QUANTUM (QTM)
QTM moved a median of 0.00% 30 minutes after news, and 0.00% by the close. How QTM actually reacts to news — the realized, point-in-time move the market made, measured across 751 labeled events over its full measured history with zero look-ahead.
QTM’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 47% | 743 |
| 30-min | 0.00% | 46% | 743 |
| 60-min | 0.00% | 45% | 743 |
| to close | 0.00% | 42% | 743 |
| Middle 50% of QTM reactions | -0.97% to +1.05% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 751 |
Half of all QUANTUM news events land between -0.97% and +1.05% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when QTM moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to QTM's baseline. Nothing else.
Recent QTM events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K QUANTUM CORP /DE/ For: Oct 09 | SEC filing · Form 8-K | SEC EDGAR | +0.68% | -6.11% | |
| Form 8-K QUANTUM CORP /DE/ For: Sep 28 | SEC filing · Form 8-K | SEC EDGAR | +0.48% | +0.10% | |
| Quantum Appoints James C. Clancy as Chief Operating Officer | Press release | Business Wire | +0.48% | +0.10% | |
| Form S-8 QUANTUM CORP /DE/ | SEC filing · Form S-8 | SEC EDGAR | -0.90% | +6.02% | |
| Form 8-K QUANTUM CORP /DE/ For: Sep 15 | SEC filing · Form 8-K | SEC EDGAR | +0.34% | +1.05% | |
| Quantum Appoints Mike Heuer as Chief Information Officer | Press release | Business Wire | +1.79% | +1.57% | |
| Quantum Introduces Autonomous Data Management, Dramatically Reducing Storage Costs While Increasing Efficiency and Availability | Press release | Business Wire | -0.73% | -1.09% | |
| Form 8-K QUANTUM CORP /DE/ For: Sep 01 | SEC filing · Form 8-K | SEC EDGAR | -0.17% | -5.28% | |
| Quantum Appoints Hiral A. Patel as Chief Accounting Officer | Press release | Business Wire | -0.17% | -5.28% | |
| Quantum to Participate at the Lake Street Best Ideas Conference on September 10, 2026 | Press release | Business Wire | -1.17% | +1.34% | |
| Form 8-K QUANTUM CORP /DE/ For: Aug 11 | SEC filing · Form 8-K | SEC EDGAR | -0.52% | +0.36% | |
| Form 10-Q QUANTUM CORP /DE/ For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +8.20% | +33.06% | |
| Form ARS QUANTUM CORP /DE/ For: Mar 31 | SEC filing · Form ARS | SEC EDGAR | -0.70% | -1.49% | |
| Form DEF 14A QUANTUM CORP /DE/ For: Sep 15 | SEC filing · Form DEF | SEC EDGAR | -0.70% | -1.49% | |
| Form DEFA14A QUANTUM CORP /DE/ | SEC filing · Form DEFA14A | SEC EDGAR | -0.70% | -1.49% | |
| Quantum to Announce Fiscal First Quarter 2027 Financial Results on August 10, 2026 | Press release | Business Wire | -0.70% | -1.49% | |
| Form EFFECT QUANTUM CORP /DE/ | SEC filing · Form EFFECT | SEC EDGAR | -2.11% | -3.43% | |
| Form S-1 QUANTUM CORP /DE/ | SEC filing · Form S-1 | SEC EDGAR | +0.72% | +4.14% | |
| Form 10-K QUANTUM CORP /DE/ For: Mar 31 | SEC filing · Form 10-K | SEC EDGAR | -9.34% | +3.65% | |
| Form 8-K QUANTUM CORP /DE/ For: Jun 25 | SEC filing · Form 8-K | SEC EDGAR | -9.34% | +3.65% | |
| Quantum Reports Fiscal Fourth Quarter and Full Year 2026 Financial Results | Press release | Business Wire | -9.34% | +3.65% | |
| Quantum to Announce Fiscal Fourth Quarter and Full Year 2026 Financial Results on June 25, 2026 | Press release | Business Wire | -1.57% | -7.64% | |
| Quantum to Participate in the Northland Growth Conference on June 23 | Press release | Business Wire | +1.26% | +0.71% | |
| Form NT 10-K QUANTUM CORP /DE/ For: Mar 31 | SEC filing · Form NT | SEC EDGAR | +4.09% | -8.57% | |
| Quantum Corporation Files Form 12b-25 Notification of Late Filing | Press release | Business Wire | +4.09% | -8.57% | |
| Quantum Appoints Storage Industry Veteran Greg Knieriemen as Vice President of Marketing | Press release | Business Wire | +0.87% | +3.57% | |
| Quantum to Announce Fiscal Fourth Quarter and Full Year 2026 Financial Results on June 15, 2026 | Press release | Business Wire | +0.00% | -1.79% | |
| Form 8-K QUANTUM CORP /DE/ For: Jun 04 | SEC filing · Form 8-K | SEC EDGAR | -7.70% | -4.42% | |
| Form 8-K QUANTUM CORP /DE/ For: Jun 01 | SEC filing · Form 8-K | SEC EDGAR | -1.13% | +1.01% | |
| Quantum Announces Equity Financing to Strengthen Balance Sheet and Support Growth | Press release | Business Wire | +2.45% | +20.23% | |
| Quantum Announces Preliminary Fiscal Fourth Quarter 2026 Financial Results | Press release | Business Wire | +2.45% | +20.23% | |
| Form SD QUANTUM CORP /DE/ | SEC filing · Form SD | SEC EDGAR | +1.68% | +9.84% | |
| Quantum to Participate at the Needham Technology, Media & Consumer Conference on May 14 | Press release | Business Wire | +1.58% | +5.17% | |
| Quantum CatDV Showcases Automated Live Sports Production with North Shore Automation’s Stats Injector | Press release | Business Wire | +0.00% | -0.82% | |
| Quantum Responds to Industry-Wide Supply Chain and Power Disruption Ahead of NAB 2026 | Press release | Business Wire | -3.15% | -3.28% | |
| Quantum and Pink Elephant Partner to Deliver Sovereign, Low-Cost, Energy-Efficient Data Resilience Services in Europe | Press release | Business Wire | -0.19% | +5.79% | |
| Form EFFECT QUANTUM CORP /DE/ | SEC filing · Form EFFECT | SEC EDGAR | -0.77% | +4.05% | |
| Form S-1 QUANTUM CORP /DE/ | SEC filing · Form S-1 | SEC EDGAR | +0.77% | +6.92% | |
| Form S-8 QUANTUM CORP /DE/ | SEC filing · Form S-8 | SEC EDGAR | +0.77% | +6.92% | |
| Form 10-Q QUANTUM CORP /DE/ For: Dec 31 | SEC filing · Form 10-Q | SEC EDGAR | -7.36% | -14.80% | |
| Form 8-K QUANTUM CORP /DE/ For: Feb 17 | SEC filing · Form 8-K | SEC EDGAR | -7.36% | -14.80% | |
| Quantum Reports Fiscal Third Quarter 2026 Financial Results | Press release | Business Wire | -7.36% | -14.80% | |
| Quantum to Announce Fiscal Third Quarter 2026 Financial Results on February 17, 2026 | Press release | Business Wire | +1.51% | +3.70% | |
| Form 8-K QUANTUM CORP /DE/ For: Feb 02 | SEC filing · Form 8-K | SEC EDGAR | -0.73% | +2.29% | |
| Quantum Appoints William H. White as Chief Financial Officer | Press release | Business Wire | -0.73% | +2.29% | |
| Telestream DIVA Now Certified with Quantum ActiveScale and ActiveScale Cold Storage | Press release | Business Wire | +1.01% | -3.49% | |
| Form 8-K QUANTUM CORP /DE/ For: Jan 15 | SEC filing · Form 8-K | SEC EDGAR | -3.16% | -1.86% | |
| Quantum Announces Preliminary Fiscal Third Quarter 2026 Financial Results | Press release | Business Wire | -3.16% | -1.86% | |
| Quantum to Participate at the Needham Growth Conference on January 15 | Press release | Business Wire | -1.40% | -5.10% | |
| Form 8-K QUANTUM CORP /DE/ For: Dec 16 | SEC filing · Form 8-K | SEC EDGAR | +1.11% | +0.41% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the QTM section they belong to.
Where else QTM is measured.
QTM earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Arista Networks, Inc. (ANET) | 752 | -0.10% | 47% |
| IntriCon Corporation (IIN) | 751 | 0.00% | 45% |
| Perion Network Ltd - Ordinary Shares (PERI) | 750 | +0.16% | 56% |
| NANOMETRICS (NANO) | 739 | 0.00% | 49% |
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 →
Every ticker we measure the same way24
Apple (AAPL)
How AAPL actually reacts to news, measured.
NVIDIA (NVDA)
How NVDA actually reacts to news, measured.
Tesla (TSLA)
How TSLA actually reacts to news, measured.
Microsoft (MSFT)
How MSFT actually reacts to news, measured.
Advanced Micro Devices (AMD)
How AMD actually reacts to news, measured.
Amazon (AMZN)
How AMZN actually reacts to news, measured.
Alphabet (GOOG)
How GOOG actually reacts to news, measured.
Meta Platforms (META)
How META actually reacts to news, measured.
Broadcom (AVGO)
How AVGO actually reacts to news, measured.
JPMorgan Chase (JPM)
How JPM actually reacts to news, measured.
Visa (V)
How V actually reacts to news, measured.
Walmart (WMT)
How WMT actually reacts to news, measured.
Eli Lilly (LLY)
How LLY actually reacts to news, measured.
UnitedHealth Group (UNH)
How UNH actually reacts to news, measured.
Netflix (NFLX)
How NFLX actually reacts to news, measured.
Johnson & Johnson (JNJ)
How JNJ actually reacts to news, measured.
Exxon Mobil (XOM)
How XOM actually reacts to news, measured.
Home Depot (HD)
How HD actually reacts to news, measured.
Costco (COST)
How COST actually reacts to news, measured.
Mastercard (MA)
How MA actually reacts to news, measured.
Oracle (ORCL)
How ORCL actually reacts to news, measured.
Salesforce (CRM)
How CRM actually reacts to news, measured.
Bank of America (BAC)
How BAC actually reacts to news, measured.
Coca-Cola (KO)
How KO actually reacts to news, measured.
Walt Disney (DIS)
How DIS actually reacts to news, measured.
Browse all tickers
Every name we’ve measured, in one place.
How the numbers are made.
How is QUANTUM's median reaction calculated?
Every labeled QTM 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 751 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. 46% of QTM'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 QTM'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.