Oklo slides as Nvidia-fueled surge cools and short interest stays elevated
Oklo shares fell about 5% on April 28, 2026 as traders continued to unwind last week’s sharp rally tied to the company’s new collaboration with NVIDIA and Los Alamos National Laboratory. The pullback comes amid elevated bearish positioning, with reported short interest rising to roughly 24.14 million shares as of March 31, 2026.
1) What’s moving the stock today
Oklo (OKLO) was down about 5% in Tuesday trading (April 28, 2026), extending the post-rally giveback after shares jumped last week on the company’s April 23 announcement of a collaboration with NVIDIA and Los Alamos National Laboratory focused on nuclear fuel validation and AI-enabled research. With no new company press release or fresh 8-K filing dated today, trading action is consistent with short-term profit-taking and volatility following a headline-driven surge in a high-beta name. (oklo.com)
2) Why the recent headline still matters (and why it can fade fast)
The NVIDIA/LANL collaboration reinforced the market narrative around nuclear-powered compute infrastructure, helping drive a sharp run-up into late last week. After a fast move higher, OKLO has been prone to air pockets as momentum traders exit, especially when there isn’t a follow-on catalyst like signed revenue contracts, regulatory milestones, or updated financial guidance. (oklo.com)
3) Positioning backdrop: shorts have been building
Bearish positioning has also been rising into the move. Reported exchange short interest was about 24.14 million shares as of March 31, 2026 (about 17.15% of the public float), up meaningfully versus the prior report—an overhang that can add day-to-day volatility as investors react to news and technical levels. (marketbeat.com)
4) What to watch next
Investors are likely to focus on whether the NVIDIA/LANL work yields concrete technical milestones and whether Oklo converts interest in nuclear-powered AI infrastructure into binding commercial agreements. Separately, traders will monitor additional SEC updates—following Oklo’s April 14, 2026 8-K on board/management changes—for any capital markets activity, governance changes, or other material events that could reset expectations. (sec.gov)