🟢 Oklo is trading 4.20% up in pre-market after Groves reactor reaches first criticality in Texas

Oklo is trading 4.20% up at $43.96 after announcing on August 6 that its Groves Isotope Test Reactor achieved first criticality in Texas.

• The controlled, self-sustaining chain reaction occurred under the U.S. Department of Energy’s Reactor Pilot Program, making Groves the program’s first privately built reactor to reach criticality on private land.
• Investors are positioning ahead of Oklo’s Q2 2026 results before the August 7 open; the company’s 8:30 a.m. ET business update follows the earnings release.
• Broader equity futures are mixed, while the reactor milestone is the clearest company-specific catalyst for the pre-market gain.