Stock futures were little changed on Sunday night as markets absorbed a sharp escalation in U.S.-Iran tensions, after major U.S. benchmarks posted a fourth consecutive weekly loss. President Donald Trump issued an ultimatum threatening strikes on Iranian power plants if the Strait of Hormuz is not reopened, and Tehran in turn warned it would target U.S. infrastructure, including energy and desalination facilities. Oil prices rose early Sunday, with West Texas Intermediate trading near $98.73 per barrel and Brent around $112.76, lifting energy shares even as indexes struggled. Investors faced a lineup of economic data this week, including the S&P Global Flash U.S. PMI, as traders weighed geopolitical risk against technical support levels.
Key Takeaways
- Stock futures were mixed Sunday night: Dow futures hovered around flat, S&P 500 futures fell about 0.1%, and Nasdaq-100 futures slipped roughly 0.2%.
- Geopolitical escalation continued in the fourth week of the U.S.-Iran war after President Trump threatened attacks on Iranian power plants and Iran warned of strikes on U.S. Gulf infrastructure.
- Crude oil rose on the news: WTI climbed to $98.73 per barrel and Brent reached $112.76, both up about 0.5% in early trading.
- Major indexes posted weekly declines: the Dow and Nasdaq fell about 2% each last week, and the S&P 500 lost 1.5%; the Dow recorded its first four-week losing streak since 2023.
- The S&P 500 dropped below its 200-day moving average last week for the first time since May, a key technical red flag for some investors.
- Energy is the lone S&P 500 sector in positive territory since the war began, up 5.9%, and is up 31.8% year to date.
- Market strategists warned of potential risk-off flows ahead of a heavy slate of global PMI data, which could expose broader macro weakness.
Background
The current market reaction stems from a rapid escalation in hostilities that entered its fourth week. The Strait of Hormuz, a crucial artery for global oil shipments, has been central to recent tensions because a large share of seaborne crude transits that passage; any sustained disruption tends to lift energy prices and reorder risk premia. Over the past month, investors have rotated toward energy as a safe harbor for commodity exposure while other sectors, particularly technology, have shown greater sensitivity to risk-off moves.
On the technical front, the S&P 500’s slide below its 200-day moving average is meaningful for trend-following funds and some institutional asset allocators that use that gauge as a stop or reallocation trigger. The Dow’s first four-week losing streak since 2023 underscores the unusual breadth of recent weakness across benchmarks. At the same time, macro data coming this week — notably the S&P Global Flash U.S. PMI — will be watched for early signs that rising energy costs are seeping into activity and business sentiment.
Main Event
Over the weekend President Trump publicly warned that the U.S. could target Iranian power plants if Tehran did not reopen the Strait of Hormuz, a move that immediately elevated the perceived odds of disruption to Gulf energy flows. Iran responded by saying it would aim at U.S. infrastructure in the Gulf, highlighting energy and desalination facilities as potential targets if strikes proceed. Those direct threats intensified a risk-off tone across early global trading and lifted volatility expectations in oil and certain sectors.
Market data on Sunday showed futures trading mixed: Dow futures around the flatline, S&P 500 futures down around 0.1%, and Nasdaq-100 futures off roughly 0.2%. Investors also reacted to renewed concerns that the conflict could raise energy costs and squeeze margins for energy-intensive industries. Portfolio managers told clients they were reassessing exposure to cyclical and growth segments while trimming risk in some equity strategies.
Energy stocks were the notable outperformers amid the escalation, with the sector up 5.9% since hostilities began and 31.8% year to date. Traders pointed to the narrow market leadership as a signal of uneven conviction: flows into oil-related names contrasted with hesitancy to re-enter beaten-down cyclicals. Technical strategists flagged key support levels and the potential for further downside if key ETFs or indices break critical price points this week.
Analysis & Implications
Higher oil prices raise two central risks for markets: a near-term hit to consumer and business costs, and second-round effects on growth if central banks tighten policy to counter fuel-driven inflation. At roughly $98.73 for WTI and $112.76 for Brent, energy costs are materially higher than earlier in the year and could push headline inflation metrics higher in coming months. That, in turn, would complicate central bank messaging already sensitive to mixed economic data.
Technically, the S&P 500’s breach of the 200-day moving average is significant for momentum-based strategies and risk-parity funds that rebalance by volatility and trend. A sustained break could force additional selling from systematic strategies, deepening the slide. Conversely, if indices stabilize around current levels and buyers step in, the market could rebase and push toward a selective rebound led by sectors with stronger earnings prospects.
Sector rotation dynamics are also in focus. Fund managers report a reluctance to chase the energy rally amid fear of volatile oil headlines reversing quickly, while analysts see potential buying opportunities on weakness. In technology, strategists at Fundstrat and others warn semiconductors could be vulnerable to a delayed rotation lower if macro weakness persists, potentially extending pressure into April or May before a larger recovery in the summer.
Comparison & Data
| Series | Last Week Move | YTD |
|---|---|---|
| Dow Jones Industrial Average | -~2% | Varies by composition |
| S&P 500 | -1.5% | Below 200-day MA |
| Nasdaq | -~2% | Tech weakness |
| WTI crude | +$0.5% (to $98.73) | Elevated vs. earlier months |
| Brent crude | +$0.5% (to $112.76) | Elevated vs. earlier months |
| Energy sector (S&P) | +5.9% since war began | +31.8% YTD |
The table highlights the contrast between commodity-driven gains and broad equity weakness. Energy’s sharp year-to-date advance stands in contrast to the multi-week declines in major indices, illustrating concentrated leadership rather than broad-based market strength. Investors will monitor whether energy’s gains are durable or simply a short-term risk premium tied to heightened geopolitical risk.
Reactions & Quotes
Analysts and strategists emphasized the risk-off implications and the potential for technical selling to accelerate if macro data disappoints. Several market participants warned that portfolio de-risking could persist into this week.
“Clearly, Iran is not backing down. The risk-off sentiment could worsen substantially this week, with the first visible macro effects in a deluge of global PMI data. Portfolio de-risking could continue, making cash a viable asset again.”
Ben Emons, Fed Watch Advisors
Investment banks noted investor reluctance to chase the energy breakout amid concern that a single headline could trigger a sharp oil reversal, and they recommended disciplined exposure rather than full allocation increases.
“We sense reluctance among investors to embrace the Energy sector’s breakout, driven by fears a single headline could trigger a sharp oil reversal. Maintain exposure and buy weakness.”
Ari Wald, Oppenheimer
Technical strategists flagged specific levels in semiconductors and other cyclicals that could signal a deeper rotation if broken, warning of a possible late‑spring selloff before a summer recovery scenario if conditions follow their model.
“If the SMH breaks below $369, there could be a rotation lower across Memory, Optical and many Semi-cap Equipment stocks before the market bottoms.”
Mark Newton, Fundstrat
Unconfirmed
- Details on any specific U.S. military timing or the exact targets of potential strikes remain unverified; official operational plans have not been publicly released.
- The scope and precise nature of Iran’s threatened strikes on U.S. infrastructure, including which facilities might be targeted, lack independent confirmation.
- Predictions about how soon macro data (PMI prints) will translate into visible market stress are model-based and not yet evidenced in consensus economic outcomes.
Bottom Line
Markets opened the week with a cautious tone as geopolitical escalation between the U.S. and Iran raised the odds of a sustained period of elevated oil prices and risk aversion. The S&P 500’s slide below its 200-day moving average and the Dow’s four-week losing streak are technical signals that could prolong volatility, particularly if global PMI data disappoints.
Investors should watch three near-term items: headline risk from the Gulf, this week’s S&P Global Flash U.S. PMI, and key technical support levels in major indexes and sector ETFs. Portfolio managers may maintain selective energy exposure while managing downside risk elsewhere until clearer signs of stabilization appear.
Sources
- CNBC (news) — original market update and reporting on futures, oil prices and strategist comments
- Fed Watch Advisors (investment research) — commentary from CIO Ben Emons
- Oppenheimer (investment bank) — notes from Ari Wald on Energy sector dynamics
- Fundstrat (investment research) — technical views from Mark Newton on semiconductors