Shares retreated Friday in Asia, with benchmarks in Japan, Hong Kong and South Korea falling more than 2% after Wall Street indexes fell sharply on doubts over the frenzy around artificial-intelligence technology.

Asian shares were mostly lower on Thursday after U.S. stock indexes drifted to a mixed finish, with the S&P 500 closing just an iota higher. In Tokyo, the Nikkei 225 edged 0.2% higher to 38,198.96. Hong Kong's Hang Seng sank 0.

U.S. stock indexes are rising Wednesday after a four-day losing streak knocked Wall Street off its all-time high and threw some of its brightest stars into reverse. The S&P 500 was up 0.8% in morning trading.