Taiwan and South Korea are climbing the ranks of global stock markets, powered by artificial intelligence demand that's reshaping which countries dominate equity investing worldwide.
The shift centers on semiconductor manufacturing. Taiwan Semiconductor Manufacturing Company (TSMC) and South Korean chipmakers like Samsung Electronics produce the processors that power AI systems. As companies worldwide pour billions into AI infrastructure, demand for these chips has surged. Both nations' stock markets have expanded rapidly to reflect this economic reality.
Taiwan's market capitalization has grown substantially, driven largely by TSMC's dominance in chip production. Samsung and other South Korean tech giants have similarly benefited from increased orders and valuations. This growth has allowed these markets to overtake several long-established Western stock markets in total value.
For investors, this reshuffling matters. Many traditional index funds weight countries by market capitalization. As Taiwan and South Korea climb, their representation in global index portfolios increases automatically. This means investors in broad international index funds now hold larger positions in semiconductor-heavy Asian markets than they did even two years ago.
The concentration risk cuts both ways. Investors gain exposure to the most dynamic sector of the global economy right now. But both markets lean heavily on chip manufacturing and related industries. If AI spending slows or chip demand cools, these markets face greater downside than more diversified economies.
Investors who hold passive index funds tracking global stock markets will see this shift reflected in their holdings without taking action. Those managing active portfolios should review whether their international allocations match their risk tolerance and time horizon. The traditional Western dominance of global equity markets is genuinely changing, not temporarily fluctuating.