Wall Street futures trade mixed today: 5 things to know before Wall Street opens

US stock futures were mixed on Thursday as Wall Street's record-setting advance ran into a fresh test from the most crowded corner of the AI trade. Dow futures added 123 points or 0.3% and S&P 500 contracts were little changed, while Nasdaq 100 futures fell 133 points or 0.5% after Western Digital and SanDisk slid despite powerful earnings and sales growth.