Asian equities extended their slide on Friday, with South Korea's KOSPI and Japan's Nikkei 225 bearing the brunt of a selloff driven by surging oil prices and a renewed spike in US Treasury yields. Brent crude traded above $108 a barrel, briefly touching $110, while the 10-year US yield hovered near 4.97%, reviving concerns that persistent inflation could force central banks to tighten policy further.
KOSPI under pressure from energy costs and higher yields
The KOSPI fell more than 2.5%, building on Thursday's losses, as foreign investors offloaded Korean shares. The index had managed to close above the 7,000 mark the previous day, but selling pressure has intensified. Samsung Electronics and SK Hynix, two of the market's heavyweight tech names, ended lower, reflecting the sector's vulnerability to rising discount rates.
South Korea's economy is particularly sensitive to imported energy costs, and the latest oil spike adds to manufacturing expenses while simultaneously pushing global bond yields higher. The combination is uncomfortable for a market that has benefited heavily from the AI and memory-chip rally, leaving valuations exposed when future earnings are discounted at higher rates.
Nikkei hit by chip slump and BOJ rate expectations
Japan's Nikkei 225 tumbled about 2.8%, with chip-related stocks among the biggest decliners. Kioxia Holdings, SoftBank Group, and Advantest each dropped roughly 5% to 6%. The selloff was compounded by growing market conviction that the Bank of Japan will raise interest rates again next week, adding to the squeeze on Japanese equities from both global and domestic monetary policy.
The yen traded around 154.4 per dollar, while Japanese government bond yields also climbed. Analysts at TD Securities noted that the yen's next move will depend heavily on how strongly the BOJ signals further tightening after September. A more hawkish path would pose an additional challenge for exporters, which are already grappling with a stronger currency and higher input costs.
Hot US PPI turns oil into a global rates problem
The deeper issue for both the KOSPI and Nikkei is that the oil shock is now feeding directly into the interest-rate debate. US producer prices rose 0.4% in August and 5.4% from a year earlier, with energy prices the biggest driver of the monthly goods increase. Diesel prices jumped 24.1%, according to the Bureau of Labor Statistics.
That data sent the 30-year Treasury yield to around 5.38%, its highest in nearly two decades, and pushed markets to price in roughly a 70% probability of a Federal Reserve rate hike next week. JPMorgan Asset Management strategist Tai Hui told the Financial Times that the widening Middle East conflict risks raising global energy costs further as pressure builds around major shipping routes.
The upcoming US CPI report is the next critical test. A hotter-than-expected reading would reinforce the worst combination for equities: expensive oil, higher yields, and less room for central banks to wait. As KOSPI drops below 7,000 and chip stocks face pressure, investors are bracing for further volatility.
Elsewhere in Asia, Hong Kong's Hang Seng fell 1.5%, China's CSI 300 lost 1.2%, and MSCI's broad Asia-Pacific index outside Japan declined 1.8%. The regional rout followed another retreat on Wall Street, where the Dow Jones Industrial Average dropped 400 points as oil topped $100 and yields hit 2023 highs, as reported earlier.
With oil prices showing no signs of easing and yields climbing, the outlook for Asian equities remains clouded. The KOSPI and Nikkei, in particular, face a dual threat from energy-driven inflation and tightening monetary conditions, leaving little room for a quick recovery unless oil retreats or central banks signal a pause.
This article is for informational purposes only and does not constitute financial advice.
