Clear Street Group Inc. Acquires 400,000 Shares of Oklo Inc.

The investment firm purchased a significant stake in the advanced nuclear microreactor company.

Mar. 15, 2026 at 9:51am

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Clear Street Group Inc. has acquired 400,000 shares of Oklo Inc. (NYSE:OKLO), a California-based energy technology company specializing in the design and development of advanced nuclear microreactors. The investment, valued at approximately $44.7 million, represents a 0.26% ownership stake in Oklo.

Why it matters

Oklo's focus on small modular reactor (SMR) technology, which leverages fast-neutron fission and liquid-metal cooling to deliver carbon-free power, has attracted significant investor interest as the industry seeks alternatives to traditional large nuclear plants. Clear Street Group's substantial investment signals confidence in Oklo's technological capabilities and growth potential.

The details

According to a recent SEC filing, Clear Street Group Inc. purchased the 400,000 shares of Oklo during the third quarter. The transaction makes Clear Street Group one of Oklo's largest institutional investors, owning 0.26% of the company's outstanding shares.

  • Clear Street Group Inc. acquired the Oklo shares during the third quarter of the fiscal year.

The players

Clear Street Group Inc.

An investment firm that has acquired a significant stake in Oklo Inc., a California-based advanced nuclear microreactor company.

Oklo Inc.

A California-based energy technology company specializing in the design and development of advanced nuclear microreactors, with a focus on small modular reactor (SMR) technology.

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The takeaway

Clear Street Group's substantial investment in Oklo highlights the growing investor interest in advanced nuclear technologies, particularly small modular reactors, as the industry seeks to develop more compact, efficient, and environmentally-friendly power generation solutions.