Nasdaq Slips 0.57% as Iran War Grinds On, Earnings Steal the Spotlight

The Nasdaq Composite closed down 0.57% at 25,690.90 on Wednesday, as the U.S.-Iran conflict entered its 11th straight night of strikes and oil prices jumped again — but for the first time in weeks, Wall Street's reaction to the war looked more like a shrug than a selloff.

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What happened

The S&P 500 slipped 0.14% to 7,498.96 and the Dow Jones Industrial Average barely moved, down just 6.06 points (0.01%) to 52,218.58. The modest declines came even as Brent crude futures jumped about 3.4% to settle at $94.07 a barrel and West Texas Intermediate rose roughly 3% to $86.83, following the latest round of U.S. strikes on Iranian military targets. Secretary of State Marco Rubio added to the tension, saying Iran does not appear "serious" about reaching a deal to end the fighting, while President Trump warned that any Iranian strike on shipping in the Strait of Hormuz — a chokepoint that handles roughly 20% of global oil traffic — would draw a direct U.S. response against infrastructure inside Iran itself.

Why it matters — the market is trading through the war, not around it

A month ago, headlines like this routinely knocked a full percentage point or more off the Nasdaq in a single session. As I covered in Oil Jumps 2% as Houthis Blockade Saudi Arabia, Trump Rebuffs Iran Talks, oil-driven shocks had been hitting equities hard through most of July. Wednesday's price action was notably smaller relative to the size of the oil move — a 3%+ jump in crude barely dented the S&P. That's a sign investors are starting to price in a grinding, prolonged conflict rather than reacting to every escalation as a fresh shock. The bigger story for traders this week is earnings: ServiceNow, IBM, Tesla, Texas Instruments, Alphabet, and AT&T were all due to report, and positioning ahead of that slate looks like it did more to move individual stocks than the war did to move the index.

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Who's affected

Energy and oil-services names are the direct beneficiaries of the Hormuz risk premium, with crude sitting near two-year highs. On the equity side, the semiconductor and AI complex — which had been whipsawed hardest by war headlines — showed some of the steadiest footing of the session, a continuation of the rotation I flagged in Morgan Stanley's 2-Week Chip U-Turn: Sell Call to Buy Call. Airlines and other oil-sensitive consumer names remain the most exposed if crude keeps grinding toward $100, since jet fuel and input costs eat directly into margins. Big Tech, meanwhile, is now under its own microscope: Alphabet's report lands with investors watching cloud and AI capex commentary, while Tesla and IBM face separate scrutiny on delivery numbers and enterprise software demand, respectively.

What to watch next

• Oil above $90 sustained. Brent near $94-95 and WTI near $87-88 are levels that start to matter for inflation expectations if they hold rather than spike-and-fade.
• Strait of Hormuz activity. Any actual disruption to tanker traffic — not just rhetoric — would be a much bigger catalyst than the strikes themselves have been so far.
• The earnings run. Alphabet, Tesla, IBM, Texas Instruments, ServiceNow, and AT&T reporting in the same stretch means single-stock earnings reactions, not war headlines, may dominate index moves in the days ahead.
• Diplomatic signals. Rubio's comment that Iran isn't "serious" about a deal suggests no near-term de-escalation catalyst is on the table.

This is not financial advice — always do your own research before making investment decisions.

The takeaway from Wednesday's session isn't that the Iran conflict stopped mattering — oil at $94 says otherwise — but that markets appear to be adjusting to it as a persistent background risk rather than a fresh emergency each night. That leaves earnings, not geopolitics, as the more likely swing factor for stocks over the next week, even as energy markets stay on edge.