Asian shares fall as Nvidia, other tech companies are walloped by U.S. controls on AI chips

World shares were mostly lower Wednesday as Nvidia and other technology companies were walloped by tighter U.S. controls on exports of advanced computer chips used for artificial intelligence. The future for the S&P 500 skidded 1.2% while that for the Dow Jones Industrial Average lost 0.6%. Chip maker Nvidia’s shares fell 6.3% in after-hours trading after it…

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