Among S&P 500 Stocks, Tech Companies Led the List of Double Digit Gains in June

The S&P 500 had advanced roughly 1.5 percent from the final trading day of May to the opening bell on Saturday.

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Yet that modest benchmark move masked far stronger gains among semiconductor makers and companies that supply related hardware, many of which had already notched double-digit increases.
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According to a recent client memo from Mizuho Securities desk analyst Jordan Klein, buy-side investors are “super bullish” on memory-chip and hard-disk-drive names such as Micron Technology.
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Micron, a dominant producer of dynamic random-access memory, is benefiting from industry price updates that Klein says sound “super positive” across the board.
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At the same time, Nvidia’s newly introduced Blackwell graphics processors are triggering a wave of interest in high-bandwidth memory, a specialized form of DRAM tuned for data-intensive artificial-intelligence workloads.
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Nvidia’s higher-end Blackwell Ultra chips, scheduled for release later this year or in early 2026, are expected to raise HBM density substantially, a development that should support Micron, Samsung Electronics, and other suppliers in that niche. Klein adds that portfolio managers are buying Micron shares ahead of the company’s late-June earnings report because they fear missing a breakout to previous highs as

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DRAM pricing improves and HBM demand accelerates.
Enthusiasm for advanced AI hardware was further buoyed last week when Advanced Micro Devices unveiled its next generation of accelerators.
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During its annual Advancing AI showcase, AMD introduced the Instinct MI350 series and a Helios rack-scale architecture that will integrate forthcoming GPUs, a strategic move that industry analyst Dave Altavilla says is “vital to compete with Nvidia.”
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Altavilla, principal at HotTech Vision and Analysis, told MarketWatch that whispers of significant design wins at major hyperscale cloud providers suggest AMD’s momentum is growing beyond the company’s role as a mere substitute for a supply-constrained rival.
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The excitement pushed AMD shares more than nine percent higher in a day, underscoring the market’s appetite for credible alternatives in AI hardware.
Sector performance data also show how strongly technology has led the broader market.
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From May 30 through early Friday morning, energy topped the leaderboard with an 8.7 percent jump, reflecting heightened geopolitical risk in the Middle East.
Information technology placed second with a 4.5 percent gain, while communication services rose 2.8 percent.
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Materials and real estate each edged up less than one percent, and industrials were flat. Healthcare slipped 0.1 percent, consumer discretionary fell 0.7 percent, financials dropped one percent, utilities lost 1.4 percent, and consumer staples trailed with a 3.1 percent slide.
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Brent and West Texas Intermediate crude futures illustrate why energy stocks topped the chart.
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Front-month WTI contracts climbed twenty-three percent from end-May to trade around seventy-four dollars and sixty-one cents per barrel early Friday, driven by fears that Iran could threaten traffic through the Strait of Hormuz, though prices eased slightly later in the session.
Technology’s strong showing is also visible in the roster of June’s star performers.
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Nine of the top twenty movers within the S&P 500 came from the tech sector, while four hailed from energy.
Coinbase Global, newly added to the index in May, leapt twenty-two percent in June after launching a stablecoin-based payments service.
Micron led all constituents with a thirty percent surge for the month and now stands forty-six percent higher for 2025, despite still being down one percent for calendar 2024.
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Oracle followed with a twenty-eight percent June rally, bringing its 2025 advance to twenty-seven percent and its trailing-twelve-month gain to fifty-eight percent.
ON Semiconductor rebounded twenty-seven percent this month, trimming its 2025 decline to fifteen percent and its 2024 drop to twenty-five percent.
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Contract manufacturer Jabil rose more than twenty-three percent and is now up forty-four percent year-to-date.
Coinbase’s twenty-two percent jump added to its forty-three percent climb over the past year.
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Oil explorer APA gained twenty percent in June even though it remains down twelve percent for 2025 and thirty-six percent for 2024.
Microchip Technology popped nineteen percent, while Dollar General advanced fifteen and a half percent as the retailer’s turnaround gained traction.
Steelmaker Nucor tacked on sixteen percent.
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Chip-equipment specialist KLA added nearly fifteen percent, and Western Digital gained a similar amount amid optimism that its flash-memory unit will benefit from renewed pricing discipline.
Advanced Micro Devices scored an eighteen-plus-percent rise for the month, giving the stock a nine percent gain for 2025 despite still being off eighteen percent for 2024.
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Lam Research, a vital supplier to the semiconductor industry, climbed fourteen and a half percent.
EOG Resources rose more than fifteen percent as crude prices rallied, while Halliburton advanced fourteen percent despite weakness earlier in the year.
Utility-to-energy transition play Vistra jumped nearly thirteen percent and is up an eye-popping two-hundred-fifty-eight percent since January 2024.
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Devon Energy added thirteen percent.
Agricultural giant Archer Daniels Midland, cosmetics group Estée Lauder, and combat-sports parent TKO Group rounded out the standouts with double-digit monthly gains.
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Taken together, the data confirm that investors are rewarding clear exposure to secular growth drivers such as artificial intelligence, high-bandwidth memory, and cloud infrastructure, while also bidding up companies poised to benefit from geopolitical tensions and commodity shocks.

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Within semiconductors, accelerating demand for specialized memory and diversified supply chains is fostering a bullish narrative that extends beyond the headline index.
AMD and Micron exemplify how strategic product roadmaps and strengthening order books can translate into rapid share-price appreciation even amid a volatile macro backdrop.
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Energy’s leadership highlights the market’s sensitivity to geopolitical flashpoints, with crude oil pricing acting as the principal lever for the sector.
Meanwhile, pockets of strength in consumer staples, utilities, and select industrial names reveal that investors are also looking for defensive or transition-related stories, not just high-octane growth.
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Overall, while the S&P 500’s headline advance may appear modest, the dispersion beneath the surface shows capital rotating aggressively toward firms positioned for structural tailwinds, whether in advanced compute, energy security, or specialized retail niches.
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For market participants, monitoring these thematic undercurrents can yield insight into where incremental performance may emerge during the rest of 2025, especially if macro and geopolitical risks continue to drive sharp swings in sentiment.

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