Micron Stock Plunges 7% as AI Spending Fears Clash with Record Earnings

Key points

• Micron stock fell 7% to $795.23, underperforming the S&P 500's 1.58% gain, amid a broader tech sector pullback.
• The company is projected to post fiscal Q4 earnings of $38.2 per share, representing a 699% year-over-year increase, with revenue expected at $62.04 billion.
• Micron trades at a forward P/E ratio of 4.81, significantly below the industry average of 15.33, suggesting potential undervaluation despite recent volatility.
• The firm has pre-sold its high-bandwidth memory (HBM) and DRAM capacity through 2029, with plans to open six new production facilities by 2028.
• Investors are concerned about the durability of AI capex, with some fearing a memory price peak in 2027 due to rising competition from Chinese suppliers and peers like Samsung and SK Hynix.

Background

Micron has fundamentally shifted its revenue model toward AI-driven data centers, which now account for 63% of its income. In October 2026, the company locked in over 75% of its 2027 production through long-term contracts. This pivot follows a broader trend in the semiconductor sector where AI infrastructure spending has driven massive capital expenditures, though concerns about debt financing have emerged recently.

How outlets are covering it

The Motley Fool argues that Micron is undervalued at 12 times trailing earnings, predicting the stock could triple if it returns to historical valuation levels, citing supply constraints that will persist through 2030. Conversely, Seeking Alpha highlights a 'reckoning' driven by tightening credit conditions and Japanese peer Kioxia's tepid outlook, suggesting potential moderation in memory pricing. Yahoo Finance notes that despite the recent 18% monthly decline, Micron holds a 'Strong Buy' rating due to massive earnings revisions, with consensus estimates showing revenue growth of over 100% for the full year. While all sources agree on the strength of current demand, they diverge on whether the current valuation reflects a temporary dip or a structural peak in the AI cycle.

Why it matters

Micron's performance serves as a bellwether for the broader AI infrastructure cycle. If memory chip demand softens or pricing peaks earlier than expected, it could signal a slowdown in the massive capital expenditure plans of hyperscalers like Microsoft and Amazon. Conversely, sustained supply constraints could validate the current high valuations of AI-related stocks, influencing investment strategies across the technology sector for 2027.

What to watch

Investors will closely monitor Micron's upcoming earnings disclosure to assess the durability of its pricing power and the impact of its new production facilities. The market will also watch for signs of moderation in memory demand from competitors like Kioxia and SK Hynix, as well as any shifts in AI capex spending by major cloud providers. The resolution of the debate between supply constraints and potential overspending will likely determine the stock's trajectory in the coming quarters.