• SK Hynix (000660.KS) surged 30% and Samsung Electronics (SSNLF) jumped 27%, lifting the Kospi 18%.
  • Citadel's purchase of distressed AI assets fueled a relief rally.
  • Analysts said heavy deleveraging by retail investors and hedge funds has largely run its course.

A Relief Rally in Seoul

South Korean chipmakers led a stunning rebound in equities on [Date], as the Kospi soared 18% in a single session, marking its best day on record. SK Hynix and Samsung Electronics, the country's two largest memory-chip producers, surged 30% and 27%, respectively, in a dramatic turnaround from weeks of AI-driven selling.

The catalyst: Citadel's acquisition of distressed AI-related assets, which injected a dose of confidence into a market that had been gripped by fears of a prolonged downturn. The move signaled that savvy institutional investors see value in the sector, triggering a wave of short covering and bargain hunting.

"This is a classic relief rally," said one Seoul-based fund manager, speaking on condition of anonymity. "The selling pressure has abated, and valuations have become attractive for long-term investors."

Deleveraging Runs Its Course

Market participants pointed to the easing of forced selling as a key driver. Over the past few weeks, both retail investors and hedge funds had been aggressively reducing leverage, exacerbating the selloff. But according to analysts, that process now appears largely complete.

"The heavy deleveraging is behind us," said a strategist at a local brokerage. "The market was oversold, and now we're seeing a normalization."

The rebound was broad-based, with tech and financial stocks participating. The Korean won also strengthened against the dollar, reflecting improved investor sentiment.

However, some caution remains. "The rally could be fragile," noted the strategist. "It depends on whether AI demand sustains and whether memory prices stabilize."

Looking Ahead

The short-term outlook hinges on continued AI infrastructure spending and memory-chip pricing. SK Hynix and Samsung Electronics are both expected to benefit from robust demand for high-bandwidth memory used in AI servers. Government support for semiconductor investment and capacity expansion could also provide a tailwind.

"Structural demand from AI is intact," said the fund manager. "But volatility is likely to persist as the market digests the recent swings."

Investors will be watching for earnings reports and any policy signals from the government. For now, the mood has turned cautiously optimistic.

Correction: An earlier version of this article misstated the Kospi's gain as 17%. The index actually rose 18%.