U.S. Stock Futures Rebound: Why Futures for the 3 Major Indexes Rose Amid Iran Tensions and the CPI Factor
As of 2026-09-11 at 9:1 p.m. Korea time, what can be confirmed is a rebound in U.S. stock index futures, not a rise in New York's cash stock indexes. As of 6:58 a.m. U.S. Eastern Time, Dow futures were up 0.55%, S&P500 futures gained 0.53%, and Nasdaq100 futures rose 0.60%. The U.S. August Consumer Price Index (CPI) has not yet been released and is scheduled for publication at 9:30 p.m. Korea time.
It is also important to note that futures are rebounding after New York stocks declined for 4 consecutive trading sessions the previous day. Although tensions involving the United States and Iran have not been resolved, international oil prices have retreated somewhat from the previous day's sharp surge, temporarily easing pressure on the stock market.
Have U.S. Stocks Already Risen, or Are Only Futures Higher?
At this point, it would be inaccurate to say that the Dow, S&P500, and Nasdaq cash indexes have closed higher.
September 11 at 9:1 p.m. Korea time corresponds to 8:1 a.m. U.S. Eastern Time. The regular New York stock market session has not yet opened, so the figures currently available reflect premarket stock index futures movements rather than regular-session closing prices.
As of 6:58 a.m. U.S. Eastern Time, futures were moving as follows:
Dow E-mini futures: Up 286 points, 0.55%
S&P500 E-mini futures: Up 40.5 points, 0.53%
Nasdaq100 E-mini futures: Up 175.25 points, 0.60%
AP also confirmed that U.S. stock index futures were rising that day.
Therefore, when checking U.S. market conditions from Korea on the evening of September 11, it is more accurate to distinguish a 'rebound in U.S. stock futures' from a 'rise in U.S. stocks.'
The regular-session trend should be checked again after 10:30 p.m. Korea time.
Why Are Futures Rising Despite Continued Tensions With Iran?
The most notable development accompanying the futures rebound was a partial reversal of the previous day's sharp increase in international oil prices.
Brent crude fell more than 3% that day, trading around 103–104 dollars per barrel. U.S. West Texas Intermediate (WTI) crude also declined by approximately 3%, moving down toward 100 dollars.
The mood had changed compared with the previous day.
During the regular session on September 10, Brent crude exceeded 108 dollars per barrel intraday, while the S&P500 fell 0.6%, the Dow declined 0.6%, and the Nasdaq dropped 0.7%. By that point, the S&P500 had fallen for 4 consecutive trading sessions.
On 11, however, oil prices retreated from the previous day's highs, even though tensions involving the United States and Iran had not ended. With concerns growing that higher energy prices could increase inflation and interest-rate pressures, the decline in oil prices was a relatively favorable development for stocks ahead of the market opening.
Still, it would be difficult to interpret the move as evidence that Middle East risks had disappeared and stocks were therefore rising. Brent crude prices reported by AP remained around 104 dollars per barrel, while U.S. crude was still close to 100 dollars.
In other words, the market currently appears to be responding primarily to a temporary retreat in elevated oil prices, rather than an end to geopolitical tensions.
How Much Did U.S. Stocks Fall the Previous Day?
All 3 major indexes declined during the U.S. regular trading session on September 10.
The S&P500 fell 44.66 points, or 0.6%, to close at 7,591.70. The Dow Jones Industrial Average declined 316.56 points, or 0.6%, finishing at 52,064.10.
The Nasdaq Composite ended trading at 26,081.72, down 171.62 points, or 0.7%.
The weekly trend was also weak. Through the close on September 10, both the S&P500 and Nasdaq were down 1.6% for the week, while the Dow had declined 2.5%.
Therefore, the 0.5–0.6% range of gains in futures before the opening on 11 does not represent a complete recovery from the recent declines. It is important to recognize this as a rebound following the previous day's weakness.
Why Are International Oil Prices Important to the Stock Market?
In the current market, international oil prices have become more than simply a commodity price. They are a factor linking inflation with the outlook for U.S. interest rates.
On the morning of September 11, Brent crude had fallen to approximately 104 dollars from a level exceeding 108 dollars the previous day. U.S. crude was also observed trading below 100 dollars per barrel.
Nevertheless, oil prices remain elevated.
If international oil prices stay high, energy costs in transportation and production could add to inflationary pressure. This is also why Treasury yields have recently attracted considerable market attention.
The yield on the 10-year U.S. Treasury was around 4.94% on the morning of 11. The previous day, it had risen as high as 4.95% during trading.
When interest rates rise, bond yields increase, but companies may also face higher borrowing costs. That is why investors are currently monitoring oil prices, Treasury yields, and inflation indicators together rather than treating them as separate developments.
Why Is the CPI Release at 9:30 p.m. Important?
The next event to watch in the U.S. market on September 11 is the release of the U.S. August Consumer Price Index.
According to the official schedule of the U.S. Bureau of Labor Statistics, the August CPI is scheduled for release on 2026-09-11 at 8:30 a.m. U.S. Eastern Time. That corresponds to 9:30 p.m. Korea time on the same day.
At 9:1 p.m., the reference time for this article, the official results had not yet been released.
Therefore, the current rise in futures alone cannot establish the direction of the regular trading session. If the market's interpretation of inflation changes after the CPI release, both stock index futures and U.S. Treasury yields could move.
With a U.S. monetary policy meeting scheduled for the following week, investors will be watching how consumer inflation affects interest-rate expectations.
The key point is not to confuse pre-release forecasts with the actual CPI results. After 9:30 p.m., the market should be reassessed using the officially released figures.
Did Oracle and Nvidia Also Contribute to the Futures Rebound?
Among individual stocks, Oracle and Nvidia gained in premarket trading.
Oracle rose approximately 7% in premarket trading following its quarterly earnings announcement, while Nvidia also gained 0.8%.
Adobe, by contrast, fell more than 4%. ACV Auctions surged approximately 44% after news emerged of its acquisition agreement with Copart.
Movements in individual stocks can influence the indexes, but the three main factors affecting the broader market that day were falling oil prices, elevated Treasury yields, and anticipation of the CPI release.
It is difficult to explain the entire rise in futures for the 3 major indexes solely through the performance of a single technology stock.
What Should Investors Check Tonight, and in What Order?
Rather than judging the entire day's direction for U.S. stocks based only on current futures prices, it is better to follow developments in chronological order.
First, investors should check the official U.S. August CPI figures scheduled for release at 9:30 p.m. Korea time. Immediately after the release, it will also be important to monitor the direction of the 10-year U.S. Treasury yield alongside stock index futures.
Next, when the regular New York stock market session opens at 10:30 p.m. Korea time, investors can determine whether the 0.5–0.6% range of premarket futures gains translates into actual gains in the cash market.
International oil prices also require continued attention. Although Brent crude retreated to around 104 dollars that day, tensions between the United States and Iran remain unresolved, so it is too early to conclude that oil-price volatility has ended.
The current situation can be summarized in one sentence.
As of September 11 at 9:1 p.m. Korea time, the regular New York stock market session has not yet opened, and Dow, S&P500, and Nasdaq100 futures are rebounding in the 0.5–0.6% range as international oil prices give back part of the previous day's sharp gains. The first major turning point for determining the next direction will be the release of the U.S. August CPI at 9:30 p.m.
These figures do not guarantee investment outcomes. During periods when geopolitical conditions and inflation and interest-rate expectations can change rapidly, futures and the regular stock market may move in different directions.
※ This article is provided for informational purposes to help readers understand market developments and does not constitute an investment recommendation for any specific stock or asset. Final investment decisions and responsibility rest with the individual investor.
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