The global stock market is undergoing a dramatic transformation, with the AI boom acting as a powerful force that is reshuffling the pecking order of equity markets. This shift is particularly striking in the case of South Korea and Taiwan, which have surged past several long-established Western bourses to become some of the world's largest stock markets. What makes this phenomenon even more fascinating is the speed and narrowness of the drivers behind it. Typically, market reshuffles occur every cycle, but they are usually driven by domestic booms, big IPOs, or years of outperformance. However, in the case of South Korea and Taiwan, the rally has been driven by an extraordinary concentration of capital into a handful of AI-linked firms. This raises a deeper question: what does this concentration of market power in a few AI-linked firms imply for the future of global stock markets?
One thing that immediately stands out is the role of AI hardware in propelling the markets of South Korea and Taiwan. The transition toward agentic AI has triggered an explosion of so-called token demand, creating a supply shortage that is driving extraordinary pricing power for chipmakers. This has led to a situation where TSMC alone now accounts for more than 40% of Taiwan's market capitalization, while Samsung Electronics and SK Hynix together make up a record 42.2% of South Korea's Kospi index. In my opinion, this concentration of market power in a few firms is a cause for concern, as it could lead to a lack of diversity and innovation in the market.
What many people don't realize is that this concentration of market power is not unique to South Korea and Taiwan. There are other markets, such as Saudi Arabia and Denmark, where benchmark indexes are heavily dominated by a single firm. For example, Danish stocks came under pressure as worries grew over slowing demand for obesity treatments produced by Novo Nordisk, while Saudi Arabia's market, which is largely driven by Saudi Aramco, weakened alongside falling crude prices. This raises a broader question: how can we ensure that the benefits of the AI boom are shared equitably across the global economy, and not concentrated in the hands of a few firms or countries?
From my perspective, the concentration of market power in a few AI-linked firms is a symptom of a deeper problem: the lack of regulation and oversight in the global stock market. In order to address this issue, we need to take a step back and think about the broader implications of the AI boom. For example, we need to consider the impact of AI on employment and the future of work, as well as the potential for AI to exacerbate existing inequalities in the global economy.
In conclusion, the AI boom is reshuffling the pecking order of global stock markets, with South Korea and Taiwan emerging as some of the world's largest markets. However, this concentration of market power in a few AI-linked firms raises important questions about the future of global stock markets and the need for regulation and oversight. Personally, I think that we need to take a more proactive approach to addressing these issues, in order to ensure that the benefits of the AI boom are shared equitably across the global economy.
