DaveManuel.com · Institutional Ownership · Who Owns It
QUANTUM CORP (QUTX)
Institutional ownership reported to the SEC as of Q2 2026, across 9 quarters.
65
Reporting holders
$164.5M
Reported value
0.2%
Of shares outstanding
3.4%
Calls
0.6%
Puts
+28
Holder change
Institutions report 14,453,127 shares against 7,697,746,967 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Alyeska Investment Group, L.P. | $29.2M | 2,653,928 | 0.08% | new | NEW |
| Two Seas Capital LP | $27.4M | 2,488,535 | 0.54% | new | NEW |
| OAKTREE CAPITAL MANAGEMENT LP | $22.1M | 2,011,678 | 0.31% | new | NEW |
| NEUBERGER BERMAN GROUP LLC | $12.8M | 1,163,315 | 0.01% | new | NEW |
| Portolan Capital Management, LLC | $11.2M | 1,020,120 | 0.42% | new | NEW |
| ASHFORD CAPITAL MANAGEMENT INC | $10.6M | 1,039,200 | 1.13% | new | NEW |
| MARSHALL WACE, LLP | $7.8M | 713,075 | 0.01% | 3q | +1800.1%+$7.4M |
| VANGUARD CAPITAL MANAGEMENT LLC | $6.7M | 605,541 | 0.00% | 2q | +12.3%+$728.9K |
| Manatuck Hill Partners, LLC | $3.9M | 350,000 | 1.28% | new | NEW |
| BlackRock, Inc. | $3.0M | 273,030 | 0.00% | 8q | +25.5%+$610.5K |
| SONA ASSET MANAGEMENT (US) LLC | $2.8M incl. $1.1M options CALL | 150,000 | 0.06% | 2q | +114.0%+$1.5M |
| JANE STREET GROUP, LLC | $2.3M CALL+PUT | options only | 0.00% | new | OPTIONS |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $2.2M incl. $1.4M options CALL+PUT | 69,775 | 0.00% | new | NEW |
| Cinctive Capital Management LP | $2.0M | 182,769 | 0.07% | new | NEW |
| BANK OF AMERICA CORP /DE/ | $1.9M | 170,130 | 0.00% | 8q | +730.5%+$1.6M |
| GEODE CAPITAL MANAGEMENT, LLC | $1.8M | 164,600 | 0.00% | 8q | +3.4%+$59.7K |
| RENAISSANCE TECHNOLOGIES LLC | $1.7M | 154,516 | 0.00% | new | NEW |
| CITADEL ADVISORS LLC | $1.5M CALL+PUT | options only | 0.00% | new | OPTIONS |
| Walleye Capital LLC | $1.3M | 120,044 | 0.00% | new | NEW |
| RAYMOND JAMES FINANCIAL INC | $1.1M | 103,836 | 0.00% | new | NEW |
| Centiva Capital, LP | $1.1M | 100,000 | 0.01% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $980.4K | 89,125 | 0.00% | 2q | +11.0%+$97.5K |
| KKM Financial LLC | $960.5K | 90,274 | 0.13% | new | NEW |
| Qube Research & Technologies Ltd | $890.7K | 80,977 | 0.00% | new | NEW |
| STATE STREET CORP | $835.1K | 75,914 | 0.00% | 8q | +4.3%+$34.1K |
| Cygnus Capital Advisors, LLC | $818.0K | 74,323 | 0.56% | 3q | -40.1%-$547.7K |
| Man Group plc | $754.5K | 68,593 | 0.00% | new | NEW |
| Informed Momentum Co LLC | $713.4K | 64,857 | 0.06% | new | NEW |
| UBS Group AG | $507.2K | 46,106 | 0.00% | 8q | -53.5%-$582.6K |
| SEI INVESTMENTS CO | $426.1K | 38,739 | 0.00% | new | NEW |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $380.6K | 34,601 | 0.01% | new | NEW |
| Squarepoint Ops LLC | $372.0K | 33,817 | 0.00% | new | NEW |
| NORTHERN TRUST CORP | $365.4K | 33,220 | 0.00% | 8q | +15.5%+$49.0K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $276.0K | 25,069 | 0.00% | 3q | +15.0%+$36.0K |
| MILLENNIUM MANAGEMENT LLC | $239.3K | 21,755 | 0.00% | new | NEW |
| GOLDMAN SACHS GROUP INC | $210.7K | 19,153 | 0.00% | new | NEW |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $178.6K | 16,240 | 0.00% | 2q | HELD |
| MORGAN STANLEY | $170.4K | 15,492 | 0.00% | 8q | +2.1%+$3.4K |
| CITIGROUP INC | $158.7K | 14,426 | 0.00% | new | NEW |
| Kovack Advisors, Inc. | $146.8K | 13,430 | 0.01% | 2q | +7.6%+$10.4K |
| Schonfeld Strategic Advisors LLC | $132.6K | 12,055 | 0.00% | new | NEW |
| WELLS FARGO & COMPANY/MN | $124.3K | 11,300 | 0.00% | 7q | +173.9%+$78.9K |
| FLAGSHIP HARBOR ADVISORS, LLC | $121.0K | 11,004 | 0.00% | 4q | -36.0%-$68.0K |
| Invesco Ltd. | $119.2K | 10,839 | 0.00% | new | NEW |
| TUDOR INVESTMENT CORP ET AL | $114.4K CALL | options only | 0.00% | new | OPTIONS |
| Vanguard Global Advisers, LLC | $66.0K | 6,000 | 0.00% | 2q | HELD |
| JPMORGAN CHASE & CO | $43.6K | 3,680 | 0.00% | 8q | +45900.0%+$43.5K |
| JONES FINANCIAL COMPANIES LLLP | $18.4K | 1,580 | 0.00% | 6q | +7.7%+$1.3K |
| BNP PARIBAS FINANCIAL MARKETS | $13.1K | 1,187 | 0.00% | 8q | +354.8%+$10.2K |
| FEDERATED HERMES, INC. | $12.7K | 1,158 | 0.00% | 3q | +38.7%+$3.6K |
| SBI Securities Co., Ltd. | $11.8K | 1,070 | 0.00% | 7q | -46.6%-$10.3K |
| ROYAL BANK OF CANADA | $8.0K | 765 | 0.00% | 5q | +497.7%+$6.7K |
| Tower Research Capital LLC (TRC) | $7.2K | 655 | 0.00% | new | NEW |
| OSAIC HOLDINGS, INC. | $5.3K | 485 | 0.00% | 8q | -49.7%-$5.3K |
| BARCLAYS PLC | $5.0K | 455 | 0.00% | 8q | -96.3%-$131.9K |
| HARBOUR INVESTMENTS, INC. | $2.0K | 183 | 0.00% | new | NEW |
| BFC Planning, Inc. | $1.9K | 172 | 0.00% | new | NEW |
| FMR LLC | $1.2K | 106 | 0.00% | new | NEW |
| EFG International AG | $1.1K | 100 | 0.00% | 3q | HELD |
| Global Retirement Partners, LLC | $715 | 65 | 0.00% | 2q | HELD |
| Continuum Advisory, LLC | $374 | 34 | 0.00% | new | NEW |
| Quarry LP | $187 | 17 | 0.00% | new | NEW |
| HOLLENCREST CAPITAL MANAGEMENT | $110 | 10 | 0.00% | 2q | -99.5%-$21.9K |
| Farther Finance Advisors, LLC | $44 | 4 | 0.00% | 8q | HELD |
| NewEdge Advisors, LLC | $0 | none filed | 0.00% | new | NEW |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 13 | $48.7M | 1,535,078 | 9 | 1 | 1 | 0.0% |
| Q2 2026 | 65 | $164.5M | 14,453,127 | 35 | 18 | 7 | 3.9% |
| Q1 2026 | 37 | $7.7M | 1,610,725 | 7 | 9 | 10 | 0.0% |
| Q4 2025 | 39 | $13.3M | 2,055,041 | 14 | 13 | 7 | 0.0% |
| Q3 2025 | 29 | $8.6M | 865,131 | 3 | 13 | 5 | 0.0% |
| Q2 2025 | 35 | $9.0M | 903,693 | 13 | 9 | 8 | 0.0% |
| Q1 2025 | 29 | $24.3M | 1,689,433 | 7 | 13 | 3 | 0.0% |
| Q4 2024 | 44 | $95.8M | 1,746,856 | 22 | 5 | 5 | 2.0% |
| Q3 2024 | 26 | $8.0M | 2,274,509 | 25 | 0 | 0 | 0.0% |