Micron's AI-Fueled Rally Gets an Unexpected Boost from Samsung's Looming Strike

Micron hits record $803.63 as Samsung labor dispute threatens DRAM supply; Bank of America doubles price target to $950 on AI-driven structural demand shift.

The memory-chip giant is riding a double wave that investors rarely see in the sector: a direct production threat from its largest rival and a structural demand shift from artificial intelligence. Micron's stock closed above $800 for the first time on Wednesday, settling at $803.63 — a 4.83% gain that pushed its market capitalisation beyond $906 billion. In Frankfurt on Thursday, the shares traded at €682.50, just a hair below the recent high.

The immediate catalyst is a labour dispute at Samsung. The South Korean chipmaker began a so-called warm-down of its semiconductor fabrication on May 14, a precautionary production dial-back ahead of an 18-day general strike scheduled to start on May 21. Samsung has already removed roughly 15,000 FOUPs — containing about 360,000 wafers — from DRAM lines at its Pyeongtaek facility. With a 36% grip on the global DRAM market, even a short disruption can move prices. A full walkout involving more than 40,000 workers could cost $1.7 billion in daily production losses, analysts estimate.

Against that supply-side tension, Bank of America doubled its price target on Micron to $950 from $500, maintaining a Buy rating. The bank's analysts now value the stock in two distinct buckets: the AI and HBM franchise at roughly $240 per share, and the legacy DRAM and NAND business at about $710. The arithmetic signals a decisive break from the old cyclical script. Bank of America expects the industry's supply-demand ratio to stay below 110% through 2028, a backdrop that would support pricing power well beyond the current cycle.

Micron is feeding that narrative with its own product pipeline. On May 12, the company began sampling new 256-GB DDR5 RDIMM server modules that hit 9,200 MT/s. The modules deliver over 40% more bandwidth and consume over 40% less power compared with standard configurations — precisely the combination that hyperscale data centres need as energy becomes a bottleneck. At the same time, Micron is ramping production of HBM4 modules with 36 GB and a 12-high design, destined for Nvidia's Vera Rubin architecture.

The numbers underscore the momentum. Micron's gross margin in the second fiscal quarter stood at 74.4%, and the company guided third-quarter revenue to $33.5 billion. The cloud giants are spending accordingly: Amazon and Microsoft each plan budgets near $200 billion for AI infrastructure, with Alphabet not far behind. Meta recently raised its capital expenditure forecast, explicitly citing higher memory prices as a driver. That wave of hyperscaler investment could push total AI-related spending past $1 trillion by 2027, according to Bank of America.

Yet the valuation debate is intensifying. At a trailing price-to-earnings ratio of 37.94, Micron trades well above its five-year median of 20.72. GuruFocus data pegs the stock roughly 138% above a calculated fair value of $336.93. Insider sales have added to the caution: the company's director Steven J. Gomo and CEO Sanjay Mehrotra both unloaded significant share positions in May, and total insider disposals over the past three months amounted to $52.4 million. Institutional investors are split — Central Asset Investments & Management Holdings HK increased its stake while Berkeley Capital Partners trimmed its position.

For now, the analyst consensus remains heavily bullish, with 27 buy ratings and three neutral. The forward argument hinges on the idea that Micron's fiscal 2027 price-to-earnings multiple of roughly 7.3 leaves plenty of room for earnings to catch up, especially when stacked against a sector median of about 30. But the next real test comes on May 21. If Samsung's strike goes ahead and production stays throttled, DRAM prices will almost certainly tighten further, adding another leg to Micron's rally. A quick settlement in South Korea, by contrast, would strip away some of that supply premium — and leave the stock's lofty valuation exposed to the whims of the AI demand cycle.