Since late February 2026, global markets have been closely monitoring the escalation of U.S.-Iran tensions. These developments have already sent ripple effects through financial markets over the past months, and recent attacks threaten to trigger further shockwaves.
At the center of the conflict is the Strait of Hormuz, a vital chokepoint for global oil transportation. Recent estimates indicate that trade volume through the strait has plummeted to 2 million barrels per day due to military activity in the region, down from peak levels that represented nearly one-fifth of global oil exports.
On Wednesday, September 9, 2026, Iran claimed to have attacked 10 vessels near the Strait of Hormuz in response to the U.S. previously sinking five Iranian tankers. This marked one of the largest confrontations between the two parties since the beginning of the conflict. Following these hostilities and subsequent disruptions, Brent crude climbed above $100 per barrel for the first time since July.
Surging fuel prices are putting additional pressure on both household and corporate budgets. As a result, these concerns are spilling over into equity markets, including the Dow Jones, whose blue-chip companies span consumer goods, healthcare, and other sectors that could be affected by higher costs and weaker demand. On Wednesday, the index lost 405 points (0.8%), marking its third consecutive day of losses, and closed near 52,381.
Treasury yields have also risen amid escalating inflation expectations. The 10-year yield hit its highest level since November 2023, making bonds more competitive with equities and potentially weighing on the performance of index companies.
On Wednesday, September 16, according to the US economic calendar, the Fed is expected to decide on interest rates. For now, the likelihood of a further rate hike is near 60%, as energy prices have risen and August employment data came in relatively strong. If rates are raised, this could weigh on consumer spending and borrowing, as well as business investment and growth.
For the moment, the geopolitical backdrop remains highly volatile, with recent strikes ending a period of relative calm. Iran has already expressed its readiness for a more intense conflict if the situation requires it, warning that it could escalate its military actions if the U.S. keeps striking Iranian territory.
Donald Trump has suggested the conflict could persist until at least November, when the U.S. midterm elections will be held. The U.S. president has also alleged that Tehran intends to interfere with the upcoming vote.
This article was written in cooperation with TradingView