Stock market today: Wall Street resumes its tumble as Dow drops 500

NEW YORK (AP) — And back down goes Wall Street. U.S. stocks are resuming their slide Thursday, led by the market's AI superstars that are now feeling the painful downside of big expectations. The S&P 500 was down 1. NEW YORK (AP) — And back down goes Wall Street. U.S. stocks are resuming their slide Thursday, led by the market's AI superstars that are now feeling the painful downside of big expectations. The S&P 500 was down 1.5% in early trading, erasing its mini-recovery from the prior day that helped it claw back some of its sharp drop over recent…