Premarket movers: Nvidia is the biggest gainer among Mag 7 stocks. The chipmaker’s partner Hon Hai reported a better-than-expected increase in quarterly profit, signaling robust global demand for AI hardware. (Nvidia +1.2%, Alphabet +0.8%, Meta +0.7%, Tesla +0.5%, Amazon +0.4%, Apple little changed, Microsoft -0.8%) Cava (CAVA) jumps 13% after the restaurant chain operator reported store comp sales for the second quarter that beat the average analyst estimate. Analysts again note positive trends for its pomegranate glazed salmon. CoreWeave (CRWV) rallies 18% after the cloud-computing provider reported second-quarter results that beat expectations. Analysts are positive about the company’s margins and note that AI demand remains robust. ERock (EROC) is up 13% after the power systems firm reported revenue for the second quarter that beat the consensus estimate, and said Anthropic has agreed to buy 470 megawatts of onsite power equipment. H&R Block (HRB) is up 15% after the tax preparation company gave a full-year forecast that was stronger than expected. It also reported fourth-quarter results that beat expectations. Hyliion Holdings (HYLN) is up 23% after the company boosted its full-year revenue forecast from $10 million to $15 million. Lumentum (LITE) gains 8%. Analysts are positive on the maker of optical equipment after it reported fourth-quarter results that beat expectations and gave an outlook above analyst consensus. Super Micro Computer Inc. (SMCI) jumps 9% after giving a revenue forecast for the current quarter that topped analysts’ estimates, a sign the booming artificial intelligence market continues to bolster sales of the company’s servers. US Antimony Corp. (UAMY) falls 14% after the natural resource company cut its full-year outlook for gross revenue.