Why Wall Street Is Taking the War in Iran in Stride

• The Strait of Hormuz, through which about 20% of global oil and liquefied natural gas transits, temporarily slowed to near-standstill after Iran announced closures, but President Trump said the U.S. Navy would escort tankers if necessary
• Oxford Economics estimates a 'modest disruption' lasting two months would add only 0.3-0.4 percentage points to U.S. inflation, insufficient to derail markets or fundamentally change the economic outlook
• A complete blockade of the strait—assigned just 10% probability and 'diminishing over time'—would be required to push Brent crude to $130/barrel (from $80 recently), the level needed to significantly impact growth

Market Summary: Wall Street Resilience Amid Iran Conflict

Key Market Action:

U.S. stocks demonstrated resilience for the second consecutive trading day on Tuesday, rebounding from sharp early losses. Major indexes initially fell approximately 2.5% in the first trading hour before recovering to close down less than 1%.

Main Thesis:

Investors remain confident that the U.S.-Iran conflict won't fundamentally alter the outlook for the resilient U.S. economy. Wall Street's primary concern centers on oil prices as the key transmission mechanism for potential economic impact.

Critical Vulnerability - Strait of Hormuz:

The Strait of Hormuz represents the global economy's primary risk point, with approximately 20% of the world's oil and liquefied natural gas transiting through this channel. Iran announced closure of the waterway to all ships on Tuesday, though President Trump stated the U.S. Navy would escort tankers if necessary. Traffic had already slowed significantly following weekend U.S.-Israel strikes against Iran.

Economic Impact Scenarios:

• Modest disruption (2 months): Would add 0.3-0.4 percentage points to U.S. inflation, potentially causing the Federal Reserve to maintain current interest rates but unlikely to derail markets
• Complete blockade (10% probability): Could push Brent crude to $130/barrel, $50 above recent trading levels—the only scenario severe enough to change economic outlook

Analyst Consensus:

Morgan Stanley and Oxford Economics agree that only sustained, severe oil price increases would threaten the business cycle. Oxford Economics notes the probability of complete blockade is "diminishing over time" as Iran depletes its retaliatory capabilities.