Key Takeaways
- The Bank of Korea (BOK) raised its benchmark interest rate by 25 basis points to 2.75%, the first increase since January 2023, to combat headline inflation that reached 3.2% in June.
- South Korea’s KOSPI index plummeted nearly 9%, breaking below the 7,000-point mark, as a massive sell-off in semiconductor heavyweights SK Hynix (000660) and Samsung Electronics (005930) triggered a broader market rout.
- Geopolitical tensions in the Middle East have driven crude oil prices higher, with United Airlines (UAL) projecting an additional $6 billion in fuel costs this year due to disruptions in the Strait of Hormuz.
- Tokyo Electron (8035) announced an expanded collaboration with Nvidia (NVDA) to integrate "Agentic AI" and robotics into manufacturing, even as broader tech sentiment soured.
- South Korean regulators are preparing emergency measures to curb volatility caused by single-stock leveraged ETFs following record losses for retail investors.
The Bank of Korea (BOK) shifted to a tightening stance on Thursday, delivering its first interest rate hike in three and a half years. The central bank raised the seven-day repurchase rate to 2.75%, citing persistent inflationary pressures and a sharp rise in household loans. Governor Shin Hyun-song warned that inflation is likely to remain above the 2% target for a "considerable period," exacerbated by rising energy costs and a chip-led export boom that has bolstered economic growth but fueled domestic price pressures.
The rate decision coincided with a historic collapse in the Seoul stock market. The KOSPI fell 8.95% to close at 6,806.93, its sharpest decline in years. The rout was led by SK Hynix (000660), which saw its shares plunge more than 15%—the largest one-day drop since its 1996 listing. Investors moved to lock in profits following the company's recent Nasdaq ADR debut, while Samsung Electronics (005930) also tumbled 10.7%. Analysts noted that the sell-off was intensified by forced liquidations of leveraged retail positions.
In response to the market instability, South Korean President Lee Jae-myung ordered financial regulators to introduce safeguards for single-stock leveraged ETFs. These products, which track Samsung and SK Hynix, have been blamed for amplifying the KOSPI’s volatility. The Financial Services Commission (FSC) is expected to announce measures shortly, which may include raising the minimum deposit requirement for retail investors from 10 million won to 50 million won ($33,500).
Global energy markets remain on edge as U.S. CENTCOM confirmed a new wave of strikes against targets in Iran. The ongoing conflict has effectively closed the Strait of Hormuz, a critical chokepoint for 20% of the world's oil supply. United Airlines (UAL) warned on Wednesday that its fuel bill will swell by $6 billion this year, marking the second-highest cost for the carrier after labor. The airline industry faces significant profit erosion as jet fuel prices outpace broader crude oil gains.
Despite the tech sector's volatility, Tokyo Electron (8035) and Nvidia (NVDA) are deepening their ties. The companies announced a partnership to use the Nvidia Isaac robotics platform and Agent Toolkit to develop "Agentic AI" solutions for digital transformation in manufacturing. This collaboration aims to address Japan's labor shortages by deploying autonomous robots and AI-driven drug discovery platforms, even as investors remain cautious about the immediate sustainability of the AI infrastructure build-out.
Ed Liston is a senior contributing editor at TheStockMarketWatch.com. An active market watcher and investor, Ed guides an independent team of experienced analysts and writes for multiple stock trader publications.