South Korean and Taiwanese stock markets have seen historic rallies this year driven by surging demand for artificial intelligence chips and infrastructure.
This growth represents a critical tension between equity gains and financial stability. While investors are chasing high-growth opportunities, the expansion is being funded by significant borrowing, creating a debt-fueled environment that may be unsustainable if the AI bubble corrects.
South Korean equities on the KOSPI have increased by 28% year-to-date [1]. Meanwhile, the Taiwanese index has seen a 32% increase over the same period [1]. Business Insider staff said South Korean and Taiwanese equities have surged more than 30% this year as investors chase AI-driven growth [2].
However, this rally is accompanied by a sharp increase in corporate borrowing. Since 2026, South Korean firms have added $15 billion in net corporate debt [3]. Taiwanese firms have added $10 billion in corporate debt during that same timeframe [3].
Matt Phillips said tech giants are loading up on debt to fund AI projects, a trend that is spilling over into Asian markets [4]. This reliance on borrowed capital is creating volatility in other financial sectors.
Dara-Abasi Ita said the AI chip frenzy is driving up yields on South Korea's government bonds, reflecting investor concerns about rising debt [5]. The pressure on government bonds suggests that the equity boom is not without systemic risk, as the cost of borrowing rises, the burden on these debt-heavy companies increases.
The trend reflects a broader global pattern where the race for AI supremacy is prompting companies to prioritize rapid expansion over balance sheet caution. In both Seoul and Taipei, the rush to build the next generation of semiconductors has turned the regional markets into a focal point for both massive wealth creation and potential financial instability.
“South Korean and Taiwanese equities have surged more than 30% this year as investors chase AI-driven growth.”
The divergence between soaring stock prices and stressed bond markets indicates a growing risk premium in East Asia. While the AI boom provides a fundamental catalyst for growth, the reliance on $25 billion in combined new debt since 2026 suggests that these markets are highly sensitive to interest rate fluctuations. If the projected AI returns do not materialize quickly, the high debt loads could trigger a systemic correction across both equity and sovereign debt markets.
