u/not_my_monkeys_

The commenter points out that destroyed military equipment (missiles, jets, radar systems) from the conflict will cost billions to replace. This large-scale replacement of spent munitions and destroyed assets necessitates massive new government spending, which flows directly to defense contractors. Regardless of the conflict's outcome, the need to replenish US military stockpiles will lead to increased revenues and profits for companies in the aerospace and defense sector. Future administrations could drastically cut the defense budget, or the replenishment process could be much slower than anticipated, delaying the revenue impact.

The commenter notes that geopolitical uncertainty and high oil prices are historically negative for the broader market. A prolonged conflict with Iran, even after a declared US victory, would create significant uncertainty and sustained high energy prices, acting as a major headwind for corporate profits and consumer spending. The combination of geopolitical instability and an oil price shock would likely cause a significant downturn in the S&P 500 as investors flee to safety and economic growth slows. The conflict resolves quickly, the economic impact of higher oil is muted, or other positive market catalysts (e.g., Fed action) outweigh the geopolitical risks.

The author posits a scenario where a US-Iran conflict leads to a prolonged closure of the Strait of Hormuz, even after a supposed US "victory" declaration and withdrawal. A sustained closure or significant disruption of the Strait of Hormuz, a critical chokepoint for global oil supply, would drastically reduce available oil and cause prices to spike "well above 100." The market is underestimating the risk of a protracted conflict where Iran maintains leverage by controlling the strait, creating a long-term supply shock that would benefit oil prices. A swift diplomatic resolution is reached, Iran lacks the capability for a long-term blockade, or global strategic reserves are effectively deployed, all of which would push oil prices down.