道指开盘跌 0.1%，标普 500 跌 0.2%，纳指跌 0.4%

Caterpillar fell 2.3%, as the company raised its annual tariff cost expectations. Dell dropped 7.3%, with Q3 profit forecasts falling short of expectations. Design software company Autodesk rose 11.4%, exceeding Q2 performance expectations. Cybersecurity company SentinelOne increased by 8.8%, raising its full-year revenue guidance for fiscal year 2026. Alibaba rose 7.8%, with accelerated growth in its cloud business and the development of a more advanced AI chip