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, Q4 2025
Institutional positions in Quantum Corp as of Dec 31, 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
- 40
- +11 vs. Q3 2025
- Shares held
- 2.06M
- +1.19M (+137.6%) vs. Q3 2025
- Total value
- $13.3M
- +$4.67M (+54.5%) vs. Q3 2025
- New holders
- 18
- 14 more added
- Sold out
- 7
- 6 more reduced
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Quantum Corp; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Avion Wealth | 68 | $0 | 0.00% | +68 | New |
| Activest Wealth Management | 1 | $5 | 0.00% | +1 | Added |
| Farther Finance Advisors, LLC | 4 | $26 | 0.00% | −300−98.7% | Reduced |
| JPMorgan Chase & Co | 8 | $52 | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 15 | $97 | 0.00% | +15 | New |
| Federation des caisses Desjardins du Quebec | 25 | $161 | 0.00% | +25 | New |
| Global Retirement Partners, LLC | 65 | $419 | 0.00% | +65 | New |
| National Bank of Canada | 100 | $644 | 0.00% | +100 | New |
| EFG International AG | 100 | $645 | 0.00% | +100 | New |
| Fifth Third Bancorp | 295 | $1.90K | 0.00% | 00.0% | Unchanged |
| Quattro Advisors LLC | 400 | $2.58K | 0.00% | +400 | New |
| Federated Hermes, Inc. | 501 | $3.23K | 0.00% | +501 | New |
| Tower Research Capital LLC (TRC) | 582 | $3.75K | 0.00% | +155+36.3% | Added |
| Advisor Group Holdings, Inc. | 748 | $4.82K | 0.00% | −242−24.4% | Reduced |
| Royal Bank of Canada | 833 | $5.00K | 0.00% | −21,882−96.3% | Reduced |
| BNP Paribas Arbitrage, SA | 1,019 | $6.57K | 0.00% | −2,442−70.6% | Reduced |
| Jones Financial Companies LLLP | 1,841 | $11.9K | 0.00% | +946+105.7% | Added |
| SBI Securities Co., Ltd. | 2,425 | $15.6K | 0.00% | −3,545−59.4% | Reduced |
| Wells Fargo & Company | 3,525 | $22.7K | 0.00% | +3,285+1,368.8% | Added |
| NBC Securities, Inc. | 4,000 | $25.8K | 0.00% | +4,000 | New |
| Morgan Stanley | 4,313 | $27.8K | 0.00% | +957+28.5% | Added |
| Millennium Management LLC | 11,244 | $72.5K | 0.00% | +11,244 | New |
| XTX Topco Ltd | 11,948 | $77.1K | 0.00% | +11,948 | New |
| Citigroup Inc | 12,828 | $82.7K | 0.00% | +12,828 | New |
| Barclays PLC | 14,197 | $91.6K | 0.00% | +13,742+3,020.2% | Added |
| Price T Rowe Associates Inc | 15,901 | $103.0K | 0.00% | +15,901 | New |
| Engineers Gate Manager LP | 16,407 | $105.8K | 0.00% | +16,407 | New |
| LPL Financial LLC | 18,364 | $118.4K | 0.00% | +18,364 | New |
| Bank of America Corp | 20,535 | $132.4K | 0.00% | +17,639+609.1% | Added |
| Marshall Wace, LLP | 21,740 | $140.2K | 0.00% | +21,740 | New |
| Flagship Harbor Advisors, LLC | 26,585 | $171.5K | 0.01% | +3,875+17.1% | Added |
| Northern Trust Corp | 28,762 | $185.5K | 0.00% | +17,075+146.1% | Added |
| Quest Partners LLC | 29,386 | $189.5K | 0.01% | −6,150−17.3% | Reduced |
| Cygnus Capital Advisors, LLC | 69,423 | $448.0K | 0.33% | +69,423 | New |
| State Street Corp | 90,714 | $585.1K | 0.00% | +63,367+231.7% | Added |
| Geode Capital Management, LLC | 156,871 | $1.01M | 0.00% | +77,444+97.5% | Added |
| UBS Group AG | 165,838 | $1.07M | 0.00% | +3,233+2.0% | Added |
| BlackRock, Inc. | 220,746 | $1.42M | 0.00% | +58,408+36.0% | Added |
| Portolan Capital Management, LLC | 477,214 | $3.08M | 0.16% | +477,214 | New |
| Vanguard Group Inc | 625,538 | $4.03M | 0.00% | +321,941+106.0% | Added |
| Riverview Capital Advisers, LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Hollencrest Capital Management | 0 | $0 | 0.00% | −6,560−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −700−100.0% | Sold out |
| Whittier Trust Co | 0 | $0 | 0.00% | −187−100.0% | Sold out |
| FNY Investment Advisers, LLC | 0 | $0 | 0.00% | −273−100.0% | Sold out |
| UMA Financial Services, Inc. | 0 | $0 | 0.00% | −102−100.0% | Sold out |
| Rialto Wealth Management, LLC | 0 | $0 | 0.00% | −42−100.0% | Sold out |