Market Mania: Oklo’s $20B Story Stock Surge

Oklo Becomes the Largest Pre-Revenue Company in the U.S. With a $20 Billion Valuation

Oklo Inc. has surged to a $20 billion valuation, earning the title of the largest pre-revenue company listed on a U.S. exchange. Its rise highlights just how far investors are willing to stretch in search of the next big AI play.

Shares of Oklo (OKLO) trade around $131, up more than 500% in 2025 and nearly 1,500% over the past year. All of this despite the company never generating a dollar in sales.

The attraction isn’t about numbers — it’s about narrative. Oklo is developing small modular reactors (SMRs) designed to supply the immense power demands of AI data centers. The story is boosted by Sam Altman, OpenAI’s CEO, who took Oklo public via his SPAC AltC Acquisition in 2024. Altman served as chairman until April and still owns 5.5% of the company.

Retail investors have embraced the stock. On StockTwits, message volume has been flagged as “extremely high,” with overall sentiment marked “bullish.” “It’s a speculative, growth-driven environment, fueled by lower interest rates, strong market and increased retail participation,” said Chris Tessin of Acuitas Investments.

Earlier this week, Oklo broke ground on its first commercial SMR at Idaho National Laboratory under the Department of Energy’s Reactor Pilot Program. Still, analysts don’t expect revenue until late 2027. Much like biotech firms awaiting FDA approval, Oklo faces a binary outcome: either successful commercialization or failure that renders its technology worthless.

Other SMR competitors are slightly ahead. NuScale Power (SMR) has posted limited revenue since 2022, though mostly from engineering and licensing services, not actual nuclear energy sales.

Wall Street’s view of Oklo remains divided. Bank of America initiated coverage with a buy rating and a $92 target, calling it the best-positioned company in the SMR market. Wedbush’s Dan Ives is more bullish, lifting his target to $150. UBS took a cautious stance with a $65 hold rating, warning that steady growth may not come until 2034. Seaport’s Jeff Campbell downgraded Oklo to neutral this week, arguing the valuation is too stretched.

For now, Oklo epitomizes the “story stock” — its valuation fueled by AI hype, nuclear optimism, and investor enthusiasm. The real test will be whether investors have the patience to wait nearly a decade for the company to turn promise into profit.