Korean Stock Market News Summary

1. Three Key Risks Threatening the AI Memory Boom: Oversupply, China Competition & Tech Innovation

SK Hynix shares plunged 15.37% on the Korean stock market, followed by a 9% decline in its ADR (American Depositary Receipt) on the Nasdaq. According to Nikkei, this correction reflects growing investor skepticism about the sustainability of the memory chip market cycle. Key risks identified include:

• Oversupply concerns as capacity expansions accelerate
• China’s aggressive push into the memory semiconductor space
• Technological disruption potentially reshaping memory demand dynamics

Samsung Electronics has also joined the capacity race by accelerating the launch timeline of its new Yongin semiconductor fab, intensifying competitive pressure across the industry.

2. Who Benefits from the Semiconductor Wealth? Labor vs. Business on Tax Policy

The debate over profit distribution from Korea’s semiconductor boom intensified following Samsung Electronics’ announcement of Q2 operating profit of 89.4 trillion KRW (+1,810% YoY). Key highlights:

• Labor groups are advocating for a corporate tax rate increase to 35%, arguing that the windfall should be more broadly shared
• Business groups oppose the hike, citing competitiveness concerns
• Combined operating profits of Samsung Electronics and SK Hynix are projected to reach 450–550 trillion KRW this year
• Critics point to structural issues in Korea’s compensation system, including seniority-based pay structures and the 52-hour workweek regulation, contrasting with global tech firms that deploy performance-based, equity-heavy compensation models

3. Retail Investors Wave the White Flag — 4 Trillion KRW in Panic Selling

Forced margin call liquidations triggered a massive 4 trillion KRW panic sell-off, as retail investors capitulated amid the market downturn. Notable details:

• Hyundai Motor and Naver, both down over 10% in a week, saw margin loan balances fall by 87.9 billion KRW and 33.5 billion KRW, respectively
• Citi Securities noted that when KOSPI 200 futures fell below 1,095, the National Pension Service’s (NPS) domestic equity allocation reached 26.8%, potentially triggering automatic rebalancing purchases

4. KOSPI Rebounds on Semiconductor Bargain Hunting; KOSDAQ Hits Year-to-Date Low

Korean equities showed a mixed performance, with the KOSPI staging a partial recovery driven by bargain hunters in semiconductor stocks, while the KOSDAQ hit a new year-to-date low.

Notable decliners:

Analysts noted that profit-taking pressure emerged following SK Hynix’s U.S. ADR listing, as investors perceived the event as a “sell-the-news” catalyst, with the post-listing momentum fading quickly.

Sources: Korean financial media | Date: Current reporting period