Check out the companies making the biggest moves midday: Photronics — The maker of flat panel display components rallied more than 37% on better-than-expected results for its fiscal fourth quarter. Photronics' first-quarter earnings guidance also exceeded estimates. Maplebear — The grocery delivery platform stumbled 6% after Amazon announced in a blog post that its same-day perishable grocery delivery service, a direct competitor to Instacart, has expanded to more than 2,300 cities and towns. Amazon said that since August, it has grown its perishable selection available for same-day delivery by over 30%, and expects continued expansion to more areas in 2026. Meanwhile, a separate study released Tuesday found that Instacart uses artificial intelligence pricing tools that caused price discre

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