Oklo dropped 28% in a month amid uncertainty about nuclear SMR cost economics and deployment pace for AI infrastructure.
Oklo shares are down 9.6% in Thursday afternoon trading at $41.31, extending a month-long slide that has erased 28% of the stock's value. The decline caps a difficult stretch for the pre-revenue advanced reactor developer, with OKLO shares also off 42% year to date.
The sell-off extends beyond a single name. NuScale Power, Uranium Energy, and the wider speculative nuclear and uranium trade have all weakened together over the past month, raising a significant question for investors: is it time to abandon nuclear stocks, or is this a narrower story about pre-revenue names?
The answer lies in nuance. Speculative reactor developers and uranium miners have de-rated sharply, while profitable nuclear-adjacent utilities have held steady. NuScale stock is down 23% over the month, and Uranium Energy shares are down 18%, with UEC off 5% today to $9.56. The VanEck Uranium and Nuclear ETF (NLR) is down 16% for the month, signaling broad pain rather than a single-name blowup.
NuScale is the closest comparison to Oklo as a fellow pre-revenue small modular reactor developer. Uranium Energy sits on the fuel side as a miner. Both share Oklo's high-beta, headline-driven profile. Because they lack revenue, both carry no meaningful P/E ratio, leaving them heavily exposed to sentiment shifts and long-dated milestone timelines.
No single confirmed catalyst drove Thursday's move. The selloff appears to be a continuation of broader de-rating, with investors citing missed or slipping milestone deadlines, the ongoing wait for reactor criticality and regulatory checkpoints, zero revenue, stretched valuation, and reported insider selling. However, insider sales are frequently routine or pre-planned under 10b5-1 programs and are not reliable bearish signals by themselves.
Fundamentally, Oklo remains pre-revenue with a full-year 2024 net loss of $73.62 million but holds $275.3 million in cash, targeting first commercial power in late 2027 to early 2028. Consensus analyst price targets remain elevated at $86.95, even as Oklo stock trades at $41. The company counts a 12 GW Switch agreement among its customer pipeline and received a $25 million pre-payment from Equinix.
The contrast with utility-sector peers tells the story. Constellation Energy shares are down just 2% over the past month, while Vistra stock is up 5% over the same stretch. Both trade on real earnings and long-dated hyperscaler power purchase agreements. Constellation carries a trailing P/E ratio of 22x with EPS of $11.51 and reaffirmed 2026 adjusted EPS guidance of $11 to $12. Vistra reaffirmed 2026 adjusted EBITDA guidance of $6.8 billion to $7.6 billion and was recently upgraded to investment grade by Fitch.
That divergence points to concentrated pain in pre-revenue reactor developers and uranium miners, while nuclear power more broadly is holding up. For investors seeking thematic exposure without single-stock risk, the VanEck fund offers a diversified way to play the uranium and nuclear story, though its 16% monthly drop tracks the same dynamic pulling down the speculative names.
The bull case for Oklo remains intact if you believe in nuclear's growing role powering AI data centers and have conviction in the customer pipeline and pre-payments. The bear case is straightforward: no revenue, execution risk, high valuation, and extreme volatility. Community sentiment on Oklo has stayed polarized, with Reddit sentiment scores holding in the 78 to 88 range during the drawdown even as institutional flows rotated out.
Investors should watch for Oklo's next NRC licensing update, further insider filings, and whether the utility bid in Constellation and Vistra continues to hold. Position sizes should stay modest on speculative names, and investors should keep exposure aligned with their tolerance for milestone risk that stretches into 2027 and 2028.