Investopedia·2025-10-30 21:25Core Insights - Meta Platforms experienced a significant decline in shares due to rising artificial intelligence costs and a $16 billion one-time tax charge, leading to a 11.3% drop in stock price [3][8] - Chipotle Mexican Grill's stock fell 18.2% after reporting lower-than-expected revenue and reducing its full-year forecast, particularly noting a decline in younger customers [4] - EMCOR Group's shares dropped 16.6% despite exceeding sales and profit expectations, as operating margins decreased and full-year guidance was narrowed [5] - eBay's shares slid 15.9% after surpassing revenue and profit estimates but providing disappointing guidance for the holiday quarter [6] - C.H. Robinson Worldwide's stock surged 19.7% due to successful AI integration that improved operational efficiency and reduced costs [9] - Cardinal Health's shares rose 15.4% after beating sales and profit estimates, driven by strong demand for specialty medicines [10] - Moderna's shares increased by 13.9% following reports of potential partnership talks with a large pharmaceutical company [11]