Nasdaq Rise July 9: AI Tech Lifts Markets Past Iran Risk

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Nasdaq Composite advanced from an early 0.2% gain to close up 1.22% at 26,188, led by semiconductor names AMD (+7.07%), Micron (+7.33%), and Marvell Technology (+6.53%).
Micron's fiscal Q3 beat — $41.5 billion in revenue and $25 EPS — catalyzed a sector-wide chip rally and reaffirmed demand for AI memory infrastructure.
Brent crude eased to $76.99/barrel after surging 5.2% the prior session as markets discounted near-term Strait of Hormuz disruption as a tail risk.

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Nasdaq closed July 9 up 1.22% as AI stock performance from AMD, Micron, and Marvell overcame Iran war jitters, while S&P 500 futures rise had already signaled tech sector recovery before the open.

Lead

New York — The Nasdaq Composite advanced 1.22% to close at 26,188 on July 9, 2026, climbing from a cautious early gain of just 0.2% as semiconductor and AI-linked stocks broadened through the afternoon to override investor anxiety over escalating U.S.–Iran military strikes. The S&P 500 added 0.73% to 7,537, the Dow Jones Industrial Average gained 0.13% to 52,416, and the Russell 2000 climbed 1.34%. The CBOE Volatility Index fell 5.5% to 15.97, signaling reduced near-term fear despite an active front in the Middle East.

What Happened

Markets opened with the Nasdaq holding a tentative 0.2% advance as overnight reports of U.S. strikes on approximately 90 Iranian military sites kept sentiment cautious. President Donald Trump publicly declared the ceasefire voided and warned of potential strikes on Iran's Kharg Island oil export terminal, triggering a brief oil surge and early risk-off positioning in equities.

The session turned when Micron Technology (MU) extended pre-market gains tied to fiscal Q3 results that significantly exceeded expectations. Revenue of $41.5 billion and earnings per share of $25 validated the case for AI memory infrastructure, pulling the broader semiconductor complex higher through midday and into the close.

AI Stock Performance

AI chip names drove the day's advance across multiple sub-sectors. Advanced Micro Devices (AMD) surged 7.07%, Micron Technology (MU) gained 7.33%, Marvell Technology (MRVL) added 6.53%, and SanDisk (SNDK) climbed 9.11%. Optical communications suppliers — Corning (GLW), Coherent (COHR), and Lumentum (LITE) — posted strong gains as demand for AI networking infrastructure extended beyond pure logic chip plays. The VanEck Semiconductor ETF (SMH) closed up 3%.

Not all AI-adjacent names participated. Nvidia (NVDA) slipped 0.23% to $203.65 despite the broader rally, reflecting continued valuation scrutiny following a period of elevated multiple expansion. Palantir Technologies (PLTR) dropped approximately 4%, extending its year-to-date decline to 29% as investors continued to discount a software valuation premium disconnected from near-term revenue visibility.

AMD's 130% year-to-date advance underscores a broader rotation dynamic: institutional buyers seeking exposure to the AI capital spending cycle have increasingly diversified away from Nvidia into alternative accelerator and memory suppliers.

S&P 500 Futures Rise and Pre-Market Signals

S&P 500 futures rise during overnight trading had already set a constructive tone, with Nasdaq 100 futures climbing approximately 1% on the strength of Micron's earnings and pre-market gains in SanDisk. That pre-bell signal was consistent with what followed in regular hours: semiconductor leadership broadening into the close and lifting the S&P 500 to finish near session highs. Gold rose 1.24% to $4,133 per ounce, a simultaneous safe-haven bid that indicated geopolitical risk remained priced but not dominant.

Geopolitical Dimension

The Middle East remained the session's principal overhang. U.S. forces struck roughly 90 Iranian military targets overnight, and Iran retaliated with strikes targeting Gulf regional allies. Trump's warnings about a new naval blockade and the potential targeting of Kharg Island — Iran's principal crude export terminal — introduced a distinct tail risk into energy markets.

Brent crude retreated to $76.99/barrel on July 9, down $1.03 after surging 5.2% the prior session. Vessel tracking data showed reduced transits through the Strait of Hormuz, through which approximately 20% of global oil supply and 20% of global LNG trade flow. Markets priced a partial risk premium rather than full closure, but the situation remains a live variable.

Sustained oil above $80/barrel would widen inflationary pressure and complicate Federal Reserve policy, creating an indirect ceiling on equity valuations — particularly for tech names whose multiples are sensitive to discount rate assumptions.

Strategic Context

Micron's Q3 results provided structural support for the session's AI narrative. The company generated approximately $28 billion in net profit during the quarter, citing long-term supply agreements with major cloud customers as evidence that data center capital expenditure programs remain fully intact despite macro uncertainty. Management elevated forward guidance, reinforcing a view that the AI infrastructure cycle has not reached peak absorption.

Tech sector breadth on July 9 was notably healthier than during the prior week's AI-linked selloff, which had briefly sent the Nasdaq down more than 290 points intraday. The recovery suggests buy-side conviction in AI capital spending has not materially eroded, even as individual high-multiple names like Palantir face ongoing multiple compression.

Outlook

The July 9 session illustrated the market's working hypothesis: that an entrenched AI infrastructure investment cycle can outperform geopolitical disruption so long as energy-market damage remains contained. Micron provided the earnings anchor that hypothesis required, while retreating oil prices offered temporary relief from the Iran conflict premium.

The durability of that dynamic depends on two variables. First, whether U.S.–Iran exchanges remain limited to military sites rather than escalating into an energy infrastructure campaign targeting Hormuz traffic or Kharg Island. Second, whether upcoming earnings from cloud hyperscalers and AI hardware customers confirm that data center spending commitments are holding firm. Federal Reserve minutes scheduled for release this week will also be scrutinized for any language suggesting persistent energy costs could delay an easing cycle. For now, markets have chosen to trust the AI cycle over the war calendar.

Mentioned tickers: COMP, SPX, INDU, RUT, MU, AMD, NVDA, MRVL, SNDK, PLTR, GLW, COHR, LITE, SMH