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

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