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NEW YORK - CoreWeave, Inc. (NASDAQ:CRWV) announced Thursday it has reached a definitive agreement to acquire Marimo Inc., creator of an open-source Python development environment designed for AI workloads. The acquisition comes as CoreWeave continues its expansion with a market capitalization of $72.55 billion and strong revenue growth forecast of 174% for fiscal year 2025, according to InvestingPro data.
The acquisition will integrate Marimo's technology into CoreWeave's cloud platform, combining infrastructure with development tools to accelerate AI application building and deployment. Financial terms of the deal were not disclosed.
Marimo's flagship product, the marimo notebook, provides a reproducible programming environment that enables developers to transition from experimentation to production deployments. CoreWeave said the technology will complement its existing Weights & Biases developer platform.
"CoreWeave is creating the most complete environment for AI development, from prototype to production," said Brian Venturo, co-founder and chief strategy officer of CoreWeave, according to the company's press release.
CoreWeave committed to maintaining Marimo's open-source project, stating the notebook will remain freely available and permissively-licensed.
This marks CoreWeave's latest in a series of acquisitions aimed at expanding its AI development ecosystem. The company previously acquired OpenPipe for reinforcement learning tools and Weights & Biases for MLOps capabilities. CoreWeave also recently announced plans to acquire Monolith AI, which specializes in AI applications for physics and engineering challenges.
CoreWeave completed its public listing on Nasdaq in March 2025 under the ticker CRWV.
Morgan Stanley served as Marimo's exclusive financial advisor for the transaction, according to the company statement.
In other recent news, Core Scientific, Inc. stockholders have rejected a proposed merger with CoreWeave, Inc., after a special meeting failed to secure the necessary votes. Meanwhile, CoreWeave has announced plans to expand into the U.S. federal market, aiming to offer AI cloud services to government agencies by pursuing FedRAMP and other authorizations. This initiative, branded as CoreWeave Federal, is part of the company's efforts to meet cybersecurity standards and compliance requirements for government use. Additionally, CoreWeave has appointed Jon Jones as its first Chief Revenue Officer, bringing his extensive experience from Amazon to lead the company's global revenue organization. In another development, CoreWeave has secured a partnership with Poolside to supply over 40,000 GPUs, which Evercore ISI estimates could add approximately $5 billion to CoreWeave's backlog. This deal is expected to boost the company's total backlog to over $55 billion, although the Q3 ending backlog might be closer to $50 billion.
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