Key Highlights

  • Micron (NASDAQ:MU) finished the November 4, 2026 session at USD 795.23, lower by 7.00%, after 35.90 million shares traded for about USD 28.5 billion. It ranked third on the most-active list by traded value.
  • Relative Volume came in at 1.40, while market data showed a trailing Earnings multiple of 10.72 and diluted EPS of USD 74.21, up 878.77% across twelve months.
  • On November 5 the stock sank 17.46% to USD 656.39, the day reports said building on a roughly USD 4.5 billion Taiwan memory plant was largely stalled.
  • The company stated that its Taiwan operations keep running normally and that it will continue negotiating with the Taoyuan workers' union.

What Triggered the Memory Selloff

Memory has been among 2026's top-performing trades, since AI servers require heavy volumes of high-bandwidth and standard DRAM, pushing prices and Micron's profits sharply higher. The midterm outcome undermined that narrative. With Democrats controlling Congress and the incoming Texas governor vowing to halt Data Center approvals, traders started to price in a slower build-out and looser memory supply. Memory shares dropped hard on November 4, with Sandisk falling 7.91% alongside Micron. The same theme boosted device makers such as Apple, which stands to benefit from lower memory costs. Micron's high share price and Market Value of roughly USD 900 billion meant that even a normal share count yielded a big dollar total. Relative volume of 1.40 indicates institutions, not just individual traders, were cutting positions. The broader semiconductor index declined 3.13% that same session.

The Taoyuan Fab Suspension Report

Company-specific news arrived the next day. Reports on November 5 indicated Micron had mostly paused building a fab in Taoyuan, Taiwan, intended to produce HBM and DRAM with operations targeted around 2028, following a disagreement with a local union over bonuses, wages and profit distribution. Taiwan generates roughly 60% of Micron's DRAM output. The Taoyuan union, representing about 2,400 of approximately 3,000 local employees, staged a symbolic 24-hour walkout on October 22, while a second accord was signed in Taichung in late October. The company offered no direct response on the suspension, though it affirmed operations were normal and that Supply confidence is intact. The stock declined 17.46% that day before chip shares bounced on November 6. The labor dispute matters because a prolonged standoff could postpone new capacity just as customers look for supply for 2027 and beyond, whereas a swift resolution would eliminate one of the stock's newer concerns.

Valuation Versus Cycle Risk and the Labor Talks

Key risks include a slowdown in data center construction, a Reversal of memory pricing after a steep climb, and labor disruption in Taiwan. A P/E of 10.72 reflects peak-cycle profits, which could contract quickly if prices soften. Watch union negotiations, any shift in the Taoyuan schedule, memory price trends and remarks from cloud buyers about Capital spending. The next earnings release and any news on HBM supply contracts should reveal whether Demand from AI buyers has shifted. Trailing EPS growth of 878.77% reveals how much earnings have already climbed, leaving space for disappointment if pricing turns.

Where Things Stand

Micron placed among the most active stocks on November 4 as traders unwound the memory trade after midterm results cast doubt on data center growth. The 7.00% decline was followed by a 17.46% fall on November 5 when the Taiwan plant report added pressure. Earnings remain very strong, yet the shares depend on memory prices, policy and labor negotiations. Resolution in Taiwan is the first thing investors will look for.