Shares in Europe and Asia tumbled on Tuesday, with benchmarks in Tokyo and Seoul sinking more than 3 per cent, after Nvidia and other artificial-intelligence -related shares pulled U.S. stocks lower.

The futures for the S&P 500 and the Dow Jones Industrial Average were down 0.3 per cent.

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 exports of computer chips, such as South Korea and Taiwan.

Also looming over the markets is the expected release Thursday of U.S. employment data that was delayed by the prolonged government shutdown.

Germany’s DAX fell 1.3 per cent to 23,288.28, while

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