NextFin News - Shares of memory chip giants Micron Technology and SanDisk surged on Monday, extending a historic rally as analysts projected that the artificial intelligence-driven hunger for data storage will remain insatiable through the end of the decade. Micron shares climbed 5.6% to reach a record market capitalization approaching $600 billion, while SanDisk jumped 8.1%, pushing its valuation past $157 billion. The move follows a bullish upgrade from Melius Research, which argued that the industry is entering a period of "unusual durability" in profit margins that the market has yet to fully price in.
Ben Reitzes, an analyst at Melius Research, upgraded Micron to a buy rating on Monday, suggesting the stock could gain another 41% over the next 12 months. Reitzes, who has maintained a consistently optimistic outlook on the semiconductor sector's structural shift toward AI, noted that the current cycle is only in its "early innings." He specifically pointed to the critical role of High Bandwidth Memory (HBM), which is physically bonded to the advanced graphics processors produced by Nvidia and AMD. According to Reitzes, the necessity for memory has never been stronger, and he expects major chip designers to increase their direct investments in memory capacity to secure future supply.
The scale of the current rally is staggering by historical standards. Over the past year, Micron has gained roughly 550%, while SanDisk has seen an astronomical rise of more than 3,000%. This divergence in performance reflects SanDisk’s position as a pure-play beneficiary of the NAND flash memory shortage, which has seen prices for solid-state drives (SSDs) double or triple since late 2025. Mark Newman, an analyst at Bernstein who also holds a buy recommendation on SanDisk, attributed the momentum to significant upward revisions in earnings forecasts, powered by "very, very strong memory prices" that show little sign of cooling.
However, the current euphoria is not without its critics or risks. While the Melius report frames the demand as a long-term structural shift, some industry observers caution that the memory market remains notoriously cyclical. The current shortage is largely a result of manufacturers like Micron, Samsung, and SK Hynix diverting their general-purpose DRAM production lines to HBM. This pivot has created a supply vacuum in the consumer electronics market, leading Gartner to predict that PC prices will rise by 17% this year. If consumer demand for hardware softens under the weight of these price hikes, the "durable" margins predicted by Reitzes could face a sharp correction.
The concentration of demand within a few hyperscale data center operators also introduces a "single-point-of-failure" risk for the rally. While the memory complex is currently in a structural upcycle, any slowdown in AI infrastructure spending by major cloud providers would leave memory makers with expensive, specialized inventory. For now, the market is looking toward SanDisk’s Q1 2026 earnings report, scheduled for Thursday, as the next major test of whether these record valuations can be sustained by actual cash flow rather than just long-term projections.
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