NEW YORK, July 19, 2026 – Shares of Micron Technology (NASDAQ:MU) tumbled 13% on Friday, as market participants continued to assess the company's performance against a backdrop of uncertainty surrounding the pace of artificial intelligence capital expenditure. The stock closed at $848.95, reflecting a 13.3% decline since July 10.
The sell-off comes even as Micron secured new long-term supply deals with automotive manufacturers, a move aimed at improving planning visibility. However, these agreements have yet to materially alter the company's revenue mix, which remains heavily weighted toward data-center operations.
Revenue Breakdown Highlights AI Exposure
In the fiscal third quarter, Micron's cloud memory and core data-center segments generated $25.29 billion in revenue, accounting for 61% of total sales. In contrast, automotive and embedded units contributed $4.63 billion, or 11.2%. The data-center-to-auto revenue ratio now stands at 5.5 to one, underscoring the critical role of hyperscaler budgets in driving future stock performance.
Trading volume on Friday reached 63.35 million shares, exceeding the 65-day average by 24%. Despite the weekly decline, the broader Philadelphia Semiconductor Index (SOX) fell 20.2% below its all-time high set on June 22, reflecting what Carson Group strategist Ryan Detrick described as “chip fatigue.”
Auto Deals Provide Buffer, but AI Remains Key
On July 16, Micron announced agreements with Qualcomm (NASDAQ:QCOM) and a consortium of automotive suppliers. The deals are designed to improve supply stability, establish pricing, and facilitate production planning. Chief Executive Sanjay Mehrotra noted that “memory and storage are critical enablers” for increasingly intelligent vehicles. Still, these contracts represent a relatively small portion of Micron’s current business.
Looking ahead, Micron projects fiscal fourth-quarter revenue of $50 billion, with a possible variance of $1 billion. The company expects a gross margin of approximately 86% and adjusted earnings of $31 per share, plus or minus $1.
Market Context and Broader Implications
The chip sector remains under pressure, with the SOX index ending the week 20.2% below its record high. Alphabet (NASDAQ:GOOGL) and Intel (NASDAQ:INTC) are set to report earnings this week, which will provide further insight into the strength of AI demand. Kevin Mahn, chief investment officer at Hennion & Walsh, warned that a downturn in AI spending could trigger “ripple effects across the entire AI ecosystem.”
Risks such as reduced AI capital expenditure and continued selling in the chip sector could test the sustainability suggested by Micron’s 86% margin outlook. While automotive contracts offer a buffer that extends further out, the main near-term focus remains on AI spending.
