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Yen gains sharply, dollar eases from two-week high - Finance news and analysis from Global Banking & Finance Review
Finance

Yen gains sharply, dollar eases from two-week high

Published by Global Banking & Finance Review

Posted on September 2, 2026

5 min read

· Last updated: September 2, 2026

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Japanese Yen Gains Sharply as Dollar Eases from Recent Two-Week High

Yen Surges Amid Market Uncertainty and Central Bank Actions

By Karen Brettell

Sept 2 (Reuters) - The Japanese yen gained sharply against the U.S. dollar on Wednesday after having retraced approximately half of the increases made following a rare joint intervention by the U.S. and Japan at the end of July.

Market Reaction and Possible Causes

It was not immediately clear what prompted the move. The yen, which had reached a 40-year low of 163.98 per dollar before the intervention, rose to as high as 155.21 afterwards before surrendering some of the gains. The yen was last up 0.79% at 158.92 per dollar. 

Speculation on Rate Checks and Intervention

"It's a big chunky move and it would be a convenient time for the U.S. or Japan, to at least conduct a rate check, after the Bank of Japan comments this morning," said Chris Scicluna, head of economic research at Daiwa Capital Markets Europe.

Bank of Japan's Stance and Comments

Hawkish BOJ board member Hajime Takata said on Wednesday that the central bank should conduct interest rate hikes nimbly to counter intensifying inflationary pressures, rather than adhere to a fixed semiannual pace anticipated by markets.

"It is difficult to say what is behind the move in dollar/yen, but I suspect this is more likely to be a rate check than intervention to try and shift the trend as the recent intervention did not do that," Scicluna said.

During a rate check, a government or central bank asks financial institutions to quote an exchange rate but does not buy or sell.

Statements from Key Officials

BOJ Governor Kazuo Ueda on Tuesday also signalled a strong chance of a hike this month. U.S. Treasury Secretary Scott Bessent voiced strong support for "decisive" monetary steps to combat yen weakness in a meeting with Ueda, the Treasury Department said on Tuesday.

Analyst Perspectives on Yen Rally

Analysts said that while some factors support the possibility of Wednesday's yen rally being an intervention, the size of the move was relatively limited.

"If it is intervention, they do tend to happen when markets are thin, right. They would be thin this week, so we could possibly tick that box," said Hank Calenti, chief strategist, global markets at SMBC EMEA.

On the other hand, the yen's gains remain below what might be expected from an official move, said Takafumi Onodera, first vice president at Mitsubishi UFJ Trust and Banking Corporation.

"Unless the yen strengthens further from here, the magnitude of the move does not suggest direct market intervention," Onodera said.

Interest Rate Differentials and Yen Weakness

The yen has struggled to find support due to the wide differential between U.S. and Japanese interest rates, with the yen trading back to 160.39 earlier on Wednesday, the weakest level since the intervention.

"The drift back above 160 suggests that markets don't really see a fundamental underpinning for the yen at this point," said Eric Theoret, currency strategist at Scotiabank.

Oil Prices and Broader Market Impacts

OIL RAISES INFLATION FEARS

A spike in oil prices and a rise in benchmark 10-year Treasury yields to a three-year high had boosted the dollar earlier on Wednesday.

The dollar index, which measures the greenback against a basket of currencies including the yen and the euro, fell 0.09% to 99.59, with the euro down 0.06% at $1.1585.

Sterling weakened 0.23% to $1.3484.

Geopolitical Tensions and Oil Supply

Brent crude prices rose 1% in a volatile session, driven by renewed military strikes between the U.S. and Iran that have restricted world oil supply.

"Markets are obviously worried about the latest U.S.-Iran developments," said Theoret.

Iranians and their Arab neighbours feared a return of war on Wednesday after the biggest exchange of fire between Tehran and Washington since July, with U.S. forces striking Iran's southern coast and Iran firing at American bases across the region.

Inflation and Central Bank Responses

Concerns have grown that higher oil prices could feed through to consumer price inflation that is already running above target and raise the odds of Federal Reserve interest rate hikes. 

Hawkish comments from Fed Chairman Kevin Warsh on Friday prompted traders to raise bets on a hike at the U.S. central bank's September 15-16 meeting. 

Fed funds futures traders are pricing in 63% odds of a September hike, up from 35% before Warsh's comments. 

Other Currency Movements

Canadian Dollar and Bank of Canada Policy

The Canadian dollar gained after the Bank of Canada kept its key policy rate on hold at 2.25% on Wednesday, as widely expected, but said the risks to inflation had risen while new U.S. tariffs made growth prospects more uncertain.

The loonie was last up 0.42% at C$1.384 per dollar.

New Zealand Dollar and RBNZ Actions

The New Zealand dollar dropped after the country's central bank lifted interest rates for a second straight meeting on Wednesday and signalled more tightening ahead, but stressed any further moves would be measured as it warned of mounting risks to the economic outlook.

The kiwi weakened 0.78% to $0.5845.

(Reporting by Karen Brettell, Dhara Ranasinghe, Noriyuki Hirata, Sophie Kiderlin and Stefano Rebaudo; Editing by Mark Porter and Andrea Ricci)

Key Takeaways

  • Yen retraced about half of gains from the rare joint U.S.–Japan intervention at end of July, rising to around ¥158.6 per dollar after previously hitting a 40‑year low near ¥164 against the dollar
  • Hawkish Bank of Japan commentary—especially from board member Hajime Takata—and signals from Governor Kazuo Ueda on possible September rate hikes bolstered the yen
  • Ongoing U.S.–Japan coordination, including ‘orderly’ exchange‑rate assurances and willingness to act again, continues to underpin market confidence amid volatility

Frequently Asked Questions

Why did the Japanese yen gain sharply against the U.S. dollar?
The yen strengthened following joint intervention by Japan and the U.S., and hawkish comments from Bank of Japan officials signaling possible rate hikes.
Did the move in yen/dollar suggest a formal market intervention?
Analysts suggest the move was more likely a rate check than direct intervention, as the size of the yen's gain was relatively limited.
How did oil prices impact currency markets?
A spike in oil prices raised inflation fears, influencing the strength of major currencies, including the dollar and the yen.
What are the market expectations for U.S. Federal Reserve policy?
Traders increased bets on a September Fed rate hike due to comments from the Fed Chairman and ongoing inflation concerns.
What remains a key factor in the yen's ongoing weakness?
The wide interest rate differential between the U.S. and Japan continues to put pressure on the yen, limiting its ability to sustain gains.

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