They were mostly higher Friday after Taiwan Semiconductor Manufacturing Co., a major chip producer, said its revenue in July soared nearly 45% from a year earlier.
Wall Street posts gains as it closes its wild, whipsaw week. More tests loom next week
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TSMC also announced plans for a second plant in Japan earlier this month, with production expected to start in about three years.
Taiwan giant chipmaker TSMC opens first plant in Japan as part of key global expansion
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