Is Iran Dragging Stocks Toward Their First Losing Session in 10 Days?

NEW YORK — Nine days of gains may be over: at 1:30 PM ET, the S&P 500 trades at 7,566.40, down 0.57% from Tuesday’s close, as Iranian missile strikes on U.S. Gulf allies Kuwait and Bahrain send oil prices to $96.05 and investors scrambling for cover across technology, financials, and small-caps.

What Is Driving the Tape

The dominant force Wednesday is crude oil, and the events behind the move are serious. Iran launched ballistic missiles at Kuwait and Bahrain overnight, killing at least one person in Kuwait according to the country’s foreign ministry. The U.S. military responded with fresh strikes on Qeshm Island and struck an oil tanker bound for an Iranian port — a move that directly threatens the flow of Gulf crude. WTI surged 2.5% to $96.05 by midday, pushing the commodity toward the $100 threshold it has not tested in over a year. As our earlier analysis asked, is $95 oil the ceiling — or the floor? Today’s price action is starting to answer that question.

Layered on top of the energy shock is a second macro blow: the Trump administration formally proposed double-digit tariffs on imports from more than a dozen major trading partners following a forced-labor investigation. Sixteen economies — including Canada, Mexico, the European Union, Taiwan, and the United Kingdom — face 10% duties. China, Japan, India, South Korea, and Switzerland face 12.5% levies. The combination of an energy price spike and a renewed tariff broadside arriving in the same session is the kind of compound macro event that market bulls have been discounting all spring. CNBC reported the full scope of the tariff proposal this morning, and the reaction in technology and cyclicals has been immediate.

One piece of data pushed the other way. The ADP National Employment Report showed private payrolls rose 122,000 in May, beating the Reuters consensus estimate of 117,000 and building on a downwardly revised 105,000 in April. A labor market that continues to add jobs above forecast should, in theory, support risk sentiment — and yet equities are still down sharply. That tells you something. When a beat on payrolls cannot lift stocks, the sellers are in control of the narrative.

Data Visual

Major Index Performance at Midday vs. Previous Close (June 3, 2026)

Shows how far each major U.S. equity index has moved from Tuesday’s close by 1:30 PM ET, illustrating the breadth of today’s selling pressure.

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Standout Movers — The Winners Who Don’t Fit the Story

Not everything is red. The day’s market internals tell a tale of defensive rotation rather than broad capitulation. Walmart rose 2.85%, leading the Dow on the upside as traders moved into large-cap retail defensives. Caterpillar gained 2.62% — counterintuitive at first glance, but infrastructure names with pricing power tend to catch a bid when energy inflation looks sticky. Navitas Semiconductor surged more than 20% after further news on its chip collaboration with Nvidia, and GameStop added 9.4% in what appears to be a momentum-driven squeeze rather than fundamental catalyst.

Marvell Technology extended its extraordinary run with a 7% gain, a remarkable show of resilience given the broader tech selloff. Yesterday’s 25% surge, fueled by Nvidia CEO Jensen Huang’s public endorsement — and his suggestion Marvell could become the next trillion-dollar company — is proving more durable than skeptics expected. NextNav also added 10.8%.

On the losing side, the damage is concentrated where you’d expect. Microsoft fell 3.08% and Goldman Sachs dropped 2.56% in what amounts to a dual warning sign: when the market’s biggest technology bellwether and one of its premier financial institutions sell off together, the damage is systemic rather than sector-specific. Datadog retreated 7.1%, StepStone Group lost 9.1%, and Mineralys Therapeutics shed 11.2%. The Russell 2000’s 1.34% decline is the most telling data point of the session — small-caps are the most rate-sensitive, most tariff-exposed, and most vulnerable to a growth scare. Their underperformance confirms this is not simply a technology story.

The Semiconductor Divide

The chip sector is refusing to follow the broader tape lower, but the internal picture is fractured. Semiconductors as a group added 1.42% on the session, Semiconductor Equipment and Materials jumped 4.95%, and Electronic Components surged 5.85%. That strength is almost entirely explained by the Marvell/Nvidia halo effect radiating through AI-adjacent names. Whether that single-day surge in chip names is built to last remains the central question for tech bulls.

But Nvidia itself slipped Wednesday alongside Micron Technology, suggesting the market is separating the beneficiaries of Jensen Huang’s commentary from the broader AI hardware complex. That selective behavior matters. When Nvidia can’t hold gains on a day its ecosystem partner is surging 7%, either the stock is digesting a significant run-up or traders see the Marvell endorsement as incrementally diluting Nvidia’s own dominance. Neither interpretation is obviously bullish. MarketWatch covered the competitive dynamics between the two firms earlier this week.

Data Visual

WTI Crude Oil Price — Recent Sessions Leading Into June 3

Tracks the recent trajectory of WTI crude to show traders how quickly oil has climbed toward the psychologically significant $100 level.

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Yesterday’s trio of blowout earnings — Marvell, Hewlett Packard Enterprise surging 25%, and Microchip Technology up 12% on data center revenue growing 65% for the full calendar year — provided the AI narrative with fresh ammunition. Whether three earnings blowouts can drag a cautious market higher is a question today’s session is answering: not when geopolitics intervene.

What to Watch Into the Close

The afternoon session sets up around three distinct pressure points. First, oil. Any headline suggesting ceasefire progress — or, conversely, further escalation — will move equities by 0.5% or more in either direction within minutes. Traders should keep a Bloomberg terminal alert on any State Department or Pentagon communication from the Gulf region. Second, the S&P 500’s ability to reclaim the 7,582 level. That was the intraday low early in the session; a close below it signals that Monday’s record close at 7,620.90 may not be retested quickly. A hold above it, particularly on improving breadth, keeps the nine-week winning streak thesis alive heading into Friday’s nonfarm payrolls report.

Third, and most underappreciated: the tariff announcement’s secondary effects on multinational earnings estimates. The 12.5% duties on China, Japan, and India are not priced into forward estimates for most S&P 500 companies with significant Asian revenue exposure. Analysts will begin revising those estimates tonight and tomorrow morning. The Financial Times reported that several major multinationals are already preparing public responses. That revision cycle — not today’s selloff — may be the more durable headwind. The VIX at 16 still suggests the options market is not panicking, but that number could move quickly if the afternoon tape deteriorates further. New Fed Chairman Kevin Warsh’s early signaling of both continuity and potential structural review adds a quiet variable to the policy backdrop that rates traders are still digesting. Friday’s nonfarm payrolls will sharpen that Fed calculus considerably.

The afternoon setup is defensive but not broken. The S&P 500 is down less than 0.6% on a session where oil jumped 2.5%, a fresh tariff round dropped, and a military engagement in the Gulf dominated headlines. That relative resilience — if it holds — is either a sign of a market with genuine structural support, or a warning that traders have not yet fully priced the compound shock. Neither interpretation is comfortable. The close, not the midday level, will tell traders what this session actually means. Whether the AI boom is broad enough to carry a tenth straight winning week is suddenly a live question again.