Amid a volatile start to the year for U.S. stocks, one trading theme has remained resilient: long positions in memory chips and data storage companies. Despite recent pullbacks, firms such as SanDisk (SNDK.US), Western Digital (WDC.US), and Seagate Technology (STX.US) are among the top performers in the S&P 500 for 2026, continuing their strong showing from 2025. Massive investments in artificial intelligence (AI) have fueled surging demand for memory chips and components used in data centers, creating supply shortages. Rob Thummel, Senior Portfolio Manager at Tortoise Capital, noted, "Infrastructure is now the core focus." The firm's AI infrastructure ETF holds shares in Western Digital, Seagate, SanDisk, and Micron Technology (MU.US).
The strength of this sector contrasts sharply with the so-called "Magnificent Seven" U.S. tech giants, which have seen declines this year, with their related index dropping by 10%. As major AI cloud providers ramp up demand for storage products, companies in this space wield significant pricing power, suggesting that traditional cyclical investment logic may need reevaluation. Thummel pointed out that these stocks align with Wall Street's current preference for "Heavy Asset, Low Obsolescence" (HALO) investments. "Large tech giants are being sold off due to underperformance, while capital is flowing into infrastructure, memory chips, and data storage," he added.
Last week, memory chip leader Micron Technology issued a far stronger-than-expected earnings outlook, reinforcing this investment thesis—sustained AI spending is driving a larger and potentially longer industry upcycle than in the past. Even as markets express caution about companies making aggressive AI investments, potential technological disruptions, or long-time leaders like NVIDIA (NVDA.US), the storage sector continues to attract investor interest. Jamie Zakalik, Senior Semiconductors Analyst at Neuberger Berman, observed, "The storage sector is showing unprecedented growth potential alongside substantial pricing power. While 'safe' may not be the right word, these companies offer clearer investment certainty compared to other parts of the AI supply chain."
SanDisk has been the S&P 500's top performer over the past two years, surging more than 1850% since its February 2025 listing. Western Digital and Seagate also rank among the index's top twenty gainers. Although Micron's stock fell 12% last week due to concerns over its aggressive capacity expansion plans, it remains up 42% for 2026, placing it among the top twenty-five performers. By comparison, the S&P 500 is down 3.9% year-to-date, the tech-heavy Nasdaq 100 has declined 4.2%, and the Philadelphia Semiconductor Index has risen only 9.7%.
The current price surge in memory chips is primarily driven by supply constraints. The industry has historically been prone to imbalances: rising prices lead to capacity expansion, which eventually triggers price collapses when demand weakens. Ann Miletti, Head of Equity Investments at Allspring Global Investments, commented, "Supply is still catching up with demand. This imbalance will eventually resolve—it's just a matter of time." However, with hyperscale companies continuing to invest heavily in new data centers, many investors believe the sector has further room to grow. Zakalik added, "The bullish case for memory chips is strong. AI-driven storage demand is structurally different from traditional hardware needs—this cycle may indeed be different."
NVIDIA CEO Jensen Huang's recent remarks have further boosted confidence. He stated last week that the company's AI chip sales could exceed $1 trillion in the coming years, signaling that continued AI investment will sustain high demand—a positive outlook for storage sector investors. Thummel concluded, "As long as cloud providers maintain capital expenditure and new AI applications keep emerging, the storage sector has room to rise. Huang highlighted the core needs of the AI industry, and storage is a critical part of that."
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