New York, Feb 5, 2026, 16:05 EST — After-hours
- Micron rebounded roughly 0.7% late Thursday, recovering some ground after a sharp decline the previous day
- Chip shares have been volatile as investors reevaluate AI-driven valuations and adjust spending outlooks
- A filing revealed Micron’s chief business officer offloaded shares earlier this week
Micron Technology Inc shares edged up roughly 0.7% to $381.91 late Thursday in U.S. trading, swinging between $364 and $390.91 earlier in the session. Roughly 35.5 million shares changed hands.
The whipsaw is key because Micron has become the go-to proxy for the AI data-center boom, and investors want to know how fast new capital spending will turn into profits. “This is the first time we’ve seen large-cap tech go through a really large capex cycle,” said Tom Hainlin, an investment strategist at U.S. Bank Wealth Management, as Alphabet announced plans for up to $185 billion in capex by 2026 and Amazon slipped ahead of earnings after the bell. Melissa Brown, managing director of investment decision research at SimCorp, called the AI trade “perhaps the extinguisher this year.” Reuters
Chip stocks stumbled on Wednesday, dragging the PHLX semiconductor index down 4.4%. AMD plunged 17%, while Nvidia dropped 3.4%. Jed Ellerbroek, portfolio manager at Argent Capital, summed up the mood: “The market is suddenly skeptical and concerned about it,” pointing to the difficulty in valuing the AI expansion. Reuters
Micron took a hit Wednesday, dropping 9.5% to close at $379.40, after dipping as low as $363.90 during the session. Roughly 57 million shares traded hands, according to MarketBeat data. The stock had ended Tuesday at $419.44. MarketBeat
A recent filing gave traders a fresh data point on insider moves. On Feb. 4, a Form 4 revealed that EVP and Chief Business Officer Sumit Sadana sold 25,000 Micron shares two days earlier, on Feb. 2, at weighted average prices between $429 and $432. After the sale, he still held 248,021 shares. Micron Technology
Micron produces DRAM and NAND memory chips, components found in devices ranging from smartphones to large data centers. High-bandwidth memory, or HBM, a faster type of DRAM placed close to AI accelerators, has drawn particular interest from investors watching the sector’s expansion.
This week’s stock swings seem driven less by company news and more by sentiment around the entire AI sector. When funds pull back from high-multiple tech, Micron usually feels the ripple.
Supply chain issues remain front and center. Qualcomm reported that memory shortages are throttling handset production, highlighting how limited component supply can disrupt electronics manufacturing despite steady end-user demand. MarketWatch
Micron’s downside risk boils down to something straightforward: a shift in sentiment leads to weaker orders. Should cloud clients scale back data-center projects, or if memory prices fall as supply tightens, earnings estimates could be revised sharply lower.
Coming up, fresh tests of risk appetite may steer chip stocks heading into next week. The U.S. employment report, pushed back, is now set for Feb. 11, with January’s CPI report following on Feb. 13, the Bureau of Labor Statistics announced. Reuters
