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QUANTUM (QMCO)
NASDAQ
$13.84+$0.03 (+0.25%)
Price as of Jun 23, 2026 7:32 PM EDT- $205.5MMarket Cap
- 71.43%1-Year Change
- Computer HardwareIndustry
QUANTUM (QMCO)
$13.84+$0.03 (+0.25%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
B. RILEY SECURITIES, INC. | 61.21% | 3.8M | +3.8M (+100.00%) | Dec 31, 2022 |
BLACKROCK INC. | 14.67% | 916,904 | -79,957 (-8.72%) | Jun 30, 2024 |
HEARTLAND ADVISORS INC | 13.60% | 850,000 | +50,000 (+5.88%) | Dec 31, 2021 |
VANGUARD GROUP INC | 10.01% | 625,538 | +321,941 (+51.47%) | Dec 31, 2025 |
N/A | 8.63% | 539,275 | +539,275 (+100.00%) | Mar 31, 2026 |
FRIESS ASSOCIATES LLC | 6.10% | 381,313 | +103,585 (+27.17%) | Dec 31, 2021 |
BREITHORN CAPITAL MANAGEMENT | 5.89% | 368,167 | +368,167 (+100.00%) | Jun 30, 2017 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
NEUBERGER BERMAN EQUITY FUNDS | 119.04% | 7.4M | 0 (0.00%) | Feb 28, 2026 |
VANGUARD INDEX FUNDS | 77.74% | 4.9M | 0 (0.00%) | Mar 31, 2026 |
180 DEGREE CAPITAL CORP. /NY/ | 71.49% | 4.5M | 0 (0.00%) | Jun 30, 2025 |
Starboard Investment Trust | 24.21% | 1.5M | 0 (0.00%) | Feb 28, 2026 |
FIDELITY CONCORD STREET TRUST | 13.66% | 853,700 | 0 (0.00%) | Feb 28, 2026 |
HEARTLAND GROUP INC | 13.60% | 850,000 | 0 (0.00%) | Mar 31, 2026 |
RBB FUND, INC. | 7.16% | 447,440 | 0 (0.00%) | Feb 28, 2026 |
Current Ownership Distribution
- Institutions621.6M (71.77%)
- Mutual Funds203.6M (23.51%)
- Insiders40.9M (4.72%)
- Other0 (0.00%)
Insider Transactions
- 4.72% (40.9M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 2Number of InsiderSelling (last 12 months)
- $606,961.46Amount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Nash Laura A. Chief Accounting Officer | Sell | Apr 02, 2026 | $592.96 | 109 | $5.44 | 11,030 |
Meyrath Hugues President & CEO | Award | Apr 01, 2026 | $0.00 | 850,000 | $0.00 | 850,000 |
Craythorne Anthony Chief Revenue Officer | Award | Apr 01, 2026 | $0.00 | 148,500 | $0.00 | 148,500 |
Nash Laura A. Chief Accounting Officer | Award | Apr 01, 2026 | $0.00 | 49,500 | $0.00 | 49,500 |
White William Hillis Chief Financial Officer | Award | Mar 04, 2026 | $0.00 | 25,000 | $0.00 | 25,000 |
Jaworksi Don | Award | Jan 01, 2026 | $0.00 | 12,000 | $0.00 | 39,675 |
White Yue Zhou | Award | Jan 01, 2026 | $0.00 | 12,000 | $0.00 | 41,139 |
FICHTHORN JOHN | Award | Jan 01, 2026 | $0.00 | 12,000 | $0.00 | 27,271 |
Meyrath Hugues President & CEO | Award | Jan 01, 2026 | $0.00 | 50,000 | $0.00 | 50,000 |
Craythorne Anthony Chief Revenue Officer | Award | Jan 01, 2026 | $0.00 | 15,000 | $0.00 | 15,000 |
Meyrath Hugues President & CEO | Award | Jan 01, 2026 | $0.00 | 62,500 | $0.00 | 124,700 |
FICHTHORN JOHN | Other | Dec 18, 2025 | $0.00 | 0 | $0.00 | 0 |
Dialectic Technology SPV LLC | Other | Dec 18, 2025 | $0.00 | 0 | $0.00 | 0 |
Blevins Tony J | Award | Nov 01, 2025 | $0.00 | 1,000 | $0.00 | 1,000 |
Clancy James C | Award | Nov 01, 2025 | $0.00 | 1,000 | $0.00 | 1,000 |
Meyrath Hugues President & CEO | Award | Nov 01, 2025 | $0.00 | 50,000 | $0.00 | 50,000 |
Meyrath Hugues President & CEO | Award | Nov 01, 2025 | $0.00 | 37,500 | $0.00 | 62,200 |
Meyrath Hugues President & CEO | Sell | Oct 02, 2025 | $32,308.50 | 2,975 | $10.86 | 24,700 |
Nash Laura A. Chief Accounting Officer | Sell | Oct 02, 2025 | $6,635.46 | 611 | $10.86 | 11,139 |
Nash Laura A. Chief Accounting Officer | Award | Oct 01, 2025 | $0.00 | 500 | $0.00 | 11,868 |
Nash Laura A. Chief Accounting Officer | Sell | Oct 01, 2025 | $1,169.38 | 118 | $9.91 | 11,750 |
FICHTHORN JOHN | Other | Sep 23, 2025 | $0.00 | 2.7M | $0.00 | 2.7M |
Nash Laura A. Chief Accounting Officer | Sell | Sep 12, 2025 | $2,101.32 | 284 | $7.40 | 11,368 |
FICHTHORN JOHN | Award | May 01, 2025 | $0.00 | 4,405 | $0.00 | 15,271 |
Moorehead Lewis W. Chief Accounting Officer | Award | Apr 21, 2025 | $0.00 | 333 | $0.00 | 25,150 |
Cabrera Brian E SVP Chief Admin Ofcr & Secy | Award | Apr 21, 2025 | $0.00 | 1,874 | $0.00 | 29,814 |
Moorehead Lewis W. Chief Accounting Officer | Sell | Apr 21, 2025 | $1,727.14 | 179 | $9.65 | 24,971 |
Lerner James J President & CEO | Award | Apr 21, 2025 | $0.00 | 5,828 | $0.00 | 113,632 |
Cabrera Brian E SVP Chief Admin Ofcr & Secy | Sell | Apr 21, 2025 | $10,401.41 | 1,078 | $9.65 | 28,736 |
Lerner James J President & CEO | Sell | Apr 21, 2025 | $26,862.26 | 2,784 | $9.65 | 110,848 |