The sell-off for winners of the artificial-intelligence boom deepened and yanked stock markets lower worldwide while tensions escalated in the Middle East as the US launched more airstrikes at Iran in response to the killing of American troops.

NEW YORK (AP) — The sell-off for winners of the artificial-intelligence boom deepened Friday and yanked stock markets lower worldwide. Oil prices, meanwhile, continued to jump…

US stock market today: Fresh selling in computer chipmakers and other companies that have benefited from the artificial intelligence boom dragged global equity markets lower on…