US Stock Futures Slip: Iran Conflict, CPI and Oil in 2026

Why US futures turned cautious again

US equity futures traded lower after fresh headlines from the Middle East, with reports of Iran firing missiles at Israel adding to risk-off positioning. Futures tied to the Dow Jones Industrial Average were down 80 points, or 0.2%. S&P 500 futures and Nasdaq 100 futures were also lower by about 0.2% in the same window. In another update later on Wednesday evening (India time), futures were down more sharply as oil prices rose on renewed US-Iran tensions. At around 5:35 pm IST, S&P 500 futures were down 1.06% and Nasdaq 100 futures declined 1.62%. Dow futures fell 0.89%, pointing to a weaker open for Wall Street later in the day.

Middle East risk and oil: what markets reacted to

The tone in futures was shaped by a mix of military escalation and energy-market concerns. One set of reports said US stock futures plunged after reports that the US launched strikes against Iran, following President Donald Trump’s comments that negotiations were taking “too long.” Separately, another update said the US struck Iran in retaliation after Iran shot down an American Apache helicopter near the Strait of Hormuz, increasing doubts about a potential peace deal. Alongside these reports, oil prices were described as surging, with one mention noting oil climbing back above $105 a barrel. Another update pegged oil at about $14-$15 a barrel. The common thread across the headlines was that higher crude prices were feeding inflation concerns and amplifying volatility in equity futures.

Investors’ near-term focus: May CPI and rate expectations

Beyond geopolitics, investors were positioned ahead of key US inflation data that could influence expectations for interest rates. Markets were awaiting May consumer price index (CPI) figures for clues on whether higher energy prices linked to the Iran conflict were showing up in broader inflation. This caution was reinforced after last week’s stronger-than-expected US jobs data raised concerns about the possibility of further Federal Reserve rate hikes. In a market commentary included in the material, yields reacted strongly to jobs data, with the two-year yield up about 11 basis points and the 10-year yield up six basis points. The same commentary said markets were pricing in a “full rate hike in 2026” after those data points. That combination of higher yields, oil-driven inflation risk, and geopolitical uncertainty weighed on risk appetite.

What the CPI report showed in the latest release

On Wednesday, a CPI update described a sharp rise in annual inflation, while also noting that much of the increase came from energy. Headline CPI rose 0.5% month-on-month and 4.2% year-on-year in May, matching estimates, and marking the highest annual reading since April 2023. Core CPI rose 0.2% month-on-month and 2.9% year-on-year, versus estimates of 0.3% and 2.9%, respectively. Energy prices surged 23.5% year-on-year in May, while gasoline soared 40.5%. The material also said more than 60% of the increase in annual headline inflation was due to energy. Even as the geopolitical backdrop stayed tense, one note said the inflation report largely aligned with investor expectations and was not seen as adding further pressure on the Fed to raise rates.

How Wall Street traded as tensions escalated

Risk aversion showed up in cash-market moves as well, not just in futures. In one session described as Wednesday afternoon trading, the Dow Jones Industrial Average was down 953 points, or 1.9%, while the Nasdaq composite was down 2%. Another market wrap for Wednesday said the S&P 500 shed 1.6% to close at 7,267.65, the Nasdaq Composite fell 2% to 25,169.50, and the Dow plunged 1.9% to settle at 49,919.09. The same coverage noted that industrial stocks were the worst hit within the S&P 500, contributing to a decline of about 1.6%. Semiconductor stocks were also described as extending losses into a second straight session. These moves reflected a market balancing inflation data that was broadly in line with expectations against an increasingly unstable geopolitical picture.

Tech volatility and the prior sharp sell-off

The material also referenced a steep decline in US equities on a Friday session that ended a nine-week winning streak. The Dow declined 695.15 points, or 1.35%, to 50,866.78. The S&P 500 slipped 200.57 points, or 2.64%, to 7,383.74. The Nasdaq Composite closed 1,121.53 points, or 4.18%, lower at 25,709.43, with one additional note summarising the Nasdaq down about 4%. That session was described as being driven by a sharp slump in technology stocks. Taken together with subsequent CPI and geopolitical headlines, the picture was of a market that had become more sensitive to rate expectations and to any catalyst that could lift energy prices.

Another session showed record highs before tensions rose

In contrast to the sell-off described above, another Friday session in the material showed US equities ending higher, with the S&P 500 and Nasdaq hitting record highs on gains in AI-related stocks. The Dow rose 0.02% to 49,609.16, the S&P 500 gained 0.84% to 7,398.93, and the Nasdaq rose 1.71% to 26,247.08. This contrast highlights how quickly sentiment shifted as investors re-priced risks tied to geopolitics, oil, inflation prints, and interest rates. It also underlines why futures reaction to Middle East headlines was immediate and sharp.

Key figures at a glance

Market impact: what mattered for investors

The most direct transmission channel from the Middle East conflict into markets was through crude oil prices. Higher oil prices can lift near-term inflation readings, complicating the path for interest rates even if core inflation remains steadier. That mattered because markets were already sensitive to the policy outlook after stronger-than-expected jobs data pushed yields higher, with the two-year yield up about 11 basis points and the 10-year yield up six basis points in the commentary cited. Against that backdrop, the material noted that markets were pricing in a full rate hike in 2026. Equity declines, especially in tech-heavy benchmarks, fit that pattern because growth stocks tend to be more sensitive to rate expectations. Sector-wise, industrial stocks were singled out as the worst hit in the S&P 500 in one of the Wednesday sessions, and semiconductors were mentioned as extending declines.

Conclusion: what to watch next

Across the updates, US equities faced a combination of rising geopolitical risk, volatile oil prices, and a steady drumbeat of macro data that could shift the Fed outlook. Futures moves ranged from modest declines of around 0.2% to deeper drops of over 1% in S&P 500 futures and 1.6% in Nasdaq 100 futures at one point on Wednesday evening (India time). With May CPI showing 4.2% headline inflation and a large energy contribution, the market focus remained on how energy costs filter into broader inflation and rates. The next immediate catalyst cited in the material was the May CPI report itself, and the ongoing read-through from jobs data into rate expectations. Developments around the Strait of Hormuz and any shift in US-Iran engagement remained the key swing factor for oil and risk sentiment.