The benchmark Taiex Index rose 0.1 percent to 7,545.71.
Elan Microelectronics Corp. (2458) (2458 TT) increased 1.3 percent NT$42.15. The integrated circuit maker said April sales rose 21 percent to NT$565.16 million ($19.3 million), according to a statement to the Taiwan Stock Exchange.
Richtek Technology Corp. (6286) (6286 TT) surged 3.5 percent to NT$205, headed for the highest close since June 9. The integrated circuit maker was raised to neutral from sell at UBS AG, which cited a higher margin outlook.
TPK Holding Co. (3673) (3673 TT) lost 2.4 percent to NT$373. April sales fell 11 percent from a month ago to NT$11.86 billion, according to a statement on the company’s website.
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