Check out the companies making the biggest moves premarket: Revvity — Shares gained 7% after the life sciences company raised its full-year pro forma adjusted earnings per share guidance to $5.40-$5.45 from a previous range of $5.30-$5.40. Pfizer — The pharma giant traded along the flatline after reporting its third-quarter results. Pfizer earned 87 cents per share, excluding certain items, on revenue of $16.58 billion. Analysts polled by LSEG expected a profit of 73 cents per share on revenue of $15.87 billion. Zebra Technologies — The maker of barcode scanners and mobile computers used in retail and other industries fell over 6% even after it reported better-than-expected third-quarter numbers. Zebra earned $4.95 per share, excluding certain items, on revenue of $1.61 billion. Analysts polled by FactSet expected a profit of $4.89 per share on revenue of $1.57 billion. To be sure, free cash flow guidance of at least $1 billion for the year was marginally below a $1.02 billion estimate. Gartner — Shares slid over 6% despite its third-quarter results beating expectations. Gartner also issued better-than-expected earnings and revenue guidance for the full year. Yum Brands — The Taco Bell parent traded 1% higher after earnings for the third quarter beat analyst expectations. Earnings per share came in at $1.56, adjusted, while analysts polled by LSEG had forecast $1.49 earnings per share. Revenue of $2.05 billion was in line with the Street’s consensus. The company said Taco Bell has rebounded following the cyclospora outbreak linked to iceberg lettuce at Taco Bell. Palantir Technologies — Palantir shares were down nearly 8% despite the company’s third-quarter earnings topping Wall Street’s estimates. The company’s U.S. commercial revenue jumped 148% to $984 million, topping U.S. government revenue of $953 million. Palantir is also projecting about $2.65 billion in fourth-quarter revenue and $8.53 billion for full-year 2026. Apple — Apple shares were down nearly 4% in the premarket after the tech giant reported disappointing margin forecast and iPad sales in the fiscal fourth quarter missed the Street’s estimates. — CNBC’s Darla Mercado and Fred Imbert contributed reporting.