Tech Surges as Micron Joins the Trillion-Dollar Club, Oil Slides Nearly 3%
Technology stocks dominated the stock market today, with the sector climbing +2.66% and dragging the Nasdaq Composite up +1.19% to close at 26,656.18. The session's star was Micron Technology, which surged 18% to cross a $1 trillion market cap for the first time. UBS tripled its price target on the stock to $1,625, citing structural changes AI has driven across the memory chip complex. The move lifted the broader semiconductor space, with the VanEck Semiconductor ETF (SMH) touching a new 52-week high.
But this wasn't a uniform rally. The Dow Jones slipped -0.23%, weighed down by weakness in defensive sectors. Energy stocks cratered -2.72% as WTI crude oil fell nearly 3% to $93.71, with traders pricing in renewed hopes for an Iran peace deal after President Trump declared a deal "largely negotiated" over the weekend.
The split between growth and value was as clean as it gets: tech led, energy lagged, and the spread between them topped five percentage points.
How Did the Major Indexes Close Today?
Bottom Line: Today's session was a study in sector divergence: AI momentum is no longer a Nvidia story, and Micron's trillion-dollar milestone signals the memory chip complex is now a core part of that trade. The bigger risk to watch is crude oil. An Iran deal breakdown could reverse the energy selloff quickly and push volatility higher, making geopolitical headlines the swing factor for near-term sector rotation.
The S&P 500 added +0.61% to close at 7,519.34, while the Russell 2000 outperformed everything with a +1.76% gain. Treasury yields fell across the curve, with the 10-Year dropping 6.5 basis points to 4.493% on Iran peace deal optimism.
The VIX ticked up slightly to 16.94, a minor uptick that didn't match the risk-on tone in equities.
Sector Performance
Today's sector rotation told a clear story: money flowed out of oil-sensitive names and into AI-driven growth. Technology (XLK) gained +2.66%, powered by Micron's breakout and broad semiconductor strength. On Semiconductor and Western Digital each added nearly 9%, while AMD climbed 6%.
Industrials and Materials followed tech higher, both up more than 1.4%.
At the bottom, Energy (XLE) dropped -2.72% as crude oil's nearly 3% decline dragged the entire sector lower. Consumer Staples fell -1.38%, and Health Care shed -0.91%, continuing the pattern of defensive sectors underperforming on risk-on days.
JPMorgan flagged these "low vol" sectors as potential buying opportunities, noting they've fallen 6% since the start of the Middle East conflict while bond yields have risen 55 basis points.
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Join Traders AgencyWhat Is Happening in the Stock Market Today?
The stock market today was defined by two competing forces: AI optimism and Iran peace deal hopes.
On the AI front, Micron (MU) stole the show. Shares jumped 18%, pushing the company past a $1 trillion market cap for the first time. UBS tripled its price target to $1,625 from $535, pointing to long-term agreement opportunities with partially fixed pricing.
The global memory shortage driven by AI demand has allowed Micron and its peers to hike prices, and the stock has more than tripled year to date.
The Iran story hit energy hard. President Trump declared a deal "largely negotiated" over the weekend and said an announcement to reopen the Strait of Hormuz would come shortly. Crude oil plummeted on that news.
But Monday night brought fresh U.S. strikes on Iranian vessels in the strait, a reminder that the market keeps trying to price in peace only to get pulled back by re-escalation. The correlation between crude oil prices and the VIX during this conflict has been unmistakable, though the VIX is now making new lows below its April levels even as oil remains elevated.
Elsewhere in the stock market today, AutoZone (AZO) dropped more than 10%, its worst day since March 2020. The company actually beat earnings estimates at $38.07 per share versus the expected $36.28, but analysts zeroed in on lackluster international growth, margin compression, and slowing sales that management blamed on unseasonably cool weather.
Wall Street also pressed executives about potential lubricant supply disruptions tied to the Iran war.
Space stocks continued their post-Memorial Day surge following SpaceX's official IPO filing last week. The VanEck Space ETF (WARP) climbed 24% in just five days. The Procure Space ETF (UFO) is up about 65% year to date. Retail traders are piling in, looking for proxy trades ahead of what could be the largest IPO ever.
Modine Manufacturing jumped 16% after announcing a $4 billion data center cooling agreement through 2029. Oklo rose 6% on news that the Department of Energy selected it for advanced discussions on using Cold War-era plutonium as nuclear reactor fuel. Qualcomm gained 3% on reports of a chip supply deal with ByteDance for AI data centers.
What Should Traders Watch in the Next Session?
The tug-of-war between Iran headlines and AI momentum will likely continue to drive sector rotation in coming sessions. Traders should watch crude oil closely, as any breakdown in deal talks could quickly reverse today's energy selloff and send the VIX higher.
The 30-Year Treasury yield sitting just above 5% remains a key level. Further declines could provide a tailwind for the rate-sensitive sectors that have lagged.
With the Fear & Greed Index at 68, sentiment leans greedy but isn't stretched. The AI trade keeps broadening beyond Nvidia into memory, CPUs, and infrastructure plays. If that rotation holds, the stock market today may be signaling the next leg of the rally has a wider base than the last one.
Key Takeaways
- Micron Technology surged 18% to cross a $1 trillion market cap for the first time, after UBS tripled its price target to $1,625 citing AI-driven structural changes in the memory chip market.
- The tech-energy spread topped five percentage points on the session: tech gained +2.66% while energy cratered -2.72%, one of the cleanest growth-vs-value splits in recent memory.
- WTI crude fell nearly 3% to $93.71 as traders priced in an Iran peace deal that President Trump called 'largely negotiated,' a headline risk that could reverse fast if talks collapse.
- The 30-Year Treasury yield is sitting just above 5%, a level traders should watch closely. Further declines could unlock a tailwind for rate-sensitive sectors that have underperformed.
- The Fear and Greed Index at 68 signals greedy sentiment without being stretched, and the AI trade is broadening into memory, CPUs, and infrastructure beyond Nvidia, suggesting the rally may have a wider base than before.
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