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Home > News > Price Trends > Renewed US-Iran Conflict and Inventory Boost Push Oil Prices Sharply Higher

Renewed US-Iran Conflict and Inventory Boost Push Oil Prices Sharply Higher

ECHEMI 2026-09-02

September 2nd news

On September 1, local time, the renewed escalation of U.S.-Iran tensions triggered risk-averse sentiment in the market. Coupled with the release later in the evening of U.S. API inventory data that came in better than expected—providing a positive boost—the prices of international crude oil futures closed significantly higher, reaching a recent high and pushing geopolitical risk premiums sharply upward.

I. Review of Market Trends

On Tuesday, September 1, the NYMEX WTI October crude oil contract rose by $4.46, closing at $90.22 per barrel—a price increase of 5.20%. Meanwhile, the ICE Brent November crude oil contract climbed by $4.16, closing at $94.65 per barrel, representing a price increase of 4.60%. The day’s trading was clearly driven by news events; oil prices opened stronger in the morning. After the U.S. announced strikes against targets inside Iran, oil prices accelerated higher during the session. In the evening, following the release of API inventory data, bullish sentiment received further support, and oil prices continued to fluctuate at high levels.

2. Analysis of Core Driving Factors

1. Geopolitical conflicts in the Middle East are escalating once again, and the Strait of Hormuz faces the risk of closure.

The U.S. Central Command announced that, starting at 12:00 p.m. EDT on September 1, the U.S. military has launched a new round of strikes against Iran-related targets. The U.S. side stated that this operation is in retaliation for Iran’s attempts to lay mines in the Strait of Hormuz and its missile launch targeting a U.S. military base in Jordan. At the same time, the U.S. issued a strong warning: if Iran retaliates, the United States will respond with even more severe and higher-level strikes.

The Strait of Hormuz carries nearly one-third of the world’s seaborne crude oil shipments and serves as a critical chokepoint for the global supply of crude oil. For some time previously, the market had anticipated that U.S.-Iran tensions would likely remain at the level of economic sanctions, with limited risk of armed conflict. However, this latest direct strike on Iranian targets has shattered expectations of short-term de-escalation. Traders have begun to reprice the potential risks of disruptions to shipping through the strait and interruptions in crude oil transportation, directly driving up the geopolitical risk premium for crude oil.

2. U.S. API inventory draw exceeded expectations, providing bullish support to the fundamentals.

At 2:00 AM Beijing Time on September 2, the American Petroleum Institute (API) released inventory data for the week ending August 28. The data showed a decrease after an increase, exceeding market expectations and providing fundamental support for oil price increases: API crude oil inventory: decreased by 2.6 million barrels, compared to an increase of 4.2 million barrels in the previous period; API Cushing region crude oil inventory: increased by 0.2 million barrels; gasoline inventory: increased by 0.3 million barrels; distillate fuel inventory: decreased by 0.3 million barrels.

Following a substantial build-up in crude oil inventories last week, this week saw a noticeable drawdown, indicating a marginal tightening of the U.S. crude oil supply-demand balance in the short term. Gasoline inventories rose slightly, while distillate fuel inventories declined modestly; for now, there are no strong signals of significant shortages on the refined products side. As a leading indicator of EIA inventories, the API’s unexpectedly large drawdown this time has bolstered market expectations that official inventory data will also show tighter supplies. Coupled with geopolitical tensions driving prices higher, this development further fuels the upward momentum in oil prices.

3. The restraining forces at the macroeconomic level in China are limited.

The overall economic data, including some of the manufacturing PMI figures released on the day, did not show any significant signals of an unexpected downturn and did not create a clear negative impact from the demand side. At this stage, the impact of geopolitical news has significantly overshadowed the influence of macroeconomic fundamentals, with short-term oil price movements being driven by risk sentiment. However, after the rapid surge in oil prices, the market is also beginning to worry that higher energy costs could once again push up inflation, potentially constraining the pace of interest rate cuts by the Federal Reserve, and may suppress crude oil demand in the medium to long term. This expectation imposes some restraint on the upward potential of oil prices.

4. The supply and demand fundamentals have not yet undergone substantial changes.

The current global crude oil spot, OPEC+ production cut compliance, U.S. crude oil production, and commercial inventory fundamental data did not show significant changes on that day. This round of increase is driven by risk premium and supported by positive inventory, rather than a substantial reduction in actual crude oil supply. Whether oil prices can maintain their high levels will depend on whether the conflict between the U.S. and Iran further spills over and affects the safety of tanker shipping and strait passage.

III. Outlook for the Future Market

In the short term, crude oil analysts believe that the rise in geopolitical risks in the Middle East will significantly increase the volatility of the crude oil market, with trading logic closely following the subsequent actions of the U.S. and Iran. If Iran takes retaliatory actions and the conflict escalates further, the risk of the closure of the Strait of Hormuz will intensify, leading to a further surge in oil prices. Coupled with the continued drawdown of EIA crude oil inventories, the upward momentum of oil prices will be further strengthened. If both sides exercise restraint after this strike and the conflict does not escalate, the market's risk aversion sentiment will gradually ease, and the risk premium from the previous price increase is likely to dissipate, putting downward pressure on oil prices, which will return to being driven by fundamentals. Overall, the fluctuation in oil prices is expected to increase in the future.

Disclaimer: ECHEMI reserves the right of final explanation and revision for all the information.
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