company makes money from ClickHouse Cloud, a managed version that customers pay for by usage, and from add-ons for observability, Postgres, and AI agents.

ClickHouse has raised about $1.15 billion since it became a company in September 2021. That covers six equity rounds, from a Series A that month to a $400 million Series D in January 2026, plus a $100 million credit facility. The Series D valued the company at about $15 billion.

The database itself is much older than the company. It started in 2009 as an internal tool at Yandex, Russia's largest search engine, and the funding story begins with how it got out. Let's dive into ClickHouse's funding history.

ClickHouse's funding falls into three stretches: a spin-out and two quick rounds in 2021, three years of building a cloud business on that money, and a burst of AI-driven rounds from 2025. Index Ventures is the only Series A investor that joined the Series D.

Alexey Milovidov built the first prototype of ClickHouse at Yandex in 2009 to power Yandex.Metrica, the company's web analytics service. Yandex released it as open source in June 2016, and by 2021 companies such as Uber, Tesla, Spotify, eBay, and ByteDance were running it on their own servers.

Yandex earned nothing from that adoption. In September 2021, it moved the project into ClickHouse, Inc., a new US company formed with Benchmark and Index Ventures, two firms that had backed open-source businesses such as Elastic and Confluent.

Milovidov became chief technology officer. Yury Izrailevsky, who left a vice president of engineering role at Google, took charge of product and engineering, and Aaron Katz became CEO.

Index and Benchmark led a Series A of nearly $50 million, and Yandex N.V. invested alongside them, which is how the parent kept a large stake in its former project.

Five weeks later, Coatue and Altimeter co-led a $250 million Series B at a $2 billion valuation. Lightspeed, Redpoint, and FirstMark joined as new investors. Yandex, Almaz Capital, and Lead Edge, all Series A participants, put in more.

The pitch was a commercial cloud product that did not yet exist. ClickHouse said it would double its team that year and again the next, and use the money to build a managed service that enterprises could buy without running their own clusters.

ClickHouse Cloud reached general availability in December 2022 after a two-month beta that signed more than 100 paying customers. Thrive Capital invested the same month as an extension to the Series B. TechCrunch described it as an eight-figure round.

Russia's invasion of Ukraine in February 2022 put Yandex's international assets under pressure. Yandex N.V., the Dutch parent, sold its Russian business in July 2024 and renamed itself Nebius Group. ClickHouse was not part of the sale, so the stake moved to Nebius, now a Nasdaq-listed AI cloud company.

ClickHouse then went three and a half years without a priced round. The 2021 money paid for the cloud launch and its first acquisitions.

Khosla Ventures led a $350 million Series C in May 2025, and Bloomberg reported a $6.35 billion valuation. ClickHouse said it had grown more than 300% in the past year, with Anthropic, Tesla, and Mercado Libre among its new customers. It also signed a $100 million credit facility with Stifel and Goldman Sachs.

In October 2025, ClickHouse extended the Series C without giving an amount. Citi Ventures, Insight Partners, Peak XV, D. E. Shaw Ventures, and Adams Street joined, along with San Francisco 49ers players Brock Purdy, Christian McCaffrey, and Kyle Juszczyk. The company said its annual recurring revenue (ARR) had more than quadrupled in a year.

Dragoneer led the $400 million Series D in January 2026, about eight months after the Series C. ClickHouse announced the acquisition of Langfuse, an AI monitoring tool, and a managed Postgres service on the same day. No new round has been announced since.

ClickHouse's valuation rose about 7.5-fold between its Series B in 2021 and its Series D in 2026. More than half of that gain came in the eight months between the last two rounds.

The $2 billion price in 2021 came from the peak of the software funding boom, before ClickHouse had a cloud product to sell. It took three and a half years of revenue growth to justify a price about three times higher.

The jump to $15 billion was faster. ClickHouse said ARR grew more than 250% in the year before the Series D, and it crossed $250 million in run-rate revenue in May 2026. TechCrunch put the Series D price at more than 60 times that figure.

Nebius reports the change in its own accounts. It booked a $781 million gain in the first quarter of 2026 from revaluing its ClickHouse stake after the Series D.

ClickHouse's cap table has three layers: Yandex's successor and the two venture firms that set up the company, the growth funds that priced the 2021 boom, and a wave of AI-focused and institutional investors since 2025.

Nebius is the largest known shareholder. The Information reported in 2025 that it owned about 28% of ClickHouse, and Nebius describes the holding as "a significant minority equity stake." It also invested in the Series C.

The stake is a financial holding left over from the spin-out. Nebius marks it to each new round, which is why its first-quarter 2026 results carried the gain from the Series D.

Index and Benchmark co-led the Series A and formed the company with Yandex. Both returned for the Series C, and Index also joined the Series D. Their bet was that ClickHouse could follow other open-source companies they had backed, which give away the core software and charge for a hosted version.

Coatue and Altimeter co-led the Series B and set the $2 billion price. Coatue came back for the Series C, and Altimeter for the Series C extension. Thrive Capital, best known for its bets on OpenAI, wrote its check in 2022 when the cloud product launched.

Khosla Ventures led the Series C and returned for the Series D. Partner Ethan Choi said the firm backed ClickHouse for real-time data platforms that can handle the queries AI agents generate.

Dragoneer led the Series D. The San Francisco growth firm has backed data companies for a decade, including a 2020 round that became part of Snowflake's pre-IPO ownership, and it joined OpenAI's $41 billion round in 2025. Partner Christian Jensen said that as AI models improve, "the bottleneck moves to data infrastructure."

GIC, Singapore's sovereign wealth fund, was already an investor by the Series C and returned for the extension and the Series D. It was joined in the Series D by funds advised by T. Rowe Price and by WCM Investment Management, the kind of public-market investors that often buy in during the last private rounds before a listing.

GIC also co-led Vercel's 2025 funding round, another developer platform that sells to AI startups. Vercel is also a ClickHouse customer.

Lightspeed, Redpoint, FirstMark, Bessemer, Battery, IVP, and BOND fill out the venture side. The Series C extension added Citi Ventures, Insight Partners, Peak XV, and D. E. Shaw Ventures. The three 49ers players are the best-known individual investors.

ClickHouse spends its funding on the cloud service, acquisitions, and people. It does not run its own data centers, so its main cost of sales is the cloud capacity it rents from AWS, Google, and Microsoft and resells with its database on top.

The 2021 rounds paid for ClickHouse Cloud, which separates storage from computing so customers pay only for the queries they run. Katz pitched it in 2022 as a self-serve product: developers sign up, get free credits, and add a credit card without talking to sales.

That cloud is now the business. Izrailevsky told TechCrunch in May 2026 that the managed service costs customers less than running the free version themselves, which he called a tailwind. The company had more than 4,000 customers by then, including Meta, Capital One, Sony, Cursor, and Decagon, the AI support startup.

ClickHouse has bought at least seven companies and disclosed terms for none of them. Most were open-source projects already built on ClickHouse, which turns each deal into a new product line.

PeerDB, bought in July 2024, became the tool that copies Postgres data into ClickHouse. HyperDX, acquired in March 2025, became the interface for ClickStack, its observability product for logs, metrics, and traces. LibreChat, an open-source AI chat app, followed in November 2025.

Langfuse, announced with the Series D, monitors and evaluates the output of AI applications and had more than 26 million SDK installs a month. RunReveal, a security data platform, joined in September 2026. Earlier deals included Arctype, a SQL client, in 2022 and chDB, an embedded version of ClickHouse, in 2024.

The Series D also funded products outside the core database. A managed Postgres service, built with the open-source cloud company Ubicloud, lets AI applications keep transactional data and analytics on one platform. It was in public beta by May 2026.

The same month, ClickHouse launched ClickHouse Agents, a no-code tool for building analytics agents that runs on Claude. That puts part of ClickHouse's product on how Anthropic sells Claude to other software companies, while Anthropic is also a ClickHouse customer.

ClickHouse hired a chief revenue officer, Kevin Egan, in July 2025 and a chief financial officer, Jimmy Sexton, who ran investor relations at Snowflake, later that year. In August 2026 it launched ClickHouse Labs, a research group led by the database researcher Andy Pavlo.

Sales spending has moved abroad and into brand marketing. ClickHouse entered Japan through a partnership with Japan Cloud, hired a head of Asia Pacific in June 2026, and launched a partner program with more than 60 founding partners. In July 2026, it became the front-of-shirt sponsor of the English football club Fulham.

ClickHouse is chasing the data workloads that AI applications create: high volumes of fast queries from agents, logs from model training, and monitoring of AI output in production. Izrailevsky said in May 2026 that he expects run-rate revenue to reach the high nine figures by the end of the year, and the company is expanding its Microsoft partnership, with a native workload for Microsoft Fabric announced in September 2026.

The company is preparing to go public. Izrailevsky told TechCrunch an IPO could come within the next few years, and in September 2026 ClickHouse added Mike Scarpelli to its board. Scarpelli was chief financial officer at Snowflake and ServiceNow and took both companies public, though ClickHouse has filed nothing and given no date.

The main risk is competition. ClickHouse sells against Snowflake, Databricks, Google BigQuery, and Amazon Redshift, and Databricks' much larger funding rounds give it far more money to spend on the same AI workloads. Its free open-source version also caps what it can charge, and a valuation of more than 60 times revenue leaves little room for a slowdown, at a time when AI companies take the largest share of startup funding.

ClickHouse has raised about $1.15 billion since 2021. That includes about $1.05 billion in disclosed equity across six rounds, most recently a $400 million Series D in January 2026, and a $100 million credit facility from Stifel and Goldman Sachs. Two extensions, in 2022 and 2025, had undisclosed amounts.

ClickHouse's lead investors are Dragoneer, Khosla Ventures, Coatue, Altimeter, Index Ventures, and Benchmark. Other backers include Nebius Group, Thrive Capital, GIC, Lightspeed, Redpoint, FirstMark, Bessemer, Battery, IVP, BOND, Citi Ventures, Insight Partners, Peak XV, D. E. Shaw Ventures, T. Rowe Price, and WCM Investment Management.

ClickHouse was valued at about $15 billion after its Series D in January 2026, up from $6.35 billion in May 2025 and $2 billion in October 2021. It has not raised a new round or announced a new valuation since.

No. ClickHouse is private and has not filed for an IPO. Executives have said the company could go public within the next few years, and it has hired a chief financial officer and a board member with IPO experience.

ClickHouse is owned by Nebius Group, its founders, employees, and venture investors. Nebius, the former Dutch parent of Yandex, held about 28% before the Series D, according to The Information. Co-founders Aaron Katz, Alexey Milovidov, and Yury Izrailevsky still lead the company, and the largest funds include Index Ventures, Benchmark, Coatue, Altimeter, Khosla Ventures, and Dragoneer. Exact stakes are not public.