US-Japan Yen Intervention May Prove to Be a Blip in the Longer-Term

Akira Ito
04 Aug, 2026
Tokyo

Japan's indexes traded down for the second consecutive session, and investors assessed the latest currency intervention to arrest the decline in Japanese yen.  

The Nikkei 225 Stock Average decreased 0.7%, the broader TOPIX fell 0.6%, and the yen traded at 157.87 against the U.S. dollar. 

The broader stock market indexes traded down, driven by declines in tech stocks despite gains in AI- and semiconductor-linked stocks in overnight trading in New York. 

Market sentiment remained cautious amid a worry that a stronger yen could dampen earnings growth for the export-driven companies after Japan's currency appreciated 5% over the previous three sessions. 

The US-Japan joint intervention , the first since 1998, is likely to support the yen between the 156 and 160 levels; however, the longer-term downward trajectory of Japan's embattled currency is not likely to alter. 

Last month, the yen dropped to a four-decade low of 163.56 against the U.S. dollar amid mounting fiscal deficit concerns, a persistent interest rate differential, and mounting pressures from elevated energy costs. 

Moreover, the Bank of Japan's reluctance to lift rates to positive real interest rates has kept the yen under pressure over the last seven years.  

Japan Indexes and Stocks 

The Nikkei 225 Stock Average decreased 0.7% to 63,333.35, and the broader TOPIX declined 0.6% to 3,936.48. 

Stock market indexes traded down as a stronger yen clouds the earnings outlook for Japan's export-driven companies, making the domestic equities less attractive to foreign investors. 

Tokyo Electron Ltd. increased 1.4% to ¥55,810.0, Advantest Corp. decreased 3.9% to ¥30,210.0, Lasertec Corp. jumped 5.3% to ¥43,090.0, and Kioxia Holdings advanced 1.3% to ¥49,790.0. 

Murata Manufacturing eased 1.3% to ¥7,068.0, Fujikura Ltd increased 6.9% to ¥4,588.0, and Nidec added 0.6% to ¥2,702.0. 

Toyota Motor decreased 0.9% to ¥2,936.0, Honda Motor declined 0.4% to ¥1,560.50, and Nissan Motor eased 0.3% to ¥324.10.  

Sumitomo Mitsui Financial Group decreased 1% to ¥6,551.0, Mitsubishi UFJ Financial Group declined 2.6% to ¥3,473.0, and Mizuho Financial added 0.4% to ¥8,127.0.