AMD, Intel among market cap stock movers on Thursday

Major U.S. equities experienced significant price dispersion during Thursday trading across various market capitalization tiers, driven by analyst rating actions, corporate updates, and sector-wide sentiment. Among mega-cap semiconductor and hardware names, Advanced Micro Devices (AMD) fell approximately 2.79% to 3.08% during the session, despite Piper Sandler initiating research coverage on the chipmaker with an Overweight rating citing strong growth prospects. Semiconductor and tech peers mirrored the broader volatility, with Intel sliding roughly 4.55% to 4.68% after Piper Sandler started coverage at Neutral citing valuation concerns, while Lam Research dropped nearly 5% and Arm fell over 2.5%. In contrast, Apple outperformed the broader tech complex by climbing more than 3.08%. Significant volatility also hit large- and mid-cap stocks, where Cooper Companies tumbled between 12.93% and 14.53% following a downgrade from Baird due to weak sales, and Navan plunged over 22% despite exceeding Q2 earnings expectations. Broad market action reflected heightened sensitivity to analyst reassessments and selective rotations across technology and industrial names.