Taiwan's Stock Exchange Chair Knows the AI Rally Will Not Last Forever, and Is Racing to Prepare

Taiwan's stock market has had a remarkable run this year, and Sherman Lin, chair of the Taiwan Stock Exchange, is under no illusion about why. The benchmark TAIEX index is up roughly 55 percent year to date, and TSMC alone accounts for about half of that gain while making up some 40 percent of the index's total weighting. Taiwan overtook rivals to become the world's fifth largest stock market by total value in May 2026, trailing only the United States, mainland China, Japan, and Hong Kong. It is an extraordinary result built substantially on the fortunes of a single company.

That concentration is precisely what worries Lin, even as he celebrates the milestone. A market that rises and falls with one stock is fragile in a way that a genuinely broad based exchange is not, and Lin has been candid that Taiwan's lasting edge cannot rest on having one or two globally dominant companies. His argument is that the island's real strength is structural, a deep, technology oriented economy where advanced manufacturing and engineering talent run far wider than any single firm, TSMC included.

Hunting for the next TSMC, and the ones nobody has noticed

Lin's strategy for diversifying the exchange runs in two directions at once. One is chasing companies positioned across the broader AI supply chain, the equipment makers, component suppliers, and specialized manufacturers that benefit from the same demand wave lifting TSMC without carrying its single stock risk. The other is what Lin describes as hunting for hidden champions, profitable, well run companies that have simply gone unnoticed by investors focused on the index's headline names. Surfacing those firms would give the market more legs to stand on than TSMC alone can provide.

Borrowing a governance playbook

Alongside the hunt for new listings, Taiwan has launched a program called Power Up aimed at strengthening corporate governance across listed companies, explicitly modeled on the shareholder value campaigns Japan and South Korea have run in recent years. Those campaigns have been credited with pushing companies in both countries to unlock value for shareholders through better capital allocation and disclosure, and Lin is betting a similar push can make Taiwan's broader listed universe more attractive to investors who might otherwise only care about TSMC.

The numbers behind the ambition

The scale of the challenge is visible in Taiwan's IPO market. The exchange raised 3.3 billion dollars across 70 initial public offerings last year, a record for the local market but a fraction of the 37.4 billion dollars Hong Kong raised across 119 deals over the same period. Taiwan's market also still closes early, at 1:30 in the afternoon, and regulators have already rejected one of Lin's earlier proposals to extend trading hours, a reminder that not every reform he wants is fully within his control.

A window Lin does not think stays open forever

Perhaps the most telling part of Lin's outlook is his sense of urgency. He has suggested Taiwan's current AI driven opportunity carries something like a three year window, a candid admission that today's momentum will not last indefinitely without real structural change underneath it. That timeline frames everything else, the push into the AI supply chain, the hidden champions search, the governance reforms, as a race to broaden the market's foundation while conditions are still favorable.

What it means for the region

A more diversified, better governed Taiwan Stock Exchange would matter well beyond its own borders. Southeast Asian investors already hold significant exposure to Taiwanese tech through TSMC and its supply chain, and a broader roster of investable Taiwanese companies would give the region's funds and retail investors more ways to participate in Asia's AI boom than one dominant chipmaker alone can offer. Whether Lin's three year window is enough time to pull that off is the question the rest of Asia's markets are also watching closely.