The U.S. Department of Energy has granted Oklo (OKLO) startup authorization for its Groves Isotope Test Reactor, a key regulatory step that now allows fuel loading, startup testing and initial reactor operations to begin.

The startup authorization lands after a tough stretch for the Oklo share price, which is down 47% year to date and has fallen 48% over the past 90 days, even though the 3 year total shareholder return is very large. The recent 1 day share price return of 6.2% and 7 day share price return of 4.1% hint that investors are reassessing growth potential and execution risk as Groves moves from paperwork to operations and the leadership team is refreshed.

If this kind of nuclear milestone has your attention, it can be useful to scan a wider set of listed power and infrastructure plays linked to advanced reactors and grid upgrades, including the 88 nuclear energy infrastructure stocks.

Oklo now trades at a steep discount to the average analyst price target after a sharp pullback, even with the recent bounce on the Groves news. Has most of the easy upside already passed, or is that repricing only getting started for this stock?

Most Popular Narrative: 48.8% Undervalued

Oklo's most followed narrative points to a fair value of $80.55 per share, compared with the last close at $41.22, which frames the recent pullback very differently.

Oklo is another modular / small nuclear reactor maker, calling them Aurora Powerhouses. But it is not trying to sell reactors; it is trying to sell long-term electricity contracts while maintaining ownership of the plants. We are talking recurring, predictable revenue, not just selling equipment. Obviously, AI data centers are at play here. That is a big tailwind.

Want to understand why this narrative backs such a large gap to the current Oklo share price? The story leans on aggressive revenue build out, improving margins and a future earnings profile that looks very different from today. The valuation hinges on how those long-term power contracts scale and what profitability they might eventually support.

Result: Fair Value of $80.55 (UNDERVALUED)

However, Oklo still has key weak spots, including effectively zero revenue today and a recent net loss of $128.918m that could test investor patience.

Another View On Oklo Using Market Multiples

The popular Oklo narrative leans on a fair value of $80.55, yet the stock currently trades at a P/B ratio of 2.7x compared with 1.8x for peers and 2x for the broader US Electric Utilities industry. That higher multiple suggests the market already prices in a lot of optimism and leaves less room for error.

For an investor, that gap means valuation risk is real if forecasts or execution slip, even if long-term power contracts eventually materialize. It raises a simple question: Is this premium a price you are comfortable paying for a company with no current revenue and ongoing losses?

Next Steps

The mix of optimism and concern around Oklo is clear, so move quickly, review the full risk and reward profile, and weigh the 1 key reward and 5 important warning signs

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.