TSMC Shares Hit Record NT$2,345, Propel Taiex Past 42,000

TSMC is the most heavily weighted company in Taiwan’s stock market and the global leader in advanced semiconductor foundry services, making its share-price moves a key driver of the benchmark index and the total market value of listed companies. As generative AI fuels demand for high-end chips, investors remain bullish on TSMC’s advanced process and packaging businesses, which have become a major pillar of the technology-stock rally.

On July 20, 2026, a sharp rise in TSMC’s U.S.-listed American depositary receipts helped its Taipei shares break above NT$2,500 for the first time in intraday trading, pushing the Taiwan Stock Exchange Weighted Index and the market capitalization of listed companies to record highs. Analysts said AI investment momentum remained strong, but cautioned that investors should watch for volatility at elevated levels and shifts in international capital flows.

TSMC (2330) is the largest stock by weighting in Taiwan’s equity market and a critical supplier of advanced manufacturing processes for global AI chips, giving its shares significant influence over the broader index. Its ADRs have long traded at a premium to its Taipei-listed shares because they are easier for foreign investors to trade and are included in indexes. The narrowing gap suggests domestic investors, including retail buyers and local investment trusts, are gaining pricing influence. It also reflects stronger market confidence in revenue growth across the AI supply chain.

Bloomberg data showed TSMC’s average ADR premium fell to 13.7% in May 2026 from 26% in December 2025, marking a fifth consecutive monthly decline and a two-year low. On June 2, TSMC rose NT$25 to a record close of NT$2,380, pushing Taiwan’s benchmark stock index to a record close of 45,557.31. Its Taipei-listed shares have gained more than 50% this year, outpacing the ADRs’ nearly 40% advance.

TSMC’s advanced manufacturing technology and global demand for AI chips have made it the main force behind Taiwan’s stock market rally past 40,000 points. The Financial Supervisory Commission is also advancing the “TSMC clause,” which eases limits on ETFs’ holdings of a single stock. The change reduces regulatory obstacles for funds tracking large index heavyweights, making passive inflows an important source of market support.

TSMC shares recently reached a record high and are moving toward NT$2,330 apiece, helping the weighted index break above 40,000 points. The impact of ETF portfolio adjustments continues to build. The market will look to corporate fundamentals and earnings data due in May to gauge whether the rally fueled by AI enthusiasm and passive buying can continue.