S&P 500 Drops 2.5% on Iran War
Markets tanked on Iran conflict escalation — S&P 500 fell 0.9% to 6,816 (down 2.5% intraday), Nasdaq -1% to 22,516, Dow -403 points. Energy and defense stocks rallied hard with XOM up 4-6%, NOC +6%. Rate cut odds faded as 10-year Treasury hit 4.06%.
The recent market downturn was triggered by joint U.S.-Israeli airstrikes on Iran that commenced on February 28, 2026. These strikes, described as a "pre-emptive strike" against Tehran's nuclear and missile programs, have reportedly killed over 1,000 people, including Iran's Supreme Leader Ayatollah Ali Khamenei, creating a significant power vacuum. This escalation follows a period of rising tensions, including a 12-day war between Iran and Israel in June 2025. In response to the latest strikes, Iran has launched retaliatory attacks on U.S. military installations across the Middle East and announced the closure of the Strait of Hormuz, a critical chokepoint for global oil supply. The surge in energy and defense stocks is a direct reaction to these events. The potential for a prolonged conflict and disruption to oil supplies has driven WTI crude up over 6%. Consequently, companies like ExxonMobil and Chevron have seen their stock prices rise. Defense contractors such as Northrop Grumman and Lockheed Martin are also rallying on the expectation of increased military spending. Historically, initial market shocks from geopolitical events are often followed by a recovery. Research on conflicts since World War II shows the S&P 500 was higher one year after the event in roughly 70% of cases. For example, after the start of the first Gulf War in 1990, the S&P 500 recovered initial losses within months and was up over 29% by the end of 1991. The conflict's primary threat to the broader economy is sustained high oil prices, which could fuel inflation. About one-fifth of the world's oil supply passes through the Strait of Hormuz, and a prolonged closure could trigger an inflation spike. This concern is a key factor in the rise of the 10-year Treasury yield, as investors anticipate that the Federal Reserve may delay planned interest rate cuts to combat inflationary pressures. Investors are also moving into safe-haven assets. Gold has climbed to a one-month high, and there is evidence of a similar trend in cryptocurrencies like Bitcoin and Ether, which have gained over 3%. The CBOE Volatility Index (VIX), often called the "fear gauge," has also climbed to its highest level of 2026.
