Japan's Indexes Extended Weekly Losses Amid Elevated Oil Price and Yen-Level Uncertainty

Akira Ito
10 Sep, 2026
Tokyo

Japan's indexes extended this week's losses amid heightened concerns over inflation.

The Nikkei 225 Stock Average decreased 0.7%, the broader TOPIX declined 0.2%, and the yen edged up 0.1% to 153.35 against the U.S. dollar. 

The Brent crude oil price per barrel rose 0.2% to $101.04 after the U.S. and Iran exchanged military strikes over the Strait of Hormuz. 

The U.S. president confirmed that the war with Iran is likely to drag at least two more months, despite repeatedly claiming otherwise over the last seven months. 

Elevated crude oil prices stoked fears of higher food and transportation costs across the globe and stoked broader inflation amid heightened supply disruption concerns. 

In overnight trading in New York, the S&P 500 Index decreased 0.5% and the tech-focused Nasdaq Composite declined 0.6% as the yield on 10-year Treasury notes advanced to a 3-year high of 4.81%. 

Benchmark indexes in Germany fell 1.7%, in France decreased 2%, and in the U.K. declined 1.6%. 

The Japanese yen strengthened to a seven-month high amid the sustained joint U.S.-Japan market intervention for the fifth consecutive week. 

Higher yen generally dampens earnings of export-driven Japanese corporations, as investors awaited the Bank of Japan's rate decisions next week. 

Japanese stocks were under pressure following losses in overnight trading in New York after the U.S. Treasury Department announced its plans to buy back up to $6 billion of long-term debt. 

The Treasury's plan fell substantially short of market expectations, and the yield on 10-year Treasury notes advanced to over 4.84%.    

 

Japan Indexes and Stocks 

The Nikkei 225 Stock Average decreased 0.7% to 64,709.72, and the broader TOPIX fell 0.2% to 4,038.40. 

Technology and consumer stocks led decliners in Tokyo's trading for the third session in a row. 

Fujikura Ltd. decreased 5.2% to ¥5,203.0, Ibiden Corp. fell 4.4% to ¥20,480.0, Tokyo Electron declined 2.6% to ¥52,280.0, and Advantest Corp. gained 1.7% to ¥33,390.0. 

Fast Retailing decreased 0.7% to ¥66,370.0, Seven & I Holdings eased 0.7% to ¥2,020.0, and Takashimaya Co. Ltd. edged up 0.6% to ¥2,112.50.