Check out the companies making the biggest moves midday: Denny’s — The diner chain rallied 50% after it announced it would be acquired by private equity firm TriArtisan Capital Advisors for $620 million, or $6.25 per share, in cash. The deal represents a 52% premium from Monday’s close and is expected to close in the first quarter of next year. Hertz — The car rental company and meme stock surged more than 42% on much better-than-expected third-quarter results . Hertz posted a profit of 12 cents per share, excluding certain items, on revenue of $2.48 billion. Analysts polled by FactSet had forecast earnings of 3 cents per share on revenue of $2.39 billion. Zoetis — The animal health company tumbled 12% and hit a 52-week low after lowering its full-year revenue guidance. Zoetis now anticipates revenue in the range of $9.4 billion to $9.475 billion, compared with its prior guidance of $9.45 billion to $9.6 billion. Analysts surveyed by FactSet were expecting to hear $9.51 billion. Uber Technologies — The ride-sharing company fell 7% after saying fourth-quarter adjusted EBITDA will range between $2.41 billion and $2.51 billion versus $2.47 billion expected by analysts polled by FactSet. Third-quarter revenue beat Wall Street’s expectations, at $13.47 billion versus the $13.28 billion expected, per LSEG. Wingstop — The fast food chain shares soared nearly 14% after the company reported same-store sales growth of 5.6%. That came in much higher than a 3.2% growth estimate per StreetAccount. Sanmina — Shares of the optical and electronic products manufacturer jumped more than 16% after fiscal fourth-quarter results beat Street estimates and its first-quarter earnings forecast was also stronger than expected. Lattice Semiconductor — The semiconductor company tumbled more than 8% after its third-quarter earnings failed to impress investors. Lattice earned 28 cents per share on a non-GAAP basis, matching a FactSet estimate. Norwegian Cruise Line Holdings — The cruise operator dropped about 14% after third-quarter revenue of $2.94 billion missed the $3.02 billion expected by analysts surveyed by FactSet. Adjusted earnings came in above expectations. Shares of Royal Caribbean and Carnival both fell 5% and 8%, respectively, in sympathy. Yum Brands — The restaurant operator’s shares rose nearly 7% after it reported quarterly earnings and revenue growth , fueled by strong demand at Taco Bell and improved U.S. sales for KFC. The chain announced plans to review strategic options for Pizza Hut. Sarepta Therapeutics — Shares plunged 34% after the biotechnology company said a late-stage study testing two gene-targeted therapies for Duchenne muscular dystrophy did not meet the main goal . Palantir Technologies — Shares dropped 7% after Palantir fiscal fourth-quarter earnings and revenue beat estimates and it raised its current-quarter and full year revenue guidance. Expectations were high going into the report however, with Palantir jumping 20% in the past month and nearly 30% in the past three. Henry Schein — The medical products provider jumped about 10% on the back third-quarter adjusted earnings of $1.38 per share that topped the $1.28 FactSet consensus estimate. Revenue was $3.34 billion compared to the $3.28 billion expected by analysts and the company also raised its full-year guidance. Upwork — Shares surged 7% after the freelance work platform’s third-quarter earnings surpassed expectations. Upwork earned an adjusted 36 cents, topping a consensus estimate of 29 cents expected by analysts polled by FactSet. Revenue of $201.7 million exceeded the $193.3 million average estimate. — CNBC’s Fred Imbert, Lisa Han, Sarah Min, Sean Conlon and Yun Li contributed reporting.