The joint U.S.-Israeli strikes on Iran over the weekend of March 1, 2026 created an immediate and dramatic split on Wall Street: defense contractors, oil producers, and cybersecurity firms surged while airlines, cruise lines, and hotels took a beating. Northrop Grumman jumped 6%, RTX Corporation climbed 4.7%, and Lockheed Martin gained 3.37% on Monday alone. Meanwhile, United Airlines tumbled more than 6%, Norwegian Cruise Line Holdings cratered 10%, and Brent crude hit a 52-week high above $78 a barrel. The S&P 500, after a wild session of intraday swings, ended Monday up a razor-thin 0.04% at 5,881.62 as dip-buyers stepped in late.
The conflict began Saturday when joint U.S.-Israeli forces struck Iranian nuclear, military, and command facilities. Intelligence sources reported the death of Iran’s Supreme Leader Ayatollah Ali Khamenei, sending shockwaves through global markets before U.S. exchanges even opened. What followed was a textbook wartime rotation: money flooded into hard assets, defense plays, and safe havens while anything tied to international travel and consumer discretionary spending got crushed. This article breaks down every major winner and loser, sector by sector, and examines what these moves mean for ordinary investors trying to navigate a market that just got a lot more dangerous.
Table of Contents
- Which Defense Stocks Gained the Most From the Iran War?
- How Did Oil and Energy Stocks React to the Iran Strikes?
- Why Airlines and Travel Stocks Were Hit Hardest
- Safe Havens and the Flight to Quality — What Worked and What Didn’t
- Cybersecurity Stocks and the Less Obvious Winners
- What Monday’s Flat Close Actually Tells Us
- What Investors Should Watch This Week
- Conclusion
- Frequently Asked Questions
Which Defense Stocks Gained the Most From the Iran War?
Defense contractors were the clearest and most immediate beneficiaries. The iShares Aerospace & Defense ETF (ITA) is now up over 80% year-to-date, a staggering run that reflects not just this weekend’s escalation but months of rising geopolitical tension that preceded it. Among individual names, Lockheed Martin is up nearly 40% on the year while Northrop Grumman has gained over 30%. Monday’s session added fuel to a fire that was already burning hot. Palantir, the data analytics firm with deep ties to the U.S. intelligence community, surged 6% on Monday.
That move makes sense given the company’s role in military planning and intelligence synthesis, exactly the kind of capabilities in demand during an active conflict. The company has increasingly positioned itself as a wartime technology provider rather than a traditional defense contractor, which gives it a different risk profile. Traditional defense primes like Lockheed and Northrop benefit from hardware procurement cycles that take years to play out. Palantir’s software contracts can scale faster, but they are also more vulnerable to political shifts if the conflict de-escalates quickly. One important caveat for investors chasing these gains: defense stocks tend to spike on the initial shock of conflict and then settle as markets digest the actual scope of military spending. The first Gulf War, the 2003 Iraq invasion, and the early days of Ukraine all produced sharp defense rallies followed by periods of consolidation. Buying after a 6% gap-up is a very different proposition than having owned these names heading into the weekend.
How Did Oil and Energy Stocks React to the Iran Strikes?
Oil was the other obvious winner. Brent crude surged as much as 13% Sunday evening before paring gains, ultimately settling at a 52-week high above $78. Iran is a significant oil producer and any disruption to Persian Gulf shipping lanes threatens a substantial portion of global supply. Exxon Mobil and Chevron shares each gained about 4%, ConocoPhillips rose more than 5%, and Occidental Petroleum climbed 2.3%. However, the oil story is more complicated than it appears on the surface. If the conflict remains contained to strikes on Iranian territory without escalating into a broader regional war that shuts down the Strait of Hormuz, the supply disruption may be limited.
Iran’s oil exports have already been curtailed by years of sanctions, meaning the marginal barrels actually at risk are smaller than headlines suggest. Conversely, if Iran retaliates by mining shipping lanes or attacking Gulf state oil infrastructure, crude could spike well beyond current levels. The 13% Sunday evening surge that pulled back to a more modest gain by Monday’s close suggests markets are pricing in some probability of containment rather than full escalation. For American consumers, the more immediate concern is gasoline prices. Even a sustained move to $80-plus Brent translates into meaningfully higher prices at the pump, which acts as a tax on consumer spending and could weigh on the broader economy. That knock-on effect is part of why the S&P 500 struggled to hold gains despite the defense and energy rallies.
Why Airlines and Travel Stocks Were Hit Hardest
The travel sector absorbed the worst damage on Monday, and the numbers tell the story plainly. United Airlines, the most exposed U.S. carrier to international routes, fell more than 6%. American Airlines and Delta each dropped more than 5%. Overseas, International Consolidated Airlines Group, which owns British Airways, fell more than 5%, and European tour operator TUI AG plunged 9.3%. The operational disruption is real and immediate. More than 11,000 Middle East flights have been canceled since the strikes, according to aviation-data firm Cirium.
Airlines rerouting around Iranian and Iraqi airspace face longer flight times, higher fuel costs, and reduced capacity on some of their most profitable long-haul routes. For carriers like United and British Airways that generate significant revenue from Middle Eastern and Asian routes, this is not just a sentiment problem but a direct hit to the income statement. Cruise lines got hammered even harder on a percentage basis. Norwegian Cruise Line Holdings fell 10%, Carnival Corp. lost more than 7%, and Royal Caribbean dropped 3%. The cruise industry is particularly sensitive to geopolitical fear because customers book months in advance and cancellations spike immediately when conflict erupts. Hotels and online travel agencies followed the same pattern: Marriott slid nearly 5%, Hilton lost close to 3%, Airbnb sank more than 3%, Expedia fell more than 4%, and Booking Holdings dropped more than 3%.
Safe Havens and the Flight to Quality — What Worked and What Didn’t
Gold and the U.S. dollar both rallied, following the traditional safe-haven playbook. Gold prices rose 2%, trading at their highest level in a month. The U.S. dollar index gained 0.95%, erasing its losses for the year and hitting a five-week high. Both moves are textbook responses to geopolitical shock: investors sell risk assets and park money in stores of value. But there is an important tradeoff here.
A stronger dollar hurts U.S. multinational earnings when they translate foreign revenue back into dollars, which partially offsets whatever relief investors feel from holding greenbacks. Gold, meanwhile, pays no yield, so holding it during a period when Treasury rates remain elevated means accepting significant opportunity cost. Investors who piled into gold after previous geopolitical shocks, including the initial Russia-Ukraine escalation in 2022, often saw those gains evaporate within weeks as the fear premium faded. The question is whether this conflict has staying power or whether it follows the historical pattern of sharp spike followed by normalization. Notably, bonds did not behave entirely as expected. While the dollar surged, Treasury yields did not drop as dramatically as a pure flight-to-safety trade would predict. That may reflect ongoing concerns about inflation from higher oil prices, which would complicate the Federal Reserve’s path and keep rates elevated even as growth risks mount.
Cybersecurity Stocks and the Less Obvious Winners
Beyond the headline defense and energy plays, cybersecurity stocks emerged as a less obvious but potentially significant beneficiary. CrowdStrike and Palo Alto Networks are expected to benefit as security experts warned of heightened risk of Iranian state-sponsored cyberattacks against U.S. financial infrastructure. Iran has a well-documented history of retaliatory cyber operations, including attacks on U.S. banks in 2012 and 2013 and destructive malware campaigns against Saudi Aramco.
The warning here is that cybersecurity stocks often get a sentiment boost from geopolitical tension that does not always translate into immediate revenue. Government contracts move slowly, and most Fortune 500 companies already have cybersecurity vendors in place. A real uptick in Iranian cyber aggression could accelerate purchasing decisions, but the stocks may be pricing in threat potential rather than confirmed demand. Investors should be cautious about paying up for cybersecurity names solely on the basis of war headlines without confirming that the spending cycle is actually accelerating. Tech leaders Nvidia and Microsoft also posted gains of roughly 3% and 2% respectively, contributing to the late-day market recovery. Those moves likely reflect general dip-buying in mega-cap names rather than any direct Iran-related catalyst, but they underscore how the largest tech companies continue to act as a stabilizing force for the broader indexes.
What Monday’s Flat Close Actually Tells Us
The S&P 500 finishing up just 0.04% after sharp intraday losses is arguably the most revealing data point of the day. It tells us that while the initial reaction was fear-driven selling, there is still a cohort of investors willing to buy the dip on the assumption that the conflict will be contained. Historical precedent supports that instinct.
Markets have generally recovered quickly from geopolitical shocks, with the notable exception of events that trigger sustained economic disruption like the 1973 oil embargo. But this time may present a different risk profile. The reported death of Iran’s Supreme Leader, if confirmed, creates a power vacuum and succession crisis that could make the situation more unpredictable, not less. Markets hate uncertainty more than bad news, and a leaderless Iran facing internal chaos while under military attack is about as uncertain as it gets.
What Investors Should Watch This Week
The next several days will be critical for determining whether Monday’s moves were a one-day event or the beginning of a sustained repricing. The key variables are straightforward: Does Iran retaliate, and if so, how? Does the conflict spread to involve other regional actors like Hezbollah or Houthi forces? And does oil supply actually get disrupted, or does the market calm down as it becomes clear that physical barrels are still flowing? Investors with long time horizons and diversified portfolios should be cautious about making dramatic changes based on a single weekend of headlines.
The worst financial decisions tend to happen when people react emotionally to geopolitical events. That said, anyone with concentrated exposure to travel stocks or heavy reliance on international revenue should be stress-testing their positions. The defense and energy trades may have further to run if escalation continues, but they are also the most crowded trades on the board right now, and crowded trades have a way of reversing violently when the narrative shifts.
Conclusion
Monday’s market action painted a stark picture of wartime economics on Wall Street. Defense contractors, oil producers, cybersecurity firms, and safe-haven assets absorbed the inflows while airlines, cruise lines, hotels, and travel platforms bore the brunt of the selling. The S&P 500’s near-flat close masked enormous sector-level dispersion and a level of intraday volatility that reflects genuine uncertainty about what comes next.
For everyday investors, the practical takeaway is that geopolitical risk is no longer theoretical. The Iran conflict has created clear winners and losers, and the rotation between them could intensify or reverse depending on how the situation evolves in the coming days. Diversification, a focus on quality, and the discipline to avoid panic selling remain the best tools available. The market has survived wars before, but it has never done so without testing investors’ nerves first.
Frequently Asked Questions
Should I sell my airline stocks now that the Iran conflict has started?
Airline stocks have already priced in significant damage, with names like United down more than 6% in a single session. Selling after a sharp drop locks in losses. Historically, travel stocks recover once geopolitical fear subsides, but if the conflict escalates to close the Strait of Hormuz or expand flight cancellations, further downside is possible. The decision depends on your time horizon and whether you can tolerate additional short-term pain.
Are defense stocks still a good buy after Monday’s rally?
Defense stocks have been rallying for months, with the ITA ETF up over 80% year-to-date. Monday’s gains added to already elevated valuations. While sustained conflict would support further defense spending, buying after a gap-up on war headlines carries meaningful risk if the situation de-escalates. Dollar-cost averaging is a safer approach than chasing a single-day spike.
How high could oil prices go if the Iran war escalates?
Brent crude surged as much as 13% before settling at a 52-week high above $78. If the Strait of Hormuz is disrupted, analysts have previously estimated oil could spike to $100 or beyond, since roughly 20% of global oil supply transits through the strait. A contained conflict would likely see prices settle back as the initial fear premium fades.
Will the Iran war cause a recession?
It is too early to say. Higher oil prices act as a drag on consumer spending and corporate margins, but the U.S. economy entered this crisis from a position of relative strength. Past geopolitical conflicts have rarely caused recessions on their own, though the 1973 oil embargo is a notable exception. The severity and duration of the conflict will determine the economic impact.
What about cybersecurity investments given the threat of Iranian retaliation?
Iran has a documented history of launching cyberattacks in response to military action. CrowdStrike and Palo Alto Networks are among the companies expected to benefit from increased security spending. However, cybersecurity stocks often rally on fear and then give back gains if the expected attack wave does not materialize. Look for confirmation of actual spending increases before committing significant capital.