TSMC held 42.6% of TWSE listed market value at end-2025
This statistic turns Taiwan’s stock-market concentration into one number. TSMC alone represented 42.6% of all listed-company market capitalization on the TWSE at end-2025. It also made up 61.4% of the top-30 market-cap group, showing how one company dominates the market’s headline valuation structure.
TWSE market capitalization excludes special stock in the top-30 table. TSMC investor data is included as issuer context, not as the date-matched input for the 2025 share.
Use TWSE Fact Book 2026 end-2025 market caps. TSMC share equals TSMC market capitalization divided by all listed-company market capitalization.
Taiwan Chip-Firm Market Cap Versus Gross Domestic Product, 2025
Five listed chip firms equaled 156.2% of Taiwan’s implied gross domestic product in 2025.
TSMC Taiwan and Overseas Fab Footprint, 2025
Annual report lists 9 Taiwan fabrication plants (fabs), 5 overseas, and 17 million+ wafers.
TSMC Income Tax Expense Versus Taiwan Tax Revenue, 2025
TSMC’s NT$326.3B tax expense was 28.4% of profit-seeking enterprise income tax.