Oklo (NYSE: OKLO) shares dropped 21.8% in June, according to data from S&P Global Market Intelligence, even as the company racked up a string of meaningful operational milestones throughout the month.
The steep decline came despite what was, by most measures, one of the more productive months in the company’s recent history, raising questions about whether markets overreacted to broader sector noise.
Oklo is still developing fast-fission nuclear power plants called Aurora powerhouses and has yet to commercialize its technology or generate its first revenue, leaving the stock highly sensitive to investor sentiment.
The company’s first-quarter net loss widened to $33 million, and a $1 billion equity offering announced in May continued to weigh on investor confidence heading into June, as shareholders feared dilution.
On the positive side, Oklo secured a key Department of Energy safety approval for its Aurora plant at Idaho National Laboratory under the DOE’s Reactor Pilot Program, marking a significant regulatory step forward.
The company also signed a memorandum of understanding with Standard Nuclear to collaborate on nuclear fuel recycling and advanced fuel manufacturing, positioning itself in the emerging plutonium fuel sector.
Oklo locked down a major strategic partnership with Centrus Energy to secure high-assay low-enriched uranium supplies to power up to five Aurora powerhouses, reactors intended to support a planned 1.2 GW power campus in Ohio serving Meta Platforms data centers.
The company rounded out the month by acquiring Creative Engineers, a move aimed at strengthening its advanced reactor technology capabilities.
Despite these gains, the DOE’s announcement of a $17.5 billion loan program targeting traditional large-scale nuclear reactors rattled investors who had been betting heavily on small modular reactors amid the artificial intelligence power boom.
That announcement triggered a broad sell-off across the SMR sector, dragging Oklo shares down sharply even though analysts noted the program broadly validates nuclear energy’s role in the coming energy upcycle.
The core tension for Oklo remains the gap between its growing pipeline of government partnerships and its years-away commercial operations, meaning any mixed signal from Washington can prompt rapid profit-taking.
Oklo’s June pullback is a stark reminder that pre-revenue companies trading at elevated valuations are vulnerable to sharp corrections, even when their underlying business momentum is clearly building.
