TLDR
- Since late February when U.S. military operations against Iran commenced, the S&P 500 has declined approximately 1.4%, trading roughly 3% beneath its January peak.
- Despite the International Energy Agency deploying 400 million barrels from emergency reserves, crude oil prices continue their upward trajectory.
- Commodity futures indicate oil won’t stabilize to pre-conflict pricing until August 2027.
- Goldman Sachs analysts have adjusted their economic projections, anticipating elevated inflation, reduced GDP growth, and increased joblessness linked to the ongoing conflict.
- The 10-year Treasury yield has climbed 24 basis points to reach 4.23%, marking the highest level in more than 30 days.
Approaching the two-week mark, the U.S. military campaign against Iran continues to exert significant pressure across financial markets, with crude oil costs escalating, government bond yields advancing, and economic forecasters downgrading their projections.
Since military strikes commenced in late February, the S&P 500 has shed roughly 1.4% of its value. While the benchmark index remains within 3% of the all-time high recorded in January, market analysts caution that prolonged military engagement could trigger further deterioration.

Oil prices experienced a sharp acceleration this week following attacks by Iran-aligned forces on commercial tankers navigating the Strait of Hormuz. This critical waterway channels approximately 20% of global daily petroleum supply. Wednesday saw three separate vessels sustain damage in the strategic passage.
In an unprecedented intervention, the International Energy Agency authorized the release of 400 million barrels from strategic petroleum reserves to address supply disruption concerns. Nevertheless, futures market data indicates traders don’t anticipate prices returning to pre-conflict levels until August 2027.
President Trump announced intentions to invoke Defense Production Act authority to resume California offshore drilling operations. Despite Trump’s earlier statements suggesting the conflict would conclude “very soon,” Goldman Sachs and competing financial institutions are now preparing scenarios for extended disruption.
Inflation and Growth Outlook Worsens
Goldman Sachs updated three critical economic projections this week, all directly connected to the Iran military situation. The investment bank’s revised outlook calls for accelerated inflation, diminished economic expansion, and elevated unemployment rates.
Ten-year Treasury yields advanced to approximately 4.23%, representing a 24 basis point increase since late February. Thirty-year government bond yields reached 4.9% during early Thursday sessions. Market analysts attribute the movement to apprehension regarding expansionary fiscal policy and ambiguity surrounding inflation trajectories and interest rate policy.
The Federal Reserve finds itself navigating increasingly challenging circumstances. Elevated petroleum costs fuel inflationary pressures, potentially compelling the central bank to maintain higher interest rates for an extended period, diminishing prospects for rate reductions throughout the year.
ING analyst Francesco Pesole suggested that emergency petroleum reserve deployments might actually transmit negative market signals. His assessment indicates global leaders perceive minimal likelihood of rapid conflict resolution.
Iran’s Military and Nuclear Risks
Iran maintains operational capability with short-range missile systems, unmanned aerial vehicles, and naval mining equipment capable of disrupting commercial shipping operations. Strategic analysts suggest fully securing the Strait of Hormuz for unrestricted passage would necessitate ground force deployment — representing substantial military escalation.
Iran possesses stockpiles of uranium enriched to 60% purity, approaching weapons-grade specifications. Nuclear Threat Initiative experts caution that should the Iranian government survive the military campaign, it may possess both capability and incentive to develop nuclear weapons.
Persian Gulf nations, facing significant exposure to Iranian military strikes and reliant upon U.S. air defense systems, are expressing mounting dissatisfaction with Washington through diplomatic channels. Multiple analysts suggest the region confronts two unfavorable scenarios: an Iran that endures and reconstructs its capabilities, or a destabilizing power vacuum.
Wall Street equity strategists have yet to modify year-end S&P 500 price targets, which continue projecting a 14% appreciation from current valuations. However, analysts observe the market has remained confined within a 4% trading band for 14 consecutive weeks.
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