The Taiwan Capitalisation Weighted Stock Index (TAIEX) covers all listed common shares on the Taiwan Stock Exchange. Dominated by semiconductor giant TSMC, which can represent 30%+ of the index, TAIEX is a key barometer for the global chip supply chain.
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All common stocks listed on the TWSE — over 900 companies. TSMC is by far the largest constituent, followed by MediaTek, Hon Hai, and Delta Electronics.
Regular session: 09:00–13:30 TST (Mon–Fri).
Launched on 5 January 1967 with base 100. Market-cap weighted. Maintained by the TWSE.