Asian markets mixed as AI worries deepen after Alphabet's plunge

Asian markets traded mixed Friday as concerns over artificial intelligence deepened following Alphabet's stock plunge, which dragged U.S. indexes lower. Japan's Nikkei fell 2.6%, while South Korea's Kospi dropped 5.4% on chipmaker losses. Alphabet shares tumbled 12.6%, their worst day in over 20 years, pulling the S&P 500 down 0.3% and the Nasdaq 1.4%. The Bank of Japan concluded its policy meeting with no expected action after raising rates to 1.25% last month. Hong Kong's Hang Seng rose 1.2%, while Australia's S&P/ASX 200 gained 0.5%. U.S. crude climbed to $104.86 a barrel, and the 10-year Treasury yield fell to 4.94%.