Rising Oil Prices Spark Inflation Concerns as Dollar Index Posts Largest Single-Day Gain in Two Weeks
Taylor Wilson
A reported deal to bar U.S., Israeli and other "hostile" ships from the Strait of Hormuz sent Brent crude sharply higher, lifting the Bloomberg Dollar Spot Index 0.2% Thursday — its largest one-day gain since July 23 — and reigniting bets on a Fed September rate hike.
Why did the dollar snap back?
The Bloomberg Dollar Spot Index rose 0.2% Thursday, its biggest one-day gain since July 23, reversing a three-session slide.
The trigger: reports of a deal that would ban ships from the U.S., Israel and other "hostile nations" from the Strait of Hormuz — the narrow waterway through which a large share of global crude flows.
This means → the world's most critical oil-shipping chokepoint came under threat, Brent crude surged, and the dollar followed.
How does an oil spike translate into inflation fears?
Rising energy costs pushed inflation expectations higher, U.S. Treasury yields climbed in tandem, and markets began repricing the odds of a Fed rate hike in September.
In plain terms = when oil prices jump, shipping and production costs rise across the board, feeding through to consumer prices — making it harder for the Fed to cut rates.
Since the late-February U.S. strikes on Iran disrupted global energy flows, the dollar has gained a cumulative 1.5%.
Who is getting hurt the most?
All G10 currencies weakened against the dollar, with the yen the worst performer — USD/JPY broke above 158 for the first time in nearly a week.
This means → Japan is a net energy importer; higher oil prices simultaneously worsen its trade deficit and inflation outlook, putting the yen under double pressure.
Marcio Riauba, head of trading at Banco StoneX, said investors are rushing into safe-haven assets: "As tensions heat up, the market is immediately pricing in higher global inflation risk."
What is Wall Street's read on what happens next?
Pioneer Investments strategist Paresh Upadhyaya noted: "What we're seeing is a partial unwind of prior optimism. The U.S. is unlikely to accept many of the deal's terms without significant modifications."
In plain terms = he thinks the deal is unlikely to hold, and the oil shock may prove short-lived — but markets have already moved.
One-day options contracts tied to the Bloomberg Dollar Index jumped to their highest since July 30, as traders hedge for volatility ahead of Friday's nonfarm payrolls report.
Why is the jobs report the next flashpoint?
Elias Haddad, global market strategist at Brown Brothers Harriman, said "solid U.S. labor-productivity growth is providing fresh tailwind support for the dollar."
The Bureau of Labor Statistics reported the same day that U.S. second-quarter productivity growth beat expectations.
This means → if Friday's payrolls are equally strong, the twin logic of "oil lifts inflation + economic resilience supports rate hikes" gets a double confirmation, and the dollar could extend its rally.
Content is for reference only, not financial advice.