BANGKOK – Asian shares tumbled on Tuesday, with benchmarks in Tokyo and Seoul sinking more than 3%, after Nvidia and other artificial-intelligence -related shares pulled U.S. stocks lower.

U.S. futures dropped, with the contract for the S&P 500 down 0.6% while the future for the Dow Jones Industrial Average was down 0.4%.

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Computer chip giant Nvidia, at the center of the craze over AI , is due to report its earnings on Wednesday. Worries that stock prices of such companies have shot too high have roiled world markets recently, with big swings in places that rely heavily on trade in computer chips such as South Korea and Taiwan.

Also hanging over the markets is the release due Thursday of U.S. employment data that was delayed by the prolonged government shutdow

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