QMCO — QUANTUM CORP /DE/
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2020-02-03.
Performance
Technicals
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Measured signals that fired on QMCO
| date | signal | measured base rate |
|---|---|---|
| 2026-08-20 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-08-11 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-08-11 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-21 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-06-26 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-06-04 | Volume shock without a price move price | -1.33% over 21 days · t = -4.53 · n = 16,432 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-03 | Craythorne Anthony Chief Revenue Officer | Open-market sale | 1.5K | 10.73 | 15.9K |
| 2026-07-02 | Meyrath Hugues President & CEO | Open-market sale | 6.2K | 10.51 | 65.5K |
| 2026-07-02 | Nash Laura A. Chief Accounting Officer | Open-market sale | 260 | 10.51 | 2.7K |
| 2026-06-04 | FICHTHORN JOHN Director | Conversion | 11.0M | 5.19 | 57.2M |
| 2026-06-04 | Dialectic Technology SPV LLC 10% owner | Conversion | 11.0M | 5.19 | 57.2M |
| 2026-06-04 | FICHTHORN JOHN Director | Grant or award | 3.1M | 5.19 | 16.0M |
| 2026-06-04 | Dialectic Technology SPV LLC 10% owner | Grant or award | 3.1M | 5.19 | 16.0M |
| 2026-04-02 | Nash Laura A. Chief Accounting Officer | Open-market sale | 109 | 5.44 | 593 |
| 2026-03-04 | White William Hillis Chief Financial Officer | Grant or award | 25.0K | 0.00 | 0 |
| 2026-01-01 | Clancy James C Director | Grant or award | 12.0K | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 2.6M | 539.3K |
| BlackRock, Inc. | 1.0M | 217.5K |
| GEODE CAPITAL MANAGEMENT, LLC | 756.5K | 159.2K |
| UBS Group AG | 470.6K | 99.1K |
| VANGUARD FIDUCIARY TRUST CO | 381.2K | 80.3K |
| STATE STREET CORP | 345.9K | 72.8K |
| SONA ASSET MANAGEMENT (US) LLC | 332.9K | 70.1K |
| MARSHALL WACE, LLP | 178.3K | 37.5K |
| NORTHERN TRUST CORP | 136.6K | 28.8K |
| LPL Financial LLC | 116.8K | 24.6K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Quantum Corp /de/ (QMCO) filed form 8-K · 2026-08-14 · SEC EDGAR
- S&P 500 Falls for Second Session Ahead of Inflation Report: Investor Sentiment Weakens, Fear & Greed Index Remains in ‘Greed’ Zone · 2026-08-12 · benzinga
- Quantum Corp /de/ (QMCO) filed form 8-K · 2026-08-10 · SEC EDGAR
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