Global financial markets declined sharply on March 3 as the escalating conflict involving Iran disrupted energy supplies and deepened investor anxiety over the economic consequences of a prolonged regional war. Stock markets across the United States, Europe, and Asia recorded steep losses, while oil and natural gas prices surged amid fears of sustained supply disruptions in the Persian Gulf.
On Wall Street, US markets extended losses for a second straight session. The Dow Jones Industrial Average closed down 403 points, a decline of 0.83 percent, settling at 48,501. The S&P 500 fell 0.94 percent and the Nasdaq Composite dropped 1.02 percent. The session was marked by extreme volatility — at their intraday lows, the Dow had fallen more than 1,277 points and the S&P 500 shed as much as 2.5 percent before markets recovered a portion of those losses in afternoon trading, following a statement from President Donald Trump that the US Navy would escort tankers through the Strait of Hormuz if necessary.
Investor anxiety was visible in the CBOE Volatility Index, which climbed sharply during the session, reflecting heightened uncertainty across financial markets.
Market declines extended globally. In Asia, Japan's Nikkei 225 dropped 3.06 percent. South Korea's Kospi fell sharply across consecutive sessions as the conflict escalated, with circuit breakers triggered during trading. European indices also recorded broad declines, reflecting concerns about energy supply and economic fallout.
Energy markets drove much of the turbulence. Oil prices climbed further on March 3 after Iran's Revolutionary Guard declared the Strait of Hormuz closed — a move threatening one of the most critical maritime energy corridors in the world. Brent crude rose approximately 8 percent to $83.83 per barrel, while US West Texas Intermediate crude climbed more than 8 percent to $77.05 per barrel. These were the highest closing levels since the US and Israeli strikes on Iran's nuclear facilities in June 2025.
The Strait of Hormuz connects the Persian Gulf to global shipping routes and is the transit point for roughly a quarter of the world's seaborne oil trade. Any sustained disruption to shipping through the waterway carries significant implications for global energy supply and pricing.
Additional pressure came from disruptions to liquefied natural gas production. QatarEnergy confirmed it had halted operations at Ras Laffan Industrial City — the world's largest LNG export facility — following Iranian drone attacks. The company subsequently suspended output of other energy products as well. European natural gas futures surged more than 20 percent following the halt, as buyers scrambled to assess the impact on contracted supplies.
Shipping across the region faced severe disruption. As of March 3, at least five tankers had been damaged in the vicinity of the strait, and approximately 150 vessels were stranded nearby due to the security situation. At least one seafarer was reported killed.
The developments concentrated investor focus on the duration of the conflict. Trump told reporters the operation was projected to last four to five weeks but could extend longer. That timeline, combined with real-time disruptions to oil, LNG, and maritime trade, kept financial markets on edge throughout the session.
As of the close of trading on March 3, markets remained volatile, with investors tracking developments in the conflict and any diplomatic or military responses that could affect the stability of global energy supply chains.
Mohsin Rana
