Micron Technology, Inc. (MU)
MU moved a median of +0.00% 30 minutes after news, and +0.05% by the close. How MU actually reacts to news — the realized, point-in-time move the market made, measured across 1,242 labeled events over the last three years with zero look-ahead.
MU’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.04% | 53% | 1,241 |
| 30-min | +0.00% | 50% | 1,242 |
| 60-min | +0.02% | 51% | 1,242 |
| to close | +0.05% | 51% | 1,240 |
| Middle 50% of MU reactions | -1.02% to +0.87% |
|---|---|
| Median reaction (30-min) | +0.00% |
| Measured reactions | 1,242 |
Half of all Micron Technology, Inc. news events land between -1.02% and +0.87% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How MU reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 49 | -0.62% | 35% | -0.76% |
| Analyst downgrades | 22 | -0.43% | 46% | -0.15% |
| Coverage initiations | 36 | -0.38% | 39% | -0.33% |
| Rating reiterations | 392 | -0.23% | 39% | -0.22% |
| Price-target raises | 226 | -0.19% | 39% | -0.26% |
| Price-target cuts | 40 | -0.61% | 35% | -0.37% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. See how MU ranks against every other measured name →
That’s how MU usually reacts — get an email when it moves on news →Email me when MU moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to MU's baseline. Nothing else.
Recent MU events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K MICRON TECHNOLOGY INC For: Sep 30 | SEC filing · Form 8-K | SEC EDGAR | +0.01% | +4.20% | |
| Micron Technology, Inc. Reports Record Fiscal Fourth-Quarter and Full-Year 2026 Results | Press release | GlobeNewswire | +0.01% | +4.20% | |
| Micron Advances Memory Innovation With the World's First Ultra-Dense Module for Next-Generation Servers | Press release | GlobeNewswire | +0.00% | -1.15% | |
| Micron Appoints Deirdre Hanford to Lead Micron Research Labs | Press release | GlobeNewswire | -0.91% | -0.90% | |
| Enfuse Acquires Kubia to Move Physical AI From Pilot to Production | Press release | PR Web | +1.41% | +2.79% | |
| Form 8-K MICRON TECHNOLOGY INC For: Aug 24 | SEC filing · Form 8-K | SEC EDGAR | +0.49% | +1.30% | |
| Micron Announces Leadership Appointments to Accelerate Innovation and Growth | Press release | GlobeNewswire | +0.49% | +1.30% | |
| Micron Technology to Report Fiscal Fourth Quarter Results on September 30, 2026 | Press release | GlobeNewswire | -1.60% | -3.22% | |
| Micron Opens State-of-the-Art Training Center in Boise to Strengthen America’s Semiconductor Workforce | Press release | GlobeNewswire | -0.29% | -0.34% | |
| Micron Unveils Micron Research Labs, a U.S.-Based Long-Horizon Innovation Hub to Shape the Future of Memory and AI | Press release | GlobeNewswire | +1.21% | +4.17% | |
| Micron Ventures Launches $250 Million Fund to Invest in the Next Generation of AI | Press release | GlobeNewswire | -1.93% | -0.76% | |
| Micron Strengthens Automotive Ecosystem Supply Through Strategic Customer Agreements | Press release | GlobeNewswire | +0.78% | -1.71% | |
| Micron Announces Participation in Investor Event | Press release | GlobeNewswire | +0.78% | -1.71% | |
| Micron Accelerates U.S. Investments, Pours First Concrete at New York Fab | Press release | GlobeNewswire | -0.30% | -2.32% | |
| Micron Announces Up to $3 Billion Strategic Investment to Strengthen U.S. Semiconductor Ecosystem | Press release | GlobeNewswire | -0.30% | -2.32% | |
| Micron and Ford Sign Strategic Agreement to Strengthen Long-Term Memory Supply and Industry Resilience | Press release | GlobeNewswire | -0.29% | -2.14% | |
| Micron and General Motors Sign Strategic Agreement to Secure Supply and Accelerate Innovation | Press release | GlobeNewswire | -1.09% | -4.42% | |
| Micron Announces $250 Million Investment in Trump Accounts Reaching 1 Million Children, Families and the Future Workforce | Press release | GlobeNewswire | +0.53% | +0.84% | |
| Form 10-Q MICRON TECHNOLOGY INC For: May 28 | SEC filing · Form 10-Q | SEC EDGAR | +1.47% | -1.63% | |
| Form 8-K MICRON TECHNOLOGY INC For: Jun 24 | SEC filing · Form 8-K | SEC EDGAR | +1.47% | -1.63% | |
| Micron Technology, Inc. Reports Record Results for the Third Quarter of Fiscal 2026 | Press release | GlobeNewswire | +1.47% | -1.63% | |
| Micron and Anthropic Announce Strategic Agreement to Scale Next-Generation AI Infrastructure | Press release | GlobeNewswire | +0.05% | +1.24% | |
| Micron Selects Bechtel as Construction Partner for Historic New York Semiconductor Project | Press release | GlobeNewswire | -0.17% | -1.69% | |
| Defiance Launches MUZ: The First 2X Short ETF for Micron Technology, Inc. | Press release | GlobeNewswire | -1.59% | -5.20% | |
| Form 8-K MICRON TECHNOLOGY INC For: Jun 09 | SEC filing · Form 8-K | SEC EDGAR | -0.17% | -1.69% | |
| Micron Appoints Alexis Black Björlin to Board of Directors | Press release | GlobeNewswire | -0.17% | -1.69% | |
| Micron Powers AI Everywhere at COMPUTEX 2026 | Press release | GlobeNewswire | -2.52% | +1.34% | |
| Micron Technology to Report Fiscal Third Quarter Results on June 24, 2026 | Press release | GlobeNewswire | -0.82% | -0.83% | |
| Micron Advances Made-in-America Memory With Manufacturing Expansion in Virginia | Press release | GlobeNewswire | -0.31% | -0.78% | |
| Form SD MICRON TECHNOLOGY INC | SEC filing · Form SD | SEC EDGAR | +0.00% | +3.42% | |
| Micron Redefines AI Performance With Sampling of 256GB DDR5 Server Module | Press release | GlobeNewswire | -1.65% | -1.09% | |
| Industry-Leading 245TB Micron 6600 ION Data Center SSD Now Shipping | Press release | GlobeNewswire | +1.06% | +5.10% | |
| Micron Announces Participation in Investor Event | Press release | GlobeNewswire | -0.13% | -2.67% | |
| Form S-8 MICRON TECHNOLOGY INC | SEC filing · Form S-8 | SEC EDGAR | -0.71% | -2.41% | |
| SiMa.ai Secures Strategic Investment from Micron to Scale High-Performance, Power-Efficient Physical AI | Press release | PR Newswire | -0.32% | -2.11% | |
| Form 8-K MICRON TECHNOLOGY INC For: Mar 31 | SEC filing · Form 8-K | SEC EDGAR | +1.29% | +5.56% | |
| Micron Announces the Expiration of the Cash Tender Offers for Any and All of Certain Outstanding Senior Notes | Press release | GlobeNewswire | +1.29% | +5.56% | |
| Micron Announces the Pricing of the Cash Tender Offers for Any and All of Certain Outstanding Senior Notes | Press release | GlobeNewswire | +1.29% | +5.56% | |
| Form 8-K MICRON TECHNOLOGY INC For: Mar 25 | SEC filing · Form 8-K | SEC EDGAR | -1.38% | -0.24% | |
| Micron Announces Cash Tender Offers for Any and All of Certain Outstanding Senior Notes | Press release | GlobeNewswire | -1.38% | -0.24% | |
| Form 10-Q MICRON TECHNOLOGY INC For: Feb 26 | SEC filing · Form 10-Q | SEC EDGAR | +0.43% | +5.05% | |
| Form 8-K MICRON TECHNOLOGY INC For: Mar 18 | SEC filing · Form 8-K | SEC EDGAR | +0.43% | +5.05% | |
| Micron Technology, Inc. Reports Results for the Second Quarter of Fiscal 2026 | Press release | GlobeNewswire | +0.43% | +5.05% | |
| Micron in High-Volume Production of HBM4 Designed for NVIDIA Vera Rubin, PCIe Gen6 SSD and SOCAMM2 | Press release | GlobeNewswire | -0.28% | +2.15% | |
| Micron Completes Acquisition of PSMC’s Tongluo P5 Site in Taiwan | Press release | GlobeNewswire | +0.59% | -1.09% | |
| Micron Sets New Benchmark With the World's First High-Capacity 256GB LPDRAM SOCAMM2 for Data Center Infrastructure | Press release | GlobeNewswire | -1.47% | -1.66% | |
| Micron Celebrates Opening of India’s First Semiconductor Assembly and Test Facility | Press release | GlobeNewswire | +3.19% | +2.68% | |
| Micron Technology to Report Fiscal Second Quarter Results on March 18, 2026 | Press release | GlobeNewswire | +0.99% | +0.49% | |
| Micron Announces Participation in Investor Event | Press release | GlobeNewswire | +1.09% | +3.01% | |
| Micron Breaks Ground on Advanced Wafer Fabrication Facility in Singapore | Press release | GlobeNewswire | -0.27% | +1.29% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the MU section they belong to.
Where else MU is measured.
MU earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Vicor Corporation (VICR) | 1,244 | +0.01% | 50% |
| Teradata Corporation (TDC) | 1,243 | +0.02% | 50% |
| Five9, Inc. (FIVN) | 1,238 | -0.10% | 46% |
| STMicroelectronics N.V. (STM) | 1,238 | -0.07% | 47% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Technology names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Micron Technology, Inc.'s median reaction calculated?
Every labeled MU news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 1,242 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 50% of MU's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does MU's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.