The TAIEX fell for the sixth straight day yesterday. Acer Inc paced declines on news that Acer's president Wang Chen-tang (王振堂) was quoted as saying shipments will fall 10 percent in the first quarter next year compared with the current quarter.
The TAIEX shed 8.48, or 0.15 percent, to 5,821.58.
The Taiwan Futures Index dropped 0.2 percent to 5,850.
Gainers and decliners were about even.
Acer fell NT$0.60, or 1.2 percent, to NT$48.10. Wang added that March quarter sales are still expected to be as much as 70 percent higher than they were in the first quarter of this year, according to AFX-Asia.
Taiwan Semiconductor Manufacturing Co (台積電), the world's largest maker of computer chips on a subcontracting basis, fell NT$1, or 1.5 percent, to NT$64.
Chinatrust Financial Holdings Co (中信金控) rose NT$0.80, or 2.5 percent, to NT$33.50. The bank gained after a Chinese-language newspaper cited Jeffrey Koo Jr. (辜仲諒), the chairman of Chinatrust's banking unit, as saying the company would push for another acquisition in Taiwan. Company spokesman Vanney Cho (卓長興) wouldn't disclose any details.
United Microelectronics Corp (UMC, 聯電), the world's second largest supplier of made-to-order chips, rose NT$0.10, or 0.3 percent, to NT$29.20.