Introduction
The AI boom is not only a technology story. It is also a geopolitical story. The global race to build AI data centres, train large models, and secure advanced chips has turned semiconductors into instruments of national power. In this new environment, Taiwan and South Korea have become central market winners because they control critical parts of the AI hardware supply chain.
Taiwan’s strength comes mainly from TSMC, the world’s most important advanced chip foundry. South Korea’s strength comes from Samsung Electronics and SK Hynix, especially in memory chips and high-bandwidth memory, or HBM, which are essential for AI servers. As investors realised that AI depends not only on American software companies but also on Asian hardware giants, capital flowed strongly into Taipei and Seoul.
1. AI turned chips into strategic infrastructure
AI models need massive computing power. That means demand for advanced processors, memory chips, packaging, substrates, lithography, and data-centre hardware has surged. Semiconductors are now viewed like oil once was: a strategic resource that determines economic and military competitiveness.
This is why Taiwan and South Korea benefited. They are not just export economies; they are semiconductor powers. Their companies sit inside the most sensitive layer of the global AI supply chain.
2. Taiwan rose because TSMC became the AI factory of the world
TSMC is central to the AI boom because it manufactures advanced chips for leading global technology companies. In April 2026, Reuters reported that TSMC expected second-quarter revenue of $39 billion to $40.2 billion, compared with $30.1 billion a year earlier, and said AI demand remained “extremely robust.”
TSMC also reported first-quarter 2026 revenue of T$1.134 trillion, or about $35.71 billion, a 35% year-on-year increase, helped by strong demand for AI applications.
Geopolitically, this gives Taiwan unusual importance. Even though Taiwan is a small economy, its semiconductor role makes it indispensable to the US, Europe, Japan, and global AI companies.
3. Taiwan’s stock market gained from the “silicon shield”
Taiwan’s semiconductor dominance has often been called a “silicon shield” — the idea that the world has a strong interest in Taiwan’s stability because of its chip industry. The AI boom strengthened this perception.
As of May 2026, Taiwan reportedly surpassed India to become the world’s fifth-largest stock market by total market capitalization, driven largely by the rally in TSMC and AI-linked technology shares. This was not just a normal market rally. It reflected a geopolitical repricing: investors began treating Taiwan as a core infrastructure provider for the AI age.
4. South Korea rose because AI needs memory, not only processors
The AI story is often told through GPUs, but AI systems also require enormous memory bandwidth. This is where South Korea became critical. SK Hynix and Samsung are key players in memory chips, especially HBM used in AI servers.
Reuters reported that SK Hynix expected the HBM market to grow by more than 30% annually over the next five years, supported by investments from Big Tech and AI companies. This made Korean chipmakers essential to AI infrastructure. If Taiwan is the foundry engine of AI, South Korea is one of its memory engines.
5. SK Hynix became a symbol of Korea’s AI-market rise
SK Hynix has become one of the clearest market examples of the AI tailwind. Reuters reported in May 2026 that SK Hynix was nearing a $1 trillion market value, after its shares rose more than 200% in 2026, following a 274% increase in 2025. Its market cap was around $942 billion, up from under $100 billion just 16 months earlier.
That kind of rise shows how strongly global investors are valuing AI hardware supply chains. It also shows how South Korea’s market has become tied to the global AI buildout.
6. The KOSPI rally showed Korea’s market concentration in AI hardware
South Korea’s broader market also benefited sharply. Reuters reported that the KOSPI crossed the 7,000 mark for the first time in May 2026, closing at 7,384.56, as Samsung Electronics jumped 14.4% and reached a $1 trillion market capitalization. SK Hynix rose 10.6% in the same rally, and together Samsung and SK Hynix accounted for 44% of the KOSPI’s total value.
This shows both strength and risk. Korea’s market gained because it has exactly what AI needs: memory and chip manufacturing. But it also became heavily dependent on a few semiconductor giants.
7. US-China rivalry redirected capital toward trusted chip allies
The geopolitical backdrop matters deeply. As the US restricts China’s access to advanced AI chips and semiconductor technology, investors are placing greater value on countries inside the US-aligned technology network. Taiwan and South Korea are both crucial US partners in the semiconductor ecosystem.
This does not remove risk. Taiwan faces China-related security risks, and South Korea must manage trade exposure to both China and the US. But in the AI race, their alignment with the advanced-chip supply chain made them more attractive to global capital. The result is a new Asian market map: Taiwan and Korea are no longer seen only as export-led manufacturing economies. They are seen as strategic AI infrastructure hubs.
Conclusion
Taiwan and South Korea rose on the AI tailwind because AI changed the meaning of semiconductors. Chips are no longer just components inside devices; they are the foundation of economic power, military capability, cloud infrastructure, and technological sovereignty.
Taiwan gained because TSMC sits at the heart of advanced AI chip manufacturing. South Korea gained because Samsung and SK Hynix supply the memory muscle needed by AI servers. The numbers are striking: TSMC’s AI-led revenue growth, Taiwan’s rise to the fifth-largest stock market, SK Hynix’s near-trillion-dollar valuation, and Samsung’s trillion-dollar milestone all show how powerful the AI hardware cycle has become.
From a geopolitical perspective, the message is clear: the AI age is not only being shaped in Silicon Valley. It is also being manufactured in Hsinchu, Seoul, and the wider East Asian semiconductor corridor.
[The Billion Hopes Research Team shares the latest AI updates for learning and awareness. Various sources are used. All copyrights acknowledged. This is not a professional, financial, personal or medical advice. Please consult domain experts before making decisions. Feedback welcome!]
