Who Holds Quantum Corp /de/ (QMCO)? 59 Institutional Holders, Q2 2026
Managers with more than $100 million in US equities report their holdings on Form 13F within 45 days of each quarter end. Quarter ended 30 Jun 2026: 59 holders, $157 million in total.
Largest holders
The 59 largest by value. Change in shares against Q1 2026.
| Manager | Shares | Value | Change | |
|---|---|---|---|---|
| Alyeska Investment Group, L.P. | 2,653,928 | $29 million | New | 13F |
| Two Seas Capital LP | 2,488,535 | $27 million | New | 13F |
| OAKTREE CAPITAL MANAGEMENT LP | 2,011,678 | $22 million | New | 13F |
| NEUBERGER BERMAN GROUP LLC | 1,163,315 | $13 million | New | 13F |
| Portolan Capital Management, LLC | 1,020,120 | $11 million | New | 13F |
| ASHFORD CAPITAL MANAGEMENT INC | 1,039,200 | $11 million | New | 13F |
| MARSHALL WACE, LLP | 713,075 | $8 million | +1800% | 13F |
| VANGUARD CAPITAL MANAGEMENT LLC | 605,541 | $7 million | +12% | 13F |
| Manatuck Hill Partners, LLC | 350,000 | $4 million | New | 13F |
| BlackRock, Inc. | 273,030 | $3 million | +26% | 13F |
| Cinctive Capital Management LP | 182,769 | $2 million | New | 13F |
| BANK OF AMERICA CORP /DE/ | 170,130 | $2 million | +731% | 13F |
| GEODE CAPITAL MANAGEMENT, LLC | 164,600 | $2 million | +3% | 13F |
| RENAISSANCE TECHNOLOGIES LLC | 154,516 | $2 million | New | 13F |
| SONA ASSET MANAGEMENT (US) LLC | 150,000 | $2 million | +114% | 13F |
| Walleye Capital LLC | 120,044 | $1 million | New | 13F |
| RAYMOND JAMES FINANCIAL INC | 103,836 | $1 million | New | 13F |
| Centiva Capital, LP | 100,000 | $1 million | New | 13F |
| VANGUARD FIDUCIARY TRUST CO | 89,125 | $980,375 | +11% | 13F |
| KKM Financial LLC | 90,274 | $960,515 | New | 13F |
| Qube Research & Technologies Ltd | 80,977 | $890,747 | New | 13F |
| STATE STREET CORP | 75,914 | $835,054 | +4% | 13F |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 69,775 | $767,525 | New | 13F |
| Man Group plc | 68,593 | $754,523 | New | 13F |
| Informed Momentum Co LLC | 64,857 | $713,427 | New | 13F |
| UBS Group AG | 46,106 | $507,166 | -53% | 13F |
| SEI INVESTMENTS CO | 38,739 | $426,150 | New | 13F |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | 34,601 | $380,611 | New | 13F |
| Squarepoint Ops LLC | 33,817 | $371,987 | New | 13F |
| NORTHERN TRUST CORP | 33,220 | $365,420 | +15% | 13F |
| MILLENNIUM MANAGEMENT LLC | 21,755 | $239,305 | New | 13F |
| GOLDMAN SACHS GROUP INC | 19,153 | $210,683 | New | 13F |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 16,240 | $178,640 | +0% | 13F |
| MORGAN STANLEY | 15,492 | $170,412 | +2% | 13F |
| CITIGROUP INC | 14,426 | $158,686 | New | 13F |
| Kovack Advisors, Inc. | 13,430 | $146,790 | +8% | 13F |
| Schonfeld Strategic Advisors LLC | 12,055 | $132,605 | New | 13F |
| WELLS FARGO & COMPANY/MN | 11,300 | $124,300 | +174% | 13F |
| FLAGSHIP HARBOR ADVISORS, LLC | 11,004 | $121,044 | -36% | 13F |
| Invesco Ltd. | 10,839 | $119,229 | New | 13F |
| Vanguard Global Advisers, LLC | 6,000 | $66,000 | +0% | 13F |
| JPMORGAN CHASE & CO | 3,680 | $43,608 | +45900% | 13F |
| JONES FINANCIAL COMPANIES LLLP | 1,580 | $18,407 | +8% | 13F |
| BNP PARIBAS FINANCIAL MARKETS | 1,187 | $13,057 | +355% | 13F |
| FEDERATED HERMES, INC. | 1,158 | $12,738 | +39% | 13F |
| SBI Securities Co., Ltd. | 1,070 | $11,770 | -47% | 13F |
| ROYAL BANK OF CANADA | 765 | $8,000 | +498% | 13F |
| Tower Research Capital LLC (TRC) | 655 | $7,205 | New | 13F |
| OSAIC HOLDINGS, INC. | 485 | $5,339 | -50% | 13F |
| BARCLAYS PLC | 455 | $5,005 | -96% | 13F |
| HARBOUR INVESTMENTS, INC. | 183 | $2,013 | New | 13F |
| FMR LLC | 106 | $1,166 | New | 13F |
| EFG International AG | 100 | $1,099 | +0% | 13F |
| Global Retirement Partners, LLC | 65 | $715 | New | 13F |
| Continuum Advisory, LLC | 34 | $374 | New | 13F |
| PRICE T ROWE ASSOCIATES INC /MD/ | 25,069 | $276 | +15% | 13F |
| Quarry LP | 17 | $187 | New | 13F |
| HOLLENCREST CAPITAL MANAGEMENT | 10 | $110 | -99% | 13F |
| Farther Finance Advisors, LLC | 4 | $44 | +0% | 13F |
Questions and answers
- How many institutions hold Quantum Corp /de/?
- 59 managers reported Quantum Corp /de/ on Form 13F for the quarter ended 30 June 2026, against 37 the quarter before.
- Who is the largest institutional holder of Quantum Corp /de/?
- Alyeska Investment Group, L.P., with 2,653,928 shares worth $29 million on its 13F for Q2 2026.
- How many institutions bought or sold out of Quantum Corp /de/ in Q2 2026?
- 31 managers reported a new position and 9 reported none after holding it the quarter before.
Source: SEC EDGAR, Form 13F (public domain). Counts and values as filed. Cite this page: Tamarly Intelligence, "Who holds Quantum Corp /de/, Q2 2026", https://app.tamarly.ai/holders/quantum-de, built from SEC EDGAR.
Research from public records, not investment advice. Tamarly holds no investment positions. By reading these pages you accept the Terms of Use; figures can be late or wrong, so check the linked source before relying on one. Terms and policies.