Key Points
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If Nvidia finds ways to incorporate less expensive memory in future chips, Micron’s premium high-bandwidth memory (HBM) opportunity could shrink significantly.
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Samsung and SK Hynix are closing the gap in HBM, so Micron needs sustained demand and growing market share to justify its aggressive capacity expansion.
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Micron remains a viable long-term play, but investors should not assume $1,000 per share is a firm floor.
Micron Technology (NASDAQ: MU) has rallied more than 500% over the past year and trades at $975 at this writing. When a stock appreciates at that pace, the relevant question shifts from whether the business is sound to what would have to change for the narrative to unravel—and who holds the power to make that call.
That power largely rests with Nvidia (NASDAQ: NVDA). Much of the current discourse centers on a table in Nvidia’s second-quarter commentary, in which Chief Financial Officer Colette Kress revealed that supply commitments surged from $119 billion to $279 billion, driven by memory purchasing commitments. It is a staggering figure, and spending drops to near zero after fiscal 2029, according to The Wall Street Journal.
Fair enough. A purchase commitment is a plan, and plans are subject to revision. Nvidia is placing a substantial bet on future memory demand, but that spending is not guaranteed if its strategic priorities shift.
The Nvidia Signal That Matters More for Micron
What is harder to dismiss is what Nvidia is doing at the design level, because design decisions lock in consequences years before purchase orders materialize.
Consider the Rubin CPX, a chip designed for the initial phase of processing an AI prompt—when the system reads all the input data before generating a single word. Nvidia’s original plan called for GDDR7, the same memory category found in gaming graphics cards. It costs roughly one-fifth as much per gigabyte as the premium stacked memory that underpins Micron’s profitability, and it eliminates the costly packaging step entirely.
Analyst Ming-Chi Kuo reported in August that Nvidia revived the project with stacked memory, though at 168 gigabytes per chip rather than the 288 gigabytes per chip in the flagship part.
Image source: Getty Images.
Read that sequence as a company probing how little premium memory it can get away with in workload segments where it is not strictly necessary. Nvidia has every incentive to keep experimenting. The broader signal to watch is how Nvidia designs its chips, because those architectural choices can influence Micron’s trajectory for years—or potentially permanently.
Nvidia originally intended to use cheaper memory in the Rubin CPX. However, if Nvidia continues selecting more expensive stacked memory, that is a positive development for Micron, as it would confirm ongoing demand for the company’s high-end products.
Why Micron’s Own Expansion Intensifies the Risk
Here is where the situation becomes uncomfortable for Micron shareholders. The company plans to double its monthly stacked memory output to approximately 100,000 wafers by the end of this year. Yet its share of that market fell to 18% in the second quarter, while Samsung Electronics doubled its share to 33%, according to research firm Counterpoint Research. Samsung reached its first billion dollars in stacked memory revenue within four months of commencing shipments.
Micron is therefore adding considerable capacity to a market in which it may be ceding ground. Nvidia CEO Jensen Huang confirmed in June 2026 that the company had approved all three major memory manufacturers—Samsung Electronics, SK Hynix, and Micron Technology—to supply HBM4 memory for its next-generation Vera Rubin platform.
This development cuts both ways. It keeps Micron in the competition while handing Nvidia three suppliers who will vie for its business, creating competitive pressure on pricing and terms.
What Does All This Mean for Nvidia and Micron?
For Nvidia, the outlook is favorable. Three qualified suppliers competing for its patronage represents a cost advantage, and its memory expenditure is vast. Nvidia is in a position of strength: it can design its chips around whichever memory offers the best economics and leverage multiple qualified suppliers to manage costs and supply reliability.
For Micron, the near-term picture remains robust. Management has guided that tight supply conditions will persist beyond calendar 2027, and SK Hynix CEO Kwak Noh-jung has suggested the shortage could extend through 2030.
The risk emerges when Micron’s expanded capacity hits the market at the same time Nvidia’s designs require less premium memory per chip and its commitment schedule begins to thin. I would not short this stock, but I would stop treating $1,000 as an immovable floor.
If Micron has grown to an outsized portion of your portfolio, trimming back toward your target allocation is a reasonable step. Monitor two metrics closely: Micron’s share of stacked memory in each quarterly earnings update and whether Nvidia extends its supply commitments into fiscal 2030. That timeframe may seem distant, but the signals will emerge sooner than expected.
Micron Technology: What to Watch Going Forward
Before making any investment decision on Micron Technology, consider the broader context: Micron’s growth story is closely tied to Nvidia’s design and purchasing choices, which are themselves evolving. The company’s premium memory segment faces both genuine demand tailwinds and real competitive headwinds in the years ahead.
Micah Zimmerman has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Micron Technology and Nvidia. The Motley Fool has a disclosure policy.
