2m 2m 2m 2m 2m 2m 2m
QUANTUM (QMCO)
NASDAQ
$17.55-$0.07 (-0.40%)
Price as of Oct 23, 2026 7:49 PM EDT- $694.4MMarket Cap
- 68.45%1-Year Change
- Computer HardwareIndustry
QUANTUM (QMCO)
$17.55-$0.07 (-0.40%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
B. RILEY SECURITIES, INC. | 9.71% | 3.8M | +3.8M (+100.00%) | Dec 31, 2022 |
ALYESKA INVESTMENT GROUP, L.P. | 6.73% | 2.7M | +2.7M (+100.00%) | Jun 30, 2026 |
TWO SEAS CAPITAL LP | 6.31% | 2.5M | +2.5M (+100.00%) | Jun 30, 2026 |
OAKTREE CAPITAL MANAGEMENT LP | 5.10% | 2.0M | +2.0M (+100.00%) | Jun 30, 2026 |
NEUBERGER BERMAN GROUP LLC | 2.95% | 1.2M | +1.2M (+100.00%) | Jun 30, 2026 |
ASHFORD CAPITAL MANAGEMENT INC | 2.64% | 1.0M | +1.0M (+100.00%) | Jun 30, 2026 |
PORTOLAN CAPITAL MANAGEMENT, LLC | 2.59% | 1.0M | +1.0M (+100.00%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 1.50% | 591,589 | +64,142 (+10.84%) | Jun 30, 2026 |
Advisors' Inner Circle Fund II | 0.23% | 90,274 | +1,781 (+1.97%) | Jul 31, 2026 |
TRUST FOR PROFESSIONAL MANAGERS | 0.06% | 23,683 | +23,683 (+100.00%) | Aug 31, 2026 |
ANCORA TRUST | 0.04% | 16,835 | +16,835 (+100.00%) | Mar 31, 2020 |
BRIDGEWAY FUNDS INC | 0.04% | 16,240 | 0 (0.00%) | Jun 30, 2026 |
T. Rowe Price Index Trust, Inc. | 0.03% | 11,000 | 0 (0.00%) | Jun 30, 2026 |
VANGUARD VALLEY FORGE FUNDS | 0.02% | 7,186 | +2,124 (+29.56%) | Jun 30, 2026 |
Current Ownership Distribution
- Institutions636.5M (71.23%)
- Mutual Funds216.3M (24.20%)
- Insiders40.8M (4.57%)
- Other0 (0.00%)
Insider Transactions
- 4.57% (40.8M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 3Number of InsiderSelling (last 12 months)
- $1.5MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Patel Hiral Chief Accounting Officer | Award | Oct 01, 2026 | $0.00 | 50,000 | $0.00 | 50,000 |
Tracy John R. | Award | Oct 01, 2026 | $0.00 | 12,000 | $0.00 | 39,000 |
White Yue Zhou | Award | Oct 01, 2026 | $0.00 | 12,000 | $0.00 | 53,139 |
Craythorne Anthony Chief Revenue Officer | Award | Oct 01, 2026 | $0.00 | 200,000 | $0.00 | 200,000 |
Jaworksi Don | Award | Oct 01, 2026 | $0.00 | 12,000 | $0.00 | 51,675 |
Meyrath Hugues President & CEO | Award | Oct 01, 2026 | $0.00 | 500,000 | $0.00 | 500,000 |
Blevins Tony J | Award | Oct 01, 2026 | $0.00 | 12,000 | $0.00 | 25,000 |
Craythorne Anthony Chief Revenue Officer | Sell | Aug 03, 2026 | $15,856.13 | 1,478 | $10.73 | 13,522 |
Meyrath Hugues President & CEO | Sell | Jul 02, 2026 | $65,498.32 | 6,232 | $10.51 | 118,468 |
Nash Laura A. Chief Accounting Officer | Sell | Jul 02, 2026 | $2,732.60 | 260 | $10.51 | 10,770 |
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 |