Why Is the Stock Market Down Today, 3/9/26?

2026-03-09 14:37:15

Abstract generation in progress

Both the S&P 500 (SPX) and the Nasdaq 100 (NDX) are down by over 1% on Monday as investors digest the implications of oil surging past $100 per barrel.

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The ongoing U.S.-Iran war has resulted in a near-closure of the Strait of Hormuz, a global chokepoint for oil flows. With supply severely constrained, oil prices have surged as traders eye prolonged disruptions to the roughly 20 million barrels of crude that pass through the waterway each day. Several Middle Eastern countries, including Saudi Arabia and Kuwait, have curbed oil production as storage space runs low.

Brent Eases as G7 Eyes Reserve Release

While Brent crude futures (CL) are up by over 10% today, the contracts retreated from their early-morning highs on reports that G7 countries are considering a joint release of 300 to 400 million barrels of oil from strategic reserves.

Wall Street has warned that the scale of economic damage and inflation from the war will ultimately depend on how long the battle continues. A common rule of thumb is that inflation will rise by 0.1% and gross domestic product (GDP) will fall by between 15 and 20 bps for every 10% increase in oil prices.

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