The South Korean Kospi and the Nasdaq 100 are showing an unusually strong connection. Their 60-day correlation hit 0.50, the highest since 2021, reflecting how AI-driven investments are shaping both markets simultaneously.
How AI Spending Links Samsung, SK Hynix, and Nasdaq
Samsung Electronics and SK Hynix dominate the Kospi, making up over half of its value. This means the South Korean index’s movements are heavily influenced by these chipmakers, which are also major players in the AI infrastructure boom. Global demand for DRAM chips, central to AI data centers, now comes from data centers for more than 50% of total consumption, up from 40% last year.
This week highlighted the volatility tied to AI spending. SK Hynix’s shares dropped 13% amid growing concerns about the pace of AI capital expenditure. Since Samsung and SK Hynix trade before Wall Street opens, their price fluctuations often foreshadow Nasdaq's reaction to AI developments.
Market Reactions and Risks from AI-Driven Cycles
On July 13, fears around AI spending triggered a sharp selloff: Kospi fell over 8% as SK Hynix plunged 15%. The Nasdaq 100 followed with a moderate 1.88% decline, dragging down heavyweight chipmakers like Micron (down 4%), SanDisk (down 12%), and Intel (down 6%). This shows how sentiment around AI hardware deeply entwines these markets.
Analysts caution that any slowdown in hyperscaler capital expenditures would hurt South Korea’s market more. The Kospi’s heavy reliance on memory chip stocks, combined with higher volatility and leveraged ETF trading, intensifies these swings. Samsung’s upcoming earnings guidance, released about two weeks before major U.S. semiconductor results, will be closely watched to gauge future market alignment.
Meanwhile, China’s memory chipmaker Changxin Technology Group surged 466% after its Shanghai listing, becoming the country’s most valuable listed firm. This reflects growing competition in chip markets across Asia.
This content is informational and not financial advice.
