Check out the companies making the biggest moves midday: Petco Health & Wellness — The pet store and veterinary services provider surged 22% after raising its full-year adjusted EBITDA guidance. Second-quarter earnings per share topped analyst consensus estimates as compiled by FactSet. Celsius — Shares gained more than 4% after PepsiCo upped its stake in the energy drink company to 11%. NeoGenomics — The cancer diagnostic testing company rallied 24% after NeoGenomics said it received a favorable ruling in a patent lawsuit against Natera . Privia Health — Shares gained about 6% after the company, which offers administrative support to physicians, raised its full-year guidance. Privia now expects adjusted EBITDA of $113 million to $116 million, up from a previous range of $104 million-$110 million. Iren — The vertically integrated data center business rallied 19% after winning Nvidia “Preferred Partner” status, obtaining nearly $100 million in financing to buy Nvidia GB300 equipment and fiscal fourth-quarter adjusted EBITDA topped Street estimates, according to FactSet. Alibaba — The Chinese e-ecommerce giant saw shares rising more than 13% after the firm created a more advanced chip as it looks to fill the gap left by Nvidia running into issues around selling its chips in China. Nvidia shares fell more than 3%. Caterpillar — The industrial giant’s shares lost 4% after the company warned it could take a $1.5 billion to $1.8 billion hit this year due to tariffs. Dell Technologies — The tech stock slipped nearly 8% after the company gave third-quarter earnings per share guidance that was below Wall Street’s expectations. Dell still beat on its top and bottom lines for the latest quarter, however. Ulta Beauty — The cosmetics and beauty products retailer surged more than 6% after raising its full-year earnings and revenue forecast. Ulta expects full-year revenue of $12 billion to $12.1 billion, above the $11.7 billion estimate from analysts polled by LSEG. Ulta expects full-year earnings of $23.85 to $24.30 per share, while analysts were expecting $23.65. Affirm Holdings — The buy now, pay later fintech provider rallied 11% after fiscal fourth-quarter earnings and revenue beat analysts’ estimates. Affirm earned 20 cents per share on revenue of $876 million, while analysts polled by LSEG were looking for 11 cents in earnings per share on $837 million in revenue. Autodesk — Shares rallied 8% following a strong second-quarter earnings report. The software firm earned $2.62 per share, excluding items, on $1.76 billion in revenue, while analysts polled by LSEG penciled in $2.45 per share and $1.73 billion in revenue. Autodesk also posted upbeat guidance for the current quarter and full year. SentinelOne — The cybersecurity stock jumped 5% after posting second-quarter adjusted earnings of 4 cents per share, beating the 3 cents analysts polled by LSEG had penciled in. The company’s $242 million in revenue was in line with expectations. SentinelOne’s current-quarter revenue guidance was above LSEG’s consensus, and the company also raised its revenue guidance range for the fiscal year from previous estimates. Ambarella — Shares surged 18% after the fabless semiconductor design company lifted its outlook because of strong artificial intelligence demand, and reported a blowout second quarter. The company expects revenue of $379 million in fiscal 2026, topping the $350 million consensus estimate from LSEG. — CNBC’s Yun Li, Scott Schnipper, Alex Harring, Michelle Fox, Sarah Min and Lisa Han contributed reporting.
