Wall Street reprices U.S. stocks as Iran war drives largest oil disruption in decades

Overview

The S&P 500 sat near record highs at the end of February. Five weeks later, after a U.S.-Israeli air campaign shut down the world's most important oil chokepoint, the index has shed roughly 4% and Wall Street's biggest banks are cutting their forecasts for the rest of 2026. UBS Global Wealth Management lowered its year-end target from 7,700 to 7,500 on April 7, following Wells Fargo's steeper cut from 7,800 to 7,300 a week earlier.

Why it matters

Higher oil prices from the Hormuz closure are delaying Fed rate cuts and squeezing household budgets, with gas up 31% in six weeks.

Key Indicators

~$113

Brent crude per barrel

Up from roughly $65 before the conflict began, after peaking at $126 in early March

−4%

S&P 500 decline since Feb 28

Index fell from approximately 6,879 to 6,582 as of April 7

7,500

UBS year-end S&P 500 target

Cut from 7,700, implying roughly 14% upside from current levels

$3.84

National average gas price per gallon

Up from $2.92 six weeks earlier, a 31% increase hitting consumer wallets directly

$310

UBS 2026 S&P 500 earnings-per-share forecast

Unchanged despite the target cut, reflecting confidence in underlying corporate profitability

Interactive

Exploring all sides of a story is often best achieved with Play.

Ever wondered what historical figures would say about today's headlines?

Debate Arena

Two rounds, two personas, one winner. You set the crossfire.

People Involved

Mark Haefele

Issued revised S&P 500 targets on April 6, 2026

Ohsung Kwon

Issued steeper S&P 500 target cut on March 31

Austan D. Goolsbee

Publicly warning that Iran war inflation complicates rate cuts

Organizations Involved

UBS Global Wealth Management

Investment Bank / Wealth Management

Lowered S&P 500 targets but maintained 'attractive' rating on U.S. equities

The wealth management arm of Swiss bank UBS, one of the world's largest managers of private assets, whose market outlooks influence institutional and retail allocation decisions globally.

Board of Governors of the Federal Reserve System

Central Bank

Holding rates steady; rate cut timeline pushed back by oil-driven inflation

The United States central bank, whose interest rate decisions directly affect equity valuations, borrowing costs, and investor risk appetite.

Timeline

UBS cuts S&P 500 year-end target to 7,500 from 7,700
Market

UBS Global Wealth Management lowered both its mid-year and year-end targets, citing sustained high oil prices, but maintained its 'attractive' rating on U.S. equities and kept its $310 earnings-per-share forecast.
Today
Wells Fargo drops rate cut expectations for 2026 entirely
Policy

Wells Fargo became the first major bank to forecast zero Federal Reserve rate cuts in 2026, citing the persistence of war-driven inflation pressures.
Yesterday
Wells Fargo slashes S&P 500 target by 500 points to 7,300
Market

Wells Fargo equity strategist Ohsung Kwon issued the steepest Wall Street target cut of the conflict, warning that economic damage was building 'exponentially' with each day the war continued.
7 days ago
Federal Reserve holds rates steady, raises inflation outlook
Policy

The Fed kept interest rates unchanged and revised its 2026 inflation projections higher, citing energy price uncertainty. Chair Powell described the oil shock as potentially temporary.
March 18th, 2026
Iran's IRGC vows 'not a litre of oil' will pass through Hormuz
Statement

The Islamic Revolutionary Guard Corps publicly doubled down on its blockade, warning that no oil would transit the strait while hostilities continued.
March 11th, 2026
Brent crude surpasses $126 per barrel
Market

Oil prices hit their highest level in the conflict as markets absorbed the full impact of the Hormuz closure. Brent crossed $100 for the first time in four years on the same day.
March 8th, 2026
Iran declares Strait of Hormuz closed to shipping
Escalation

The Islamic Revolutionary Guard Corps began attacking ships attempting to transit the strait, effectively shutting down the passage through which roughly 20% of the world's oil supply flows.
March 4th, 2026
S&P 500 opens sharply lower on first trading day after strikes
Market

U.S. equities sold off as investors priced in the risk of a wider conflict and potential oil supply disruptions. Oil prices surged above $90 per barrel.
March 3rd, 2026
U.S. and Israel launch Operation Epic Fury against Iran
Military

Joint U.S.-Israeli forces struck nearly 900 targets in the first 12 hours, hitting military facilities, nuclear sites, and leadership compounds. Supreme Leader Ali Khamenei was killed in an Israeli air attack.
February 28th, 2026 • Morning (local)
Omani diplomat announces nuclear 'breakthrough' with Iran
Diplomacy

Omani foreign minister Badr Al-Busaidi said Iran had agreed to never stockpile enriched uranium and to accept full International Atomic Energy Agency verification. The deal collapsed within 24 hours.
February 27th, 2026
Iran accelerates oil exports ahead of expected conflict
Escalation

Iran tripled its oil export rate between February 15 and 20, drawing down storage to reduce vulnerability to infrastructure strikes.
February 15th, 2026

Scenarios

Ceasefire restores Hormuz transit, oil drops below $80, stocks rally to meet original targets

Discussed by: UBS Global Wealth Management, Goldman Sachs equity research, CNBC market analysts

If hostilities end in April or early May and shipping through the Strait of Hormuz resumes, oil prices could fall sharply toward pre-war levels. This would remove the inflation overhang, allow the Fed to resume rate cuts, and restore the earnings-driven bull case. Wall Street's 1990 Gulf War playbook—where the S&P 500 jumped 3.7% the day Desert Storm launched and rallied 26% over the following year—is the template bulls are citing. UBS keeping its $310 earnings forecast and 'attractive' rating suggests this is close to its base case.

War drags past summer, oil stays above $100, S&P 500 stalls below 7,000

Discussed by: Wells Fargo Investment Institute, EY-Parthenon chief economist Gregory Daco, TheStreet analysis

If the conflict persists and Hormuz remains effectively closed through mid-2026, elevated energy prices would compress consumer spending, erode corporate margins outside the energy sector, and force the Fed to hold rates steady or even consider hikes. Wells Fargo's decision to abandon all rate cut expectations for 2026 reflects this risk. In this scenario, earnings estimates would need to come down, and the current ~4% drawdown could deepen into a proper correction of 10% or more.

Oil spikes above $150 as conflict expands, triggering stagflation and a bear market

Discussed by: Bloomberg scenario analysis, Dallas Federal Reserve research, Congressional Research Service

The worst case involves escalation beyond Iran—Houthi attacks on shipping, damage to Saudi infrastructure, or a broader regional conflict that keeps Hormuz closed indefinitely. Analysts have modeled oil at $200 per barrel in extreme scenarios. This would push the U.S. economy toward stagflation: simultaneous rising prices and slowing growth, the combination most hostile to equity valuations. The International Energy Agency has already called this the largest supply disruption in the history of the global oil market.

AI earnings boom offsets oil drag, tech-led rally lifts S&P 500 despite elevated crude

Discussed by: UBS 'escape velocity' thesis, Goldman Sachs AI revenue forecasts, Motley Fool analysis

Even with oil above $100, the artificial intelligence investment cycle could power enough earnings growth in the technology sector to pull the broader index higher. UBS's decision to maintain its $310 earnings-per-share forecast despite cutting the price target implicitly relies on this dynamic. If the Magnificent Seven tech stocks deliver on AI monetization while energy companies benefit from high crude prices, the S&P 500 could grind higher even without a peace dividend—though gains would be narrower and more concentrated.

Historical Context

Iraq's invasion of Kuwait and the Gulf War oil shock (1990–1991)

August 1990 – February 1991

What Happened

When Iraqi forces invaded Kuwait on August 2, 1990, oil prices doubled from roughly $21 to $46 per barrel within weeks as markets feared Saddam Hussein would next target Saudi Arabia's oil fields. The S&P 500 fell 18% between July and October 1990.

Outcome

Short Term

The Fed cut rates six times as a mild eight-month recession took hold. Oil prices crashed 33% the day Operation Desert Storm launched in January 1991.

Long Term

The S&P 500 rebounded 26% in 1991 once the conflict ended and crude collapsed. The rapid recovery cemented the Wall Street playbook that geopolitical sell-offs are buying opportunities.

Why It's Relevant Today

Wall Street strategists are explicitly citing the 1990 playbook to argue that the Iran war drawdown is temporary. The key difference: the Strait of Hormuz handles four times more oil traffic than Kuwait's exports did, making the current supply disruption structurally larger.

The 1973 Arab oil embargo (1973–1974)

October 1973 – March 1974

What Happened

After the United States supported Israel during the Yom Kippur War, the Organization of Arab Petroleum Exporting Countries imposed an embargo that quadrupled oil prices from about $3 to $12 per barrel. The S&P 500 fell 48% from January 1973 to October 1974.

Outcome

Short Term

The U.S. entered a severe recession with unemployment rising above 9%. Gas lines and rationing became symbols of the crisis.

Long Term

The shock ended the postwar economic boom, triggered a decade of stagflation, and permanently elevated energy security as a national priority. It took the S&P 500 until 1980 to sustainably recover.

Why It's Relevant Today

The International Energy Agency's characterization of the Hormuz closure as the largest oil supply disruption since the 1970s energy crisis draws a direct line to this precedent. The critical question is whether the disruption lasts months (1990 playbook, limited damage) or becomes prolonged (1973 playbook, structural damage).

Russia-Ukraine war and energy price shock (2022)

February – October 2022

What Happened

Russia's invasion of Ukraine in February 2022 sent Brent crude briefly above $130 per barrel and natural gas prices to record highs in Europe. The S&P 500 fell roughly 25% peak-to-trough during 2022, driven by both the energy shock and aggressive Federal Reserve rate hikes to combat inflation.

Outcome

Short Term

European nations scrambled to find alternative energy supplies. The Fed raised rates at the fastest pace in four decades.

Long Term

Europe largely weaned itself off Russian gas within 18 months. The S&P 500 recovered fully by early 2024, helped by the AI investment boom.

Why It's Relevant Today

The 2022 precedent shows how an energy shock can compound with Fed tightening to produce extended equity pain. UBS's bet that the Fed will eventually cut rates—rather than hike—is the key difference from 2022, but Wells Fargo's abandonment of rate cut expectations suggests this assumption is fragile.