Defense Stocks Climb as Iran War Enters Its Seventh Month

Six months into the U.S.-Iran war, the conflict has produced two parallel economic realities: an oil market straining consumers past $100 a barrel and a defense equity rally rewarding shareholders of America’s largest contractors. The asymmetry shows no signs of closing.

Shares of RTX Corporation closed at $197.16 on September 15, supported by demand for cruise missiles, radar systems, and air-defense interceptors that has climbed with each CENTCOM strike package. Lockheed Martin, the largest U.S. defense contractor by revenue, traded in a range of $531.05 to $535.77 on Wednesday, underpinned by sustained orders for Patriot missile batteries flowing to Gulf Cooperation Council allies.

The Supply Math

Persian Gulf oil exports have fallen from approximately 23 million barrels per day before the war began in February to roughly 16 million barrels per day today, a decline of nearly 30 percent, according to Britannica’s ongoing conflict tracker. Iranian crude loadings have collapsed from around 2 million barrels per day to an estimated 220,000 to 287,000 barrels per day, as CENTCOM-led interdiction operations took out tanker capacity and U.S. and Israeli strikes degraded export infrastructure.

IMF PortWatch recorded only 8 commercial transits through the Strait of Hormuz on September 13, against a pre-crisis baseline of 85 per day. In 2025, the strait handled roughly 25 percent of the world’s maritime trade in crude and petroleum products and about 19 percent of global liquefied natural gas, according to the Congressional Research Service.

Brent crude crossed $101 per barrel on September 9 after U.S. Central Command confirmed the destruction of five Iranian crude carriers in the Gulf of Oman, and has since reached $107.50 at its recent high. U.S. gasoline prices reached $4.03 per gallon over Labor Day weekend, a holiday record surpassing the 2012 peak.

Defense Demand Acceleration

The tanker war has been the primary catalyst for defense equity gains. U.S. Central Command struck three Iranian oil tankers on September 5 in retaliation for IRGC missile attacks on Navy warships, then destroyed five additional Iranian crude carriers on September 8 after the IRGC targeted a U.S. warship twice in two days.

Admiral Brad Cooper, the CENTCOM commander, said the message to the IRGC was clear: “If you shoot at two of our ships, we will impose an even higher economic cost—taking out three of yours.”

That escalation cadence has sustained demand for munitions resupply across the theater. On September 8, Houthi strikes wounded 73 people and ignited fires at oil installations across Abha, Jazan, Najran, and Khamis Mushait, briefly halting operations at the 400,000-barrel-per-day Jazan refinery, one of Saudi Arabia’s largest. Brent added $1 per barrel on the Saudi energy ministry’s statement, while U.S. crude futures rose more than $2, according to Reuters and Al Jazeera reporting from that day.

Expanded Houthi operations against Saudi energy infrastructure have increased GCC requests for both offensive strike capacity and passive air defense, a demand signal that defense analysts say will persist regardless of how quickly any Iran-U.S. ceasefire materializes.

Congressional and Diplomatic Backdrop

The defense spending cycle runs alongside political uncertainty in Washington. The House passed a war powers resolution 220 to 204 demanding the administration seek congressional authorization for continued operations, though analysts widely expect a presidential veto and note the measure carried no binding supplemental appropriation.

Diplomatic off-ramps remain narrow. Oman’s mediation push has produced no breakthrough, and the UN Panel of Experts monitoring Iran’s sanctions compliance faces mandate expiry on September 27 with Russia and China expected to veto renewal at a Security Council vote scheduled for September 17. Without the panel, independent oversight of the snapback sanctions regime effectively passes solely to the IAEA—an agency already reporting it cannot verify Iran’s enriched uranium stockpile.

Two Scenarios, Two Directions

For the oil market, Brent’s path above $100 has depended on the Hormuz chokepoint remaining effectively closed. Any partial diplomatic reopening would likely push prices 15 to 20 dollars lower per barrel, according to analyst projections cited by Gulf News.

For defense stocks, the calculus runs in reverse. A ceasefire reduces munitions burn rates and removes the war-duration premium built into RTX and Lockheed’s current multiples. Until either scenario materializes, the trade is simple: energy consumers absorb the cost, defense shareholders collect the premium.