Why Oklo Stock Plunged on Wednesday

By Neha Chamaria – Dec 17, 2025 at 2:48PM ESTKey PointsOklo is among the chosen DOE partners to build advanced nuclear reactors.Oklo is also collaborating with the government to repurpose plutonium into nuclear fuel.One popular investor and host, however, is urging his callers to sell Oklo stock. These 10 Stocks Could Mint the Next Wave of Millionaires ›NYSE: OKLOOkloMarket Cap$13BToday's Changeangle-down(-9.51%) $7.94Current Price$75.57Price as of December 17, 2025 at 3:24 PM ETThe nuclear energy stock continues to fall despite the company's progress.Investors are giving Oklo (OKLO 9.51%) the cold shoulder this December. The nuclear energy stock slumped on Wednesday, trading 9% lower as of 2:40 p.m. ET. As of this writing, shares of Oklo have fallen 15% in December, following Wednesday's drop. Oklo is building fast-fission nuclear energy plants called Aurora that can run on repurposed fuel. Its ability to recycle nuclear fuel is a major differentiator. Oklo made two back-to-back announcements on Dec. 16 and Dec. 17 related to fuel fabrication, but investors don't seem to be paying any attention to them. Image source: Getty Images. Oklo is making progress in plutonium fuel fabrication To give you a backdrop, a critical part of President Donald Trump's plans to reinvigorate America's nuclear energy industry is to surplus plutonium available for repurposing into advanced reactor fuel. A shortage of domestic nuclear fuel is one of the biggest hurdles for the industry. The U.S. holds a sizable amount of fissile materials such as plutonium, and the Trump administration wants to convert some of that into fuel for nuclear reactors. Oklo is already working with the U.S. government on fuel fabrication. On Dec. 16, the U.S. Department of Energy (DOE) approved a preliminary safety analysis review for Oklo's Aurora fuel fabrication facility (A3F) at the Idaho National Laboratory (INL), allowing the nuclear energy company to begin assembling the facility that will fabricate fuel for its first powerhouse, the Aurora-INL. ExpandNYSE: OKLOOkloToday's Change(-9.51%) $-7.94Current Price$75.57Key Data PointsMarket Cap$13BDay's Range$75.38 - $85.5552wk Range$17.42 - $193.84Volume304KAvg Vol19M On Dec. 17, Oklo announced that it is conducting plutonium criticality experiments with Los Alamos National Laboratory (LANL) at the DOE's National Criticality Experiments Research Center. It's a technical milestone for Oklo.Advertisement Why is Oklo stock falling then? Investors perhaps now consider these as routine developments and expect to see more of them as Oklo pushed toward its first Aurora deployment. powerhouse. Or, maybe the stock's fall has to do with something Jim Cramer just said about Oklo. Should you sell Oklo stock now? Cramer, the popular host of CNBC's Mad Money television show, former hedge fund manager, and investor, doesn't foresee any nuclear revolution happening in the U.S. and believes Oklo stock is a sell. To be sure, Oklo is yet to build its first nuclear power plant and sell electricity. The stock, however, already commands a market capitalization of over $12 billion, and that's after the stock's more than 50% drop from its October peak. Oklo has impressive DOE tailwinds, but investors perhaps see Cramer's bearish stance as a warning of more volatility ahead in the stock price. If I were you, though, I wouldn't sell Oklo stock just yet. About the AuthorNeha Chamaria is a contributing Motley Fool stock market analyst covering energy, industrials, utilities, and materials sectors, with a focus on dividend stocks. Prior to The Motley Fool, Neha worked on portfolio valuations for hedge funds at HSBC and authored articles as a journalist. She holds a master’s degree in finance from ICFAI and an MBA from Symbiosis University, along with certifications from the National Stock Exchange of India. Neha was honored with an all-India gold medal for her M.S. in Finance and was the first woman in her family to pursue a professional career.TMFNehamsX@nehamschamariaRead NextDec 10, 2025 •By David Jagielski, CPAUp Nearly 400% This Year, Can Oklo Stock Still Rise Higher?Dec 10, 2025 •By Neha ChamariaWhy Oklo Stock Traded Lower on WednesdayDec 9, 2025 •By Johnny RiceOklo Stock Sank 31.2% In November. What's Next?Dec 9, 2025 •By Scott LevineCan OKLO Stock Beat the Market?Dec 5, 2025 •By Johnny RiceWhy Oklo Stock Slumped 6.3% TodayNov 25, 2025 •By Johnny RiceWhy Oklo Stock Slumped 4.2% Today