Micron (MU) Stock: Why It Fell 17% and Is Bouncing Today

Quick answer

Micron Technology stock fell 17.5% to $656.39 on Nov 5, 2026, its largest one-day drop in at least a year, and was bouncing on Nov 6 at $701.86 at 10:15am ET, up 6.9%. Thursday's fall had three causes, and only one of them was about Micron itself. Investors sold anything tied to AI data centers after Democrats won both chambers of Congress on Nov 3 and newly elected governors pledged to stop or pause data center construction. Before the open, Bloomberg reported that Micron had paused plans for a $4.5 billion memory plant in Taiwan amid a labor dispute. And weak outlooks from Qualcomm and Arm hit the whole chip group, which fell 12%, its worst day since March 2020.

Our view: Bullish through December 17, 2026, the session after Micron reports fiscal first-quarter 2027 results on Dec 16. Three facts argue against the stock. Goldman Sachs estimated that 45% of planned U.S. data center capacity could face restrictions, and UBS put the risk at about 30% of expected 2028 additions, which is when analysts expect Micron's record earnings. Management said on Sept 30 that price increases should continue at "a more moderate pace," so the steepest part of the memory upturn may be behind it. And the shares are 27% below their 50-day average, with a labor dispute open at a site that makes part of its DRAM. Three facts argue for it. Micron says more than 75% of its 2027 output is already committed, so a 2028 policy risk does not touch the quarter it reports on Dec 16, which it guided to about $61.5 billion of revenue. The stock trades at a forward P/E of 3.3, a price that assumes earnings collapse. And a paused plant in Taiwan means less new memory supply in 2028, which supports prices rather than hurting them. We give more weight to the second group: the selloff priced a demand cut that has been pledged, not passed, while the next report rests on contracts already signed. We would move off Bullish if Micron closes below $650 in any later session, if Nvidia's Nov 17 outlook points to slower data center demand, or if a state or Congress passes an actual construction pause or the Taoyuan dispute stops production. This is a view on direction over that window, not a recommendation to trade the stock.

Micron daily closing price from Sep 28 to Nov 6, 2026, with the Oct 1 high close, the Nov 5 drop and the Nov 6 bounce marked

Key takeaways

Micron fell 17.5% to $656.39 on Nov 5, 2026, its largest one-day drop in at least a year, on 76.7 million shares, about 2.9 times its 20-day average.
The selloff was led by politics, not by Micron's numbers: Democrats' midterm wins raised fears that new limits on data center construction could slow AI spending, and the PHLX Semiconductor Index fell 12%, its worst day since March 2020.
Before the open, Bloomberg reported that Micron had paused a planned $4.5 billion memory plant in Taiwan amid a labor dispute. Micron says its Taiwan operations are running normally.
On Nov 6 the stock was $701.86 at 10:15am ET, up 6.9%, as chip stocks bounced. It is still 44% below its 52-week high of $1,255 and trades at a forward P/E of 3.3.
Our view is Bullish through December 17, 2026, the session after Micron reports fiscal first-quarter results on Dec 16, with more than 75% of its 2027 output already committed.

Table of contents

Nov 5, 2026: the memory group cracks
Nov 6, 2026: a bounce, not yet a turn
What Micron's numbers show
The bull case
The risks
What comes next

Nov 5, 2026: the memory group cracks

Micron closed Nov 4 at $795.23, already down from $983.23 on Oct 28. Before Thursday's open it slipped to about $754 by 9am as the Taiwan report spread. It opened at $752.69, touched $761.81 in the first minutes, and then fell for most of the day as selling moved from memory to the whole chip group. The low was $650.00 late in the session and the close was $656.39, a fall of $138.84. Volume was 76.7 million shares, about 2.9 times the 26.9 million 20-day average. Trefis noted it was Micron's largest one-day fall in the prior 365 days, and it came at the end of a 39.7% slide over the month.

What pushed it down:

Data center politics. Yahoo Finance reported that chip stocks fell "amid the threat that stricter regulation could slow data center construction" after Democrats' midterm wins. Goldman Sachs estimated that 45% of planned U.S. data center capacity could face restrictions after newly elected governors pledged to stop or pause construction, 24/7 Wall St. reported.
The Taiwan plant. Bloomberg reported that Micron paused work on its Fab 11E plant in Taoyuan amid a prolonged labor dispute. Reuters put the budget at $4.5 billion, and production had been due to start in 2028 for HBM and DRAM. Micron did not confirm the halt.
Chip outlooks. Qualcomm issued a weak profit forecast, citing higher-cost components, and Arm fell 13% after revenue guidance that was slightly above consensus but below what investors had priced in.

Micron's drop was in line with the memory and storage group, not an outlier. Sandisk fell 22.3%, Western Digital 17.4% and Seagate 16.3%, while AMD lost 17.3%. The VanEck Semiconductor ETF fell 11.2%, the Nasdaq 100 6.5% and the S&P 500 4.4%. We covered the market side of the day in why the VIX jumped.

Bar chart of one-day declines on Nov 5, 2026: Sandisk 22.3%, Micron 17.5%, Western Digital 17.4%, AMD 17.3%, Seagate 16.3%, VanEck Semiconductor ETF 11.2%, Qualcomm 9.5%, Nvidia 9.3%, Nasdaq 100 ETF 6.5%, S&P 500 ETF 4.4%

Nov 6, 2026: a bounce, not yet a turn

Micron traded near $706 at 4am and reached about $720 before 7am, up about 9.7%. It opened at $708.25, dipped to $688.67 in the first minutes and reached $724.80. At 10:15am it was $701.86, up 6.9% on 15.4 million shares. Sandisk was up 6.9%, AMD 10.8% and Nvidia 5.6%, while Western Digital and Seagate were flat, so the bounce is strongest in the names with the most AI exposure.

Two things helped. After Thursday's close, AI cloud provider IREN reported $228 million of revenue, a beat, and a $20.3 billion backlog, which TIKR said eased fears that AI data center spending is slowing; we covered that report in why IREN stock moved. And the October jobs report showed 165,000 new jobs, ahead of forecasts, with unemployment at 4.1%. Not everyone joined in: SK Hynix fell 10.4% in Seoul on Friday, catching up with Thursday's U.S. losses.

After the open, RSI(14) stood at 33, the shares sat 20% below their 20-day average, 27% below their 50-day average and 7% below their 200-day average, and they were 44% below their 52-week high of $1,255.00. Volume was running at about half its 20-day pace, which is thin for a rebound of this size.

What Micron's numbers show

Item	Fiscal Q4 2026 (to Sept 3)	Year earlier
Revenue	$54.23 billion	$11.32 billion
GAAP gross margin	86.8%	44.7%
GAAP diluted EPS	$32.87
Operating cash flow	$43.97 billion	$5.73 billion
Next quarter revenue guide	$61.5 billion, plus or minus $1.5 billion

For fiscal 2026, revenue was $133.19 billion against $37.38 billion in fiscal 2025, and Micron ended the year with $73.48 billion of cash, investments and restricted cash. Its core data center unit made $18.00 billion of revenue in the quarter at a 90% gross margin. On valuation, the forward P/E is 3.3, the trailing P/E is 9.5 and the price-to-sales ratio is 6.0. Short interest is 2.0% of the float, so there is little forced buying to drive a squeeze. The consensus analyst target is $1,631.56. For why forward and trailing multiples can tell such different stories in a cyclical business, see forward P/E vs trailing P/E and what normalized earnings are.

The bull case

The quarter that matters next is already mostly sold. Micron says more than 75% of its 2027 output is committed under its customer agreements, and CEO Sanjay Mehrotra said on Sept 30 that those agreements "provide added confidence in the durability of Micron's financial performance." A policy pause on data centers would take years to show up in orders, and the reported fear is about 2028 capacity. KC Rajkumar of LYNX Equity Strategies told 24/7 Wall St. that his checks found no election-related disruption in Asian memory markets. A slower Taiwan build also cuts new supply in 2028, the same year the demand worry is about. And at a forward P/E of 3.3 the price already assumes a sharp drop in earnings.

The risks

Memory is a cyclical business, and the market has seen low multiples at the top of past cycles. TIKR noted that Micron's multiple is close to where it sat at the 2017 and 2018 peak. If price increases slow, as the CFO said they would, estimates may stop rising even without a demand cut. The Taoyuan union is asking for 15% of operating profit for employees worldwide, and about 60% of Micron's DRAM comes from Taiwan, so a strike would hit output. And if a large state actually passes a construction pause, analysts will start cutting 2028 numbers fast. For how revisions move a stock, see why estimate revisions move stocks.

What comes next

Nov 12: Applied Materials reports and will say how much memory makers plan to spend in 2027.
Nov 17: Nvidia reports, the clearest read on data center demand.
Taoyuan talks: Micron and the Taoyuan union held talks on Nov 6 over profit sharing, with no deal reported yet.
Dec 16: Micron reports fiscal first-quarter results against its $61.5 billion guide.

We track moves like this one alongside more of today's biggest stock moves, including the earlier slide in Sandisk.

Frequently asked questions

Why did Micron stock fall on Nov 5, 2026?

Micron fell 17.5% to $656.39 in a broad chip selloff. Investors feared that Democrats' wins in the Nov 3 midterms would lead to limits on new U.S. data centers, which would slow demand for memory. Before the open, Bloomberg also reported that Micron had paused plans for a $4.5 billion plant in Taiwan amid a labor dispute, and weak outlooks from Qualcomm and Arm added to the pressure.

Why is Micron stock up today, Nov 6?

Chip stocks bounced after Thursday's 12% drop in the PHLX Semiconductor Index. IREN reported revenue of $228 million and a $20.3 billion backlog after Thursday's close, which eased fears that AI data center spending is slowing, and the October jobs report showed 165,000 new jobs. At 10:15am ET Micron was $701.86, up 6.9%.

Did Micron's own business change?

Not on the numbers. Micron's last report, on Sept 30, showed fiscal fourth-quarter revenue of $54.23 billion against $11.32 billion a year earlier and a gross margin of 86.8%, and it guided the current quarter to about $61.5 billion. The new items are the reported pause of a Taiwan plant and the risk that data center limits cut demand in 2028.

What is the Taiwan labor dispute about?

A union at Micron's Taoyuan site is seeking 15% of operating profit for employees worldwide, paid in cash. Workers there briefly stopped work in October. Micron says its Taiwan operations are normal and that it will keep negotiating. About 60% of Micron's DRAM is made in Taiwan.

When does Micron report next?

Micron is expected to report fiscal first-quarter 2027 results on Dec 16, 2026. Nvidia reports on Nov 17 and Applied Materials on Nov 12, and both will say something about AI and memory spending before then.

What is Dombey's view on Micron?

Bullish through December 17, 2026. We would move off that view if Micron closes below $650 in any later session, if Nvidia's Nov 17 outlook points to slower data center demand, or if a state or Congress passes an actual pause on data center construction rather than a pledge, or if the Taoyuan dispute stops production. This is a view on direction over that window, not a recommendation to trade the stock.

Sources

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By James Whitfield, Head of Equity Research, Dombey Capital

Published November 6, 2026 · 6 min read · Event-Driven Investing