Dollar Hits Seven-Week Low Amid Hormuz Deal Hopes, Yen Intervention Gains

The US dollar reached a seven-week low in early August 2026, driven by rising hopes for a potential agreement in the Strait of Hormuz and the sustained gains of the Japanese yen following recent currency intervention. The dollar index (DXY) fell below the 99.8 level, touching 99.42 on August 3. This decline was interpreted as a significant shift in global markets, reshaping investor risk appetite.

Optimism surrounding a potential deal in the Strait of Hormuz intensified with reports that the US, Iran, and Oman were nearing an interim agreement to reopen the critical waterway. US President Donald Trump indicated significant progress in negotiations, suggesting an announcement could be imminent. This positive sentiment eased geopolitical risk premiums, leading to a notable pullback in crude oil prices. Brent crude fell below $80 per barrel, while US crude (WTI) hit three-week lows. The drop in oil prices has the potential to alleviate global inflationary pressures.

Concurrently, a rare, coordinated yen-buying intervention by Japan and the United States in late July and early August successfully halted the Japanese currency's slide to 40-year lows against the dollar. As a result of this intervention, the yen gained significantly, reaching a nearly three-month high of 155.20 per dollar. US Treasury Secretary Scott Bessent reiterated strong US support for Japan's efforts to stabilize the yen, making speculators wary of rebuilding bearish positions.

The dollar index's retreat to around 99.6625 was attributed to the yen intervention and foreign selling of dollar-denominated bonds, as well as falling oil prices which diminished expectations for Federal Reserve (Fed) interest rate hikes. The euro climbed to a 1.5-month high of $1.1559 against the dollar, and the British pound also strengthened. Gold prices also saw gains, buoyed by the Hormuz deal hopes and a weaker dollar.

The de-escalation of tensions in the Strait of Hormuz and the decline in oil prices have eased global inflation concerns, subsequently reducing pressure on the Fed's monetary policy. Market expectations solidified around the Fed implementing only one rate hike by the end of the year. The yen intervention, meanwhile, underscored policymakers' concerns about global currency stability and extreme fluctuations.

Analysts suggest that while the yen intervention was effective in the short term, a more aggressive approach to monetary policy by the Bank of Japan (BOJ) is needed for sustained stability. Market participants are closely monitoring upcoming US nonfarm payrolls data for July and the September Fed and BOJ policy meetings. Some hedge funds have begun rebuilding short-yen positions, anticipating that underlying rate dynamics, rather than intervention, will ultimately dictate the currency's direction.