South Korean investors and major companies are significantly boosting their presence in the U.S. market, especially in AI-related industries. Retail investors, known as "Seohak ants," have quadrupled their net purchases of U.S. stocks in July to $2.88 billion, up from $632.95 million in the previous month. This aggressive buying is attributed to volatility in the domestic KOSPI, where major tech stocks like Samsung Electronics and SK Hynix saw declines, and a favorable won-to-dollar exchange rate has made U.S. investments more attractive. Investors are increasingly targeting high-volatility products, such as the Direxion Daily Semiconductor Bull 3X leveraged ETF (SOXL) and SK Hynix American Depositary Receipts (ADR), the latter seeing nearly $900 million in net purchases within six days of its listing.
SK Hynix, a key player in the AI semiconductor boom, raised an impressive $26.5 billion in its U.S. IPO, with its Nasdaq listing being more than seven times oversubscribed. This successful debut highlights strong global demand for its advanced memory chips, reflecting investor confidence in the AI sector. The company's net income reached 40.34 trillion ($26.6 billion) in the first quarter of 2026, and its shares have soared by 229% since the beginning of the year. Both SK Hynix and Samsung Electronics have committed to a $1 trillion AI investment initiative announced by South Korean President Lee Jae Myung, pledging substantial investments to build new chipmaking facilities. This move aligns with a broader trend of Korean firms seeking strategic partnerships and investments in the U.S. AI supply chain.
The South Korean government is also actively facilitating these U.S. connections. President Lee is set to meet with prominent AI leaders, including OpenAI CEO Sam Altman, Nvidia CEO Jensen Huang, Anthropic CEO Dario Amodei, and Broadcom President and CEO Hock Tan. These meetings are intended to link the government's three mega AI-related projects with leading global AI companies and attract U.S. venture capital investments. The President will also host an AI Summit in San Francisco, where top Korean business leaders, including Samsung Electronics Chairman Lee Jae-yong and SK Group Chairman Chey Tae-won, will discuss deepening technology and capital cooperation with global tech CEOs. Significant investment memorandums of understanding are anticipated, potentially re-confirming long-term contracts worth over $800 trillion (approximately $542 billion) from Samsung Electronics and SK Hynix with global big tech firms, aimed at developing four new semiconductor fabs in Korea.
