Check out the companies making the biggest moves premarket: Super Micro Computer — Shares surged about 17% after the server maker reported preliminary fourth-quarter results that featured much stronger profitability than investors had expected, offsetting revenue that came in near the low end of its guidance. Dell Technologies , Hewlett Packard Enterprise — Super Micro Computer’s surge spilled over to its server peers, with the group as a whole boosted by the better-than-expected preliminary results. Dell and Hewlett Packard Enterprise were both up more than 4% before the bell. Pegasystems — The software company tumbled more than 14% after it reported second-quarter results that fell short of Wall Street expectations. Adjusted earnings came in at 35 cents per share, below the 43 cents per share analysts polled by FactSet had projected. Oklo , X-Energy — The nuclear reactor suppliers were up in premarket trading after a Bloomberg report that the companies are joining an effort by President Donald Trump’s administration to speed up nuclear power plant development for AI data centers. X-Energy rose 4%, while Oklo was higher by more than 3.5%. Rocket Lab — Shares jumped by 4% after the company won a $266 million contract from the U.S. Air Force. The contract includes the launch of 12 suborbital vehicles and is expected to be completed by the end of 2028. Cal-Maine Foods — The egg producer was off more than 4.5% after it reported a surprise loss of 76 cents per share in its fiscal fourth-quarter earnings report. Analysts polled by FactSet were expecting earnings of 8 cents per share. The company blamed egg prices that were at historically low inflation-adjusted levels during the fiscal period for the loss. GE Vernova — Shares declined more than 7% despite the company reporting a beat on revenue in the second quarter and raising its full-year guidance. CEO Scott Strazik said in a press release that the company’s $176 billion backlog will permit continued revenue growth and margin expansion. AT & T — The telecommunications company rose 3% despite mixed results in its second-quarter earnings report. AT & T delivered adjusted earnings of 65 cents per share, above the FactSet consensus for 59 cents per share. Philip Morris International — The tobacco company slipped 0.5% after it reported a weaker-than-expected forecast for the third quarter. Philip Morris projects earnings of between $2.20 to $2.25 per share in the current quarter, below analysts polled by FactSet’s expectation for $2.42. The company for the second quarter beat expectations on both its earnings and revenue. CME Group — Shares were higher by 1% after the exchange reported earnings and revenue its second-quarter financial report above expectations. CME also said in a press release that the first half of 2026 was its best first six months of a year ever. — CNBC’s Yun Li contributed reporting
Stocks making the biggest moves premarket: SMCI, GEV, RKLB
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