Sam Altman’s Nuclear Bet: Evaluating Oklo’s Prospects and Risks

Key Points

• Oklo is developing innovative small modular nuclear reactors to power AI data centers.
• The company’s reactor design has not yet been approved by regulators.
• Oklo is expected to remain unprofitable for many years and currently generates minimal revenue.

Sam Altman, best known as the CEO of OpenAI, has also become a prominent backer of emerging technologies across multiple sectors. Most notably, he has invested heavily in the nuclear‑energy start‑up Oklo (NYSE: OKLO). The stock surged in 2025 on excitement about the power demands of AI data centers, reaching a market cap near $25 billion, but it has since fallen roughly 75% in less than a year.

Investors are now debating whether to follow Altman’s substantial personal stake and consider buying the dip.

Nuclear energy innovation

Nuclear power could provide a reliable, low‑cost electricity source for the rapidly expanding AI data‑center industry without raising household electric bills. Companies like Oklo are designing small modular reactors (SMRs) that can be sited directly at data‑center campuses, bypassing the traditional electric grid. Oklo has secured a major agreement with Meta Platforms to supply power from its future plants. A pilot reactor is under development in Idaho in partnership with the Department of Energy, though the design has not yet received full approval from the Nuclear Regulatory Commission.

Image source: Getty Images.

The truth about Oklo stock

Oklo currently has no operational reactors, meaning revenue generation is likely years — possibly a decade — away. The firm’s isotope business contributes only a negligible amount of income. In the past twelve months free cash flow was negative $154 million, and losses are expected to widen as manufacturing scales. Even after the recent price decline, the company’s market capitalization remains around $7.6 billion despite generating essentially no revenue, presenting a high‑risk investment profile.

Given the lengthy path to profitability and the regulatory uncertainties, investors should approach Oklo with caution. The stock’s steep decline does not guarantee a rebound, and additional downside risk remains.

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