Micron Technology, Inc. (NASDAQ:MU)’s earnings multiple looks modest beside many AI suppliers, but memory-cycle profits can change rapidly. The company ranks third in our 10 Best AI Infrastructure Stocks to Buy for the Long Term, behind only two infrastructure companies with more hedge-fund holders. MU closed October 15 at $931.24, compared with $74.33 of fiscal 2026 GAAP earnings per share. That is 12.5 times earnings. The question is how much profitability an investor is assuming will persist.
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Start with the earnings that can disappear
Micron’s September 30 release showed fiscal-year revenue of $133.19 billion and net income of $84.97 billion. Its final quarter produced an 86.8% gross margin. Strong profitability extended beyond one AI category: the reported cloud-memory, core-data-center, mobile-client and automotive-embedded businesses all had exceptionally high margins.
AI memory and storage demand can support volume and richer product mix. Yet scarce supply and favorable pricing are cyclical advantages. New capacity, customer inventory adjustments or weaker pricing can reduce earnings even while long-term demand grows. Our Western Digital comparison asks which AI data supplier has more valuation room for profits to normalize.
Hold the share price constant and reduce annual earnings by 25%, 50% and 75%. The resulting multiples are 16.7, 25.1 and 50.1 times. This sensitivity is not a forecast of those declines or a price target. It shows why a low observed multiple can coexist with substantial earnings risk.
What must remain after the boom?
An investor requiring a hypothetical 5% earnings yield at this price would need $46.56 of sustainable annual earnings per share. That is 37.4% below fiscal 2026 EPS. A 4% requirement needs $37.25, allowing a 49.9% decline. Those yields are explicit investor hurdles, not estimates of fair value, and accounting earnings still have to fund investment before becoming distributable cash.
Micron’s year generated $89.68 billion of operating cash flow, while reported net capital investment reached $27.37 billion. Maintaining technological competitiveness requires continued spending. The company also has a stronger financial reserve. Liquidity can preserve operations while equity valuations still fall.
Institutional participation broadened: Insider Monkey’s holder count rose to 184 in Q2 2026 from 154 in Q1. Water Street Capital reduced shares 49%, illustrating that wider ownership and individual selling can occur together. September 30 short interest was 26.02 million shares, 2.31% of float. Neither snapshot resolves sustainable earnings.
Micron meets the illustrative earnings-yield test only if sustainable earnings clear the chosen threshold. That test does not establish a shareholder return or fair value. At a 5% illustrative earnings yield, the key number is $46.56 per share. Pricing, margins and capital commitments will determine whether that cushion survives; extrapolating the strongest quarter would miss the central risk.
