South Korea has officially surpassed India to become the world's sixth-largest stock market by capitalization, a significant shift propelled by an intense AI-led rally in its semiconductor and technology sectors. A recent report from Jefferies highlights this development, noting that Korea's market cap has climbed to $4.92 trillion, edging past India's $4.82 trillion.
The global investment landscape is undergoing a dramatic transformation, with artificial intelligence emerging as the dominant theme. Jefferies' analysis, titled 'The Battle for Capital and Fast Tracking,' underscores how the AI investment boom is reshaping capital flows and investor preferences worldwide.
AI Fuels Semiconductor Surge
The primary catalyst for South Korea's market ascent has been robust investor interest in AI-related technology and semiconductor companies. Giants like SK Hynix and Samsung Electronics have seen substantial inflows, driving their valuations higher. This phenomenon is not isolated, as the report points to growing signs of speculative activity across Asian technology markets.
In Korea, for instance, margin debt has surged significantly since early 2025, and investors have heavily invested in leveraged semiconductor ETFs. One Hong Kong-listed leveraged SK Hynix ETF alone has amassed over $10 billion in assets, becoming the world's largest single-stock leveraged ETF.
Global Battle for Capital Intensifies
The report also cautions that while AI remains a powerful market driver, investors may be underestimating geopolitical risks and signs of speculative excess within the technology sector. The global battle for capital is intensifying, with several factors at play:
- Mega AI IPOs: Blockbuster initial public offerings are anticipated in the United States, including SpaceX, OpenAI, and Anthropic. These listings are expected to attract enormous investor interest and could potentially divert capital from other equity markets. SpaceX, for example, is projected to raise around $75 billion at a valuation of approximately $1.77 trillion.
- Index Inclusion Changes: Jefferies notes that changes to US index inclusion rules could allow these mega-cap IPOs to enter major indices much faster, compelling passive funds to buy shares and further boosting demand. However, this could also "suck liquidity" from existing AI-related companies that have already benefited from massive inflows.
- China's Semiconductor Push: China is rapidly accelerating its efforts in memory chips, with upcoming IPOs for Yangtze Memory Technologies (YMTC) and ChangXin Memory Technologies (CXMT) expected to raise capital for expansion. China's integrated circuit exports jumped nearly 100% year-on-year in April, underscoring its growing capabilities and intensifying competition in the global semiconductor market.
Geopolitical Risks and Energy Exposure
Despite the market's AI obsession, Jefferies urges investors not to overlook ongoing geopolitical risks. Renewed tensions involving Iran and the continued escalation of the Russia-Ukraine conflict are cited as potential threats that could impact global markets and inflation. As a hedge against these uncertainties, the brokerage continues to favor energy exposure, arguing that developments in these regions could significantly influence global commodity prices.
In summary, while AI remains the primary growth story, the global investment capital landscape is entering a complex new phase. Mega IPOs, fierce semiconductor competition, geopolitical tensions, and shifting market leadership will increasingly dictate investor returns.