Taiwan stocks fell 0.8 percent on Tuesday to extend losses to four straight sessions, dragged down by chip makers such as TSMC after Advanced Micro Devices slashed its outlook for second-quarter revenue. The main TAIEX index dropped 58.61 points to 7,251.35, its lowest closing level since June 28.
Among the top losing sectors, chipmakers fell 1.6 percent and panel makers 2.2 percent, while electronics and machinery both lost over 1 percent.
TSMC, the world's No 1 contract chipmaker, fell 1.1 percent. Rival Intel Corp's decision to buy into ASML, a major supplier of chip making equipment to both TSMC and Intel, also weighed on TSMC.
Apple's major supplier, Hon Hai Precision, sank 2 percent. The Taiwan dollar firmed slightly to trade at T$29.947. Foreign investors were net sellers on Monday, bringing their total selling to T$3.829 billion this month.