S&P 500 futures fall 0.9% after US-Israeli strikes on Iran

S&P 500 futures fall 0.9% after US-Israeli strikes on Iran

S&P 500 Futures Drop Amid Geopolitical Tensions Following U.S.-Israeli Strikes on Iran

S&P 500 futures fell 0.9% on Saturday as global markets reacted to escalating U.S. and Israeli military strikes on Iran, sparking concerns over oil supply disruptions and broader economic fallout. The decline reflects investor caution amid heightened geopolitical risks, with oil prices surging in anticipation of prolonged conflict.

The attacks have intensified fears of a prolonged disruption to the Strait of Hormuz, a critical global oil chokepoint through which approximately 20 million barrels of crude transit daily. Iran, a major oil producer with the world's third-largest proven reserves, has historically threatened to restrict the strait during conflicts with Western nations. Analysts warn that even a partial closure could drive oil prices significantly higher, with estimates suggesting a potential $10–12 per barrel increase due to lost Iranian exports and competitive bidding for alternative supplies according to market analysis.

While OPEC and its allies announced a 206,000-barrel-per-day production increase to stabilize markets, experts doubt this will offset rising prices amid persistent supply concerns. Brent crude climbed 2.9% to $72.87 per barrel on Friday, with further gains anticipated if hostilities persist.

The conflict's economic ripple effects extend beyond energy markets. Higher oil prices could elevate inflation, squeezing consumers and corporations while pressuring central banks to maintain tighter monetary policies. This environment may weigh on equities, particularly sectors sensitive to interest rates or energy costs, such as transportation and manufacturing.

President Trump reiterated on Truth Social that military operations would continue "as long as necessary," adding uncertainty over the conflict's duration. Historically, similar tensions have led to sharp oil price swings; during a 2025 Israel-Iran clash, Brent crude surged past $100 per barrel amid strait disruptions.

Investors are now monitoring OPEC's production adjustments, Iran's response, and potential ceasefire developments for clues on market stability. For now, geopolitical volatility remains a dominant theme, testing risk appetite in global financial markets.

According to CNN reporting: CNN, March 1, 2026.