South Korea's benchmark KOSPI stock index hit an all-time high on Wednesday as SK Hynix joined the $1 trillion market-capitalization club [1].

This milestone reflects the massive influence of artificial intelligence on global semiconductor markets. As tech companies race to build AI infrastructure, the demand for high-performance memory chips has shifted the valuation of key hardware providers.

SK Hynix saw its market value top $1 trillion [1] on May 27, 2024 [3]. The company joins a small group of elite firms, including Samsung and Micron, that have reached this valuation threshold amid the current AI-driven rally [2].

The surge in the KOSPI index coincided with the record valuation of the chipmaker [1]. While some reports differed on the exact timing of the index's peak, data from Reuters said the record high occurred on Wednesday [1].

Analysts said the growth is due to surging demand for AI-related memory chips [2]. These components are essential for the processing power required by large language models, and generative AI tools. The rally has positioned South Korean semiconductor firms as central pillars of the global AI supply chain.

Market activity in Seoul has remained volatile but bullish as investors pivot toward hardware that supports the AI boom. The KOSPI's record performance underscores the region's dominance in memory chip production, a sector that is currently seeing unprecedented capital inflows [1].

“SK Hynix joined the $1 trillion market-capitalization club”

The entry of SK Hynix into the $1 trillion club signifies a fundamental shift in the semiconductor industry, where AI-specific memory is now a primary driver of market value. By pushing the KOSPI to a record high, this growth demonstrates that South Korea's economic health is increasingly tied to the global scaling of artificial intelligence infrastructure.