Quantum Corp
QMCO- Exchange
- Nasdaq
- Industry
- Computer Storage Devices
- SEC CIK
- 0000709283
In the last 90 days, Quantum Corp insiders filed 0 open-market purchases and 3 sales; 60 institutions reported holding it in 13F filings for Q2 2026, worth $158.1M in total; Oaktree Capital is the only superinvestor holding it.
13F holders, Q3 2025
Institutional positions in Quantum Corp as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 29
- −6 vs. Q2 2025
- Shares held
- 865.1K
- −19.2K (−2.2%) vs. Q2 2025
- Total value
- $8.58M
- −$234.5K (−2.7%) vs. Q2 2025
- New holders
- 3
- 13 more added
- Sold out
- 9
- 4 more reduced
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting QMCO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 60 | $158.1M |
| Q1 2026 | 37 | $7.66M |
| Q4 2025 | 40 | $13.3M |
| Q3 2025 | 29 | $8.58M |
| Q2 2025 | 35 | $8.82M |
| Q1 2025 | 29 | $24.3M |
| Q4 2024 | 47 | $95.0M |
| Q3 2024 | 26 | $7.96M |
| Q2 2024 | 52 | $19.5M |
| Q1 2024 | 60 | $28.6M |
| Q4 2023 | 62 | $17.8M |
| Q3 2023 | 62 | $34.8M |
| Q2 2023 | 64 | $63.1M |
| Q1 2023 | 72 | $68.9M |
| Q4 2022 | 76 | $70.7M |
| Q3 2022 | 83 | $69.0M |
| Q2 2022 | 92 | $93.6M |
| Q1 2022 | 94 | $99.0M |
| Q4 2021 | 105 | $230.2M |
| Q3 2021 | 95 | $226.7M |
| Q2 2021 | 111 | $292.9M |
| Q1 2021 | 106 | $333.3M |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Quantum Corp; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Activest Wealth Management | 0 | $4 | 0.00% | 0 | Unchanged |
| JPMorgan Chase & Co | 8 | $79 | 0.00% | 00.0% | Unchanged |
| Rialto Wealth Management, LLC | 42 | $417 | 0.00% | 00.0% | Unchanged |
| UMA Financial Services, Inc. | 102 | $1.01K | 0.00% | +102 | New |
| FNY Investment Advisers, LLC | 273 | $2.00K | 0.00% | −394−59.1% | Reduced |
| Whittier Trust Co | 187 | $2.20K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 240 | $2.38K | 0.00% | −5,075−95.5% | Reduced |
| Fifth Third Bancorp | 295 | $2.93K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 304 | $3.02K | 0.00% | +300+7,500.0% | Added |
| Tower Research Capital LLC (TRC) | 427 | $4.24K | 0.00% | −295−40.9% | Reduced |
| Barclays PLC | 455 | $4.51K | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 700 | $6.94K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 895 | $8.48K | 0.00% | +401+81.2% | Added |
| Advisor Group Holdings, Inc. | 990 | $9.76K | 0.00% | +955+2,728.6% | Added |
| Bank of America Corp | 2,896 | $28.7K | 0.00% | +2,234+337.5% | Added |
| Morgan Stanley | 3,356 | $33.3K | 0.00% | −42,377−92.7% | Reduced |
| BNP Paribas Arbitrage, SA | 3,461 | $34.3K | 0.00% | +2,641+322.1% | Added |
| SBI Securities Co., Ltd. | 5,970 | $59.2K | 0.00% | +334+5.9% | Added |
| Hollencrest Capital Management | 6,560 | $65.1K | 0.00% | +4,560+228.0% | Added |
| Riverview Capital Advisers, LLC | 10,000 | $99.2K | 0.03% | +10,000 | New |
| Northern Trust Corp | 11,687 | $115.9K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 22,715 | $225.0K | 0.00% | +3,362+17.4% | Added |
| Flagship Harbor Advisors, LLC | 22,710 | $225.3K | 0.01% | +22,710 | New |
| State Street Corp | 27,347 | $271.3K | 0.00% | 00.0% | Unchanged |
| Quest Partners LLC | 35,536 | $352.5K | 0.02% | +30,829+655.0% | Added |
| Geode Capital Management, LLC | 79,427 | $788.2K | 0.00% | +10,043+14.5% | Added |
| BlackRock, Inc. | 162,338 | $1.61M | 0.00% | +21,027+14.9% | Added |
| UBS Group AG | 162,605 | $1.61M | 0.00% | +102,384+170.0% | Added |
| Vanguard Group Inc | 303,597 | $3.01M | 0.00% | +46,919+18.3% | Added |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −178,021−100.0% | Sold out |
| Sassicaia Capital Advisers LLC | 0 | $0 | 0.00% | −23,267−100.0% | Sold out |
| Apollon Wealth Management, LLC | 0 | $0 | 0.00% | −10,714−100.0% | Sold out |
| CIBC Private Wealth Group, LLC | 0 | $0 | 0.00% | −10,404−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −4,615−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −1,236−100.0% | Sold out |
| Covestor Ltd | 0 | $0 | 0.00% | −942−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −632−100.0% | Sold out |
| Fortitude Family Office, LLC | 0 | $0 | 0.00% | −46−100.0% | Sold out |