Micron reported second-quarter revenue of $23.86 billion, nearly doubling year-over-year. Earnings per share came in at $12.20, far exceeding market expectations of $9.31. Its third-quarter revenue guidance reached as high as $33.5 billion, implying growth of over 200% year-over-year. Revenue surged, margins expanded, and AI-driven demand remained strong — yet the stock declined. This divergence is not due to flaws in the earnings themselves, but rather three heavier variables: elevated expectations, the cost of capital, and the approaching end of the cycle.

“Meeting Expectations” Is Not Enough

Stock pricing is never about absolute numbers, but about changes in expectations. Prior to the earnings release, Micron’s stock had already risen more than 62% year-to-date and over 350% in the past year. This indicates that the “AI memory supercycle” narrative had already been largely priced in. When beating expectations becomes the market’s baseline requirement, anything merely “in line” can be perceived as a disappointment.

Capital Spending Plans Fail to Impress

The primary driver behind the stock decline was the company’s higher-than-expected capital expenditure plans. Micron projected capital spending exceeding $25 billion for the current fiscal year, significantly above market expectations of $22.4 billion. More importantly, management indicated that fiscal 2027 spending would increase by more than an additional $10 billion, mainly for new fabrication plants in Idaho and New York.

While capacity expansion is necessary to meet long-term AI-driven structural demand, in the short term it implies pressure on free cash flow, higher depreciation expenses, and potential margin dilution. This reflects a classic conflict between a “good business” and a “good stock.”

From Shortage to Oversupply May Come Quickly

A third concern stems from the natural cyclical nature of supply and demand. Following the earnings release, Summit Insights downgraded Micron from “Buy” to “Hold,” expecting favorable supply-demand dynamics in the first half of 2026, but a significant slowdown in pricing momentum in the second half. Former JPMorgan strategist Marko Kolanovic offered an even sharper warning: once supply shortages ease and oversupply emerges, Micron and other semiconductor stocks could drop as much as 75%.

This concern is not unfounded. The memory chip industry has historically been highly cyclical — prices may triple during booms but can fall by as much as 70% during downturns. Micron highlighted that HBM4 has entered mass production and emphasized deep partnerships with customers such as Nvidia, which does provide demand visibility for the coming years. However, when all memory manufacturers are aggressively expanding capacity, the inflection point in supply-demand balance may arrive sooner than expected.

For investors, Micron offers three key lessons:

First, the “best” moment is often the “most expensive” — when a stock has already priced in a year’s worth of gains ahead of earnings, the earnings release itself becomes a profit-taking event.

Second, capital expenditure is a double-edged sword — announcing expansion plans at the peak of a cycle is often interpreted as a signal that the cycle is nearing its top.

Third, the AI narrative is being broken down into concrete technical and financial metrics — the market is no longer blindly buying into the story.