The U.S. stock market futures declined on Monday, March 23, 2026, extending a four-week losing streak amid escalating tensions between the U.S. and Iran. Dow Jones Industrial Average futures (YM=F) dropped 0.38%, S&P 500 futures (ES=F) fell 0.51%, and Nasdaq 100 futures (NQ=F) declined 0.64% today. This followed a week where the Dow and Nasdaq each lost around 2%, and the S&P 500 shed 1.5%, marking the longest losing streak for the Dow since 2023.
Geopolitical Escalation Intensifies
The market decline was driven by the war in Iran entering its fourth week, with risks escalating over the weekend. U.S. President Donald Trump has openly asserted that he is not planning to declare a ceasefire any time soon, as the violent rhetoric between the U.S. and Iran intensifies with slight signs of slowing. Moreover, the downturn was driven by Trump’s 48-hour ultimatum to Iran, demanding that the Strait of Hormuz be reopened or face U.S. attacks on Iranian power plants.
Iran retaliated with threats to target U.S. infrastructure, including the energy and desalination facilities in the Gulf, if the U.S. carried out its threat, heightening fears of a broader conflict. The U.S. military deployed a huge amphibious assault ship with thousands of additional Marines and sailors to the Middle East. On the other end, Iran’s new leader, Mojtaba Khamenei, hailed Iran’s unity and resistance.
Oil prices continued to surge, with attacks on Iran’s South Pars gas field, along with the world’s largest gas plant in Qatar as well as oil refineries in Saudi Arabia and Kuwait, with Brent crude (BZ=F), the global benchmark, rising above the $110 per barrel, up 1.53%, and West Texas Intermediate (CL=F) crude climbing to about $98.73, fueling inflation concerns and reducing expectations of the near-term Federal Reserve rate cuts.
While gold fell sharply, erasing this year’s gains and posting its largest weekly drop since 1983, pressured by escalating inflation risks and stronger U.S. dollar demand amid the crisis. The tech stocks are also facing further potential pressure, with analysts warning of a possible final sell-off in semiconductors before a rebound.
The market outlook is increasingly defensive, with expectations of short-term and long-term inflation. Investors are also closely watching support levels. Moreover, for the first time since May, the S&P 500 broke below its 200-day moving average last week. Nasdaq and Dow were also below their 200-day moving average, underscoring a loss of momentum in the market.
Prolonged War Risks Broader Market Correction
The Russell 2000 ended 10.3% down last week, breaking a high reached on January 22, confirming the index has been correcting since that date. Today, the index is trading 2.26% below. Additionally, Wall Street’s most valuable companies, like Nvidia, Alphabet, Tesla, Meta Platforms, and Microsoft, all experienced a decline, losing ground.
The U.S. Treasury bonds fell for the third session, stepping into a broader sell-off in the UK and European government bonds, as the Middle East conflict kept the oil prices elevated and reinforced inflation worries. The stagflation has also led the emerging markets to plunge, with the MSCI Emerging Markets Index down 2.5%. However, the defense spending could rise toward Trump’s proposed $1.5 trillion budget, increasing the U.S. deficits and pushing long-term Treasury yields higher, pressuring the equities and bonds.
The market is expecting short-term volatility to persist, while long-term fundamentals remain intact. The duration of the Iran conflict will be the key determinant of whether current pullbacks turn into a deeper correction. A de-escalation could trigger a sharp rebound, but a prolonged war risks structural economic damage and a broader risk-off move.
