Taiwan Stock Market Surpasses UK to Join the $4 Trillion Club, Powered by AI Chip Boom and TSMC

According to Bloomberg data, Taiwan's total stock market capitalization stood at $4.13 trillion as of Tuesday, surpassing the UK's $4.09 trillion. The milestone reflects the explosive surge in demand for AI semiconductors.

TSMC Lifts Taiwan's Market to New Heights

TSMC remains the undisputed driver of this rally. The world's largest contract chipmaker reported Q1 revenue of $35.6 billion — a 35% year-over-year increase and the highest quarterly revenue in its history. Demand for advanced chips used in AI servers significantly exceeded expectations, fueling the outperformance.

TSMC's dominance within Taiwan's equity market is unparalleled. With a single stock accounting for more than 30% of the TAIEX's total market cap, TSMC's earnings and share price movements are effectively synonymous with the performance of Taiwan's broader market. The timing of Taiwan's overtaking of the UK — coinciding directly with TSMC's Q1 earnings release — makes this milestone essentially a 'TSMC effect.'

What the UK Overtake Signals

The UK market has long maintained its stature as a global financial hub. The London Stock Exchange (LSE) is home to major global blue-chips such as HSBC, Shell, and Unilever, which have kept it firmly among the world's top equity markets. However, the UK's financial competitiveness has eroded since Brexit, while Taiwan has emerged as a primary beneficiary of AI infrastructure investment — rapidly closing the gap.

Taiwan is now estimated to rank approximately 7th globally by stock market capitalization — trailing only the US, China, Japan, India, Canada, and France. The semiconductor powerhouse has displaced the UK in this global ranking.

Goldman Sachs Repositioning Deserves Attention

Against this backdrop, Bloomberg reported that Goldman Sachs has initiated long positions in Taiwan and South Korea while simultaneously opening short positions in South Asian and Southeast Asian markets more vulnerable to declining oil prices. The strategy is widely interpreted as a clear bifurcation trade — going long on AI supply chain beneficiaries (Taiwan and South Korea) against commodity-dependent economies.

Where Does South Korea Stand?

South Korea's KOSPI briefly surpassed Taiwan during a rally in February, climbing to 8th globally, but the gap widened again following a correction in March. South Korea is currently estimated to sit around 9th place. With Samsung Electronics and SK Hynix firmly established as key players in HBM (High Bandwidth Memory) within the AI semiconductor supply chain, the H2 earnings season is shaping up to be a critical inflection point.

AI is reshaping semiconductor demand, and semiconductors are redrawing the global equity landscape. Taiwan's overtaking of the UK is perhaps the clearest illustration yet of how fast that transformation is unfolding.