The benchmark Taiex Index rose 0.1 percent to 7,484.01.
Pegatron Corp. (4938) (4938 TT) gained 2.5 percent to NT$42.60. April sales more than doubled for the electronics maker, according to a company statement.
Ruentex Development Co. (9945) (9945 TT) dropped 1.7 percent to NT$42.25. April sales fell 32 percent from a year earlier to NT$403 million, according to a statement to the Taiwan stock exchange.
Ta Chong Bank Ltd. (2847) (2847 TT) lost 3.3 percent to NT$11.65, the most since April 17. April sales slid 8.6 percent to NT$660 million from a year earlier, it said in a statement to the stock exchange.
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