QMCO · Company research
Quantum Corporation (QMCO): Ownership & Institutional Holders
Reported institutional positions. Filing dates and sources matter.
RESEARCH CONTEXT
Understand the numbers
Reported institutional positions. Filing dates and sources matter. Use period, currency, units and source fields when interpreting values.
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Ownership & Institutional Holders data
Database-backed records only
| holder name | cik | period end | shares held | market value | ownership percent | shares change | shares change percent | filing date | data source |
|---|---|---|---|---|---|---|---|---|---|
| WELLS FARGO & COMPANY/MN | 72971 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11300 | 124300 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Karpus Management, Inc. | 1048703 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 469875 | 4802123 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| HighPoint Advisor Group LLC | 1616034 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18643 | 3083281 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| SMITH, MOORE & CO. | 200724 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8451 | 1397679 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| FLOW TRADERS U.S. LLC | 1466697 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18225 | 3014 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Westside Investment Management, Inc. | 1538383 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 20 | 3308 | — | — | — | Jul 27, 2026 | SEC_13F_DATASET |
| JONES FINANCIAL COMPANIES LLLP | 815917 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1580 | 18407 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| GEODE CAPITAL MANAGEMENT, LLC | 1214717 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 24253 | 293703 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| KINGSWOOD WEALTH ADVISORS, LLC | 1987855 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4549 | 752394 | — | — | — | Jul 27, 2026 | SEC_13F_DATASET |
| VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 605541 | 6660951 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Walleye Capital LLC | 1758720 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 120044 | 1320484 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| GILL CAPITAL PARTNERS, LLC | 729563 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 30 | 227000 | — | — | — | Aug 20, 2026 | SEC_13F_DATASET |
| BEARING POINT CAPITAL, LLC | 2052916 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1585 | 262127 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Sankala Group LLC | 2113426 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1793 | 272616 | — | — | — | Aug 18, 2026 | SEC_13F_DATASET |
| FEDERATED HERMES, INC. | 1056288 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1158 | 12738 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| THOROUGHBRED FINANCIAL SERVICES, LLC | 1091370 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8478 | 1402 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Strive Financial Group ,LLC | 2090040 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 17 | 2811 | — | — | — | Aug 4, 2026 | SEC_13F_DATASET |
| MERCER GLOBAL ADVISORS INC /ADV | 853758 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 250 | 2750 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Davis Capital Management | 1811806 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6 | 996 | — | — | — | Jul 16, 2026 | SEC_13F_DATASET |
| Quarry LP | 1965207 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 17 | 187 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BANK OF AMERICA CORP /DE/ | 70858 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 149656 | 1646216 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| IMC-Chicago, LLC | 1452861 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 13000 | 143000 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| AdvisorShares Investments LLC | 1425930 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 203564 | 736902 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| RB Capital Management, LLC | 1695582 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 30000 | 719700000 | — | — | — | Aug 18, 2026 | SEC_13F_DATASET |
| Basecamp Wealth Advisors LLC | 2115254 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 302 | 2283000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| FLAGSHIP HARBOR ADVISORS, LLC | 1691766 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11004 | 121044 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| MassMutual Private Wealth & Trust, FSB | 1103653 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 53 | 8765 | — | — | — | Jul 2, 2026 | SEC_13F_DATASET |
| Nemes Rush Group LLC | 1982273 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 74 | 559000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Silverleafe Capital Partners, LLC | 1535611 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3227 | 533734 | — | — | — | Jul 2, 2026 | SEC_13F_DATASET |
| Philadelphia Investment Partners, LLC | 2131511 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 75 | 567000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| First Command Advisory Services, Inc. | 1727336 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 46 | 1256 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| RLH Capital LLC | 2008031 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 35660 | 372266 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Forum Finance Group S.A. | 2133354 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1500 | 29000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Gen-Wealth Partners Inc | 2023375 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 285 | 47133 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| LEAVELL INVESTMENT MANAGEMENT, INC. | 924181 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6129 | 1013614 | — | — | — | Jul 21, 2026 | SEC_13F_DATASET |
| ASHFORD CAPITAL MANAGEMENT INC | 897070 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 639200 | 7031200 | — | — | — | Aug 21, 2026 | SEC_13F_DATASET |
| SG Americas Securities, LLC | 1313360 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 9180 | 111 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Washington Trust Advisors, Inc. | 1900099 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1102 | 182249 | — | — | — | Jul 29, 2026 | SEC_13F_DATASET |
| ADIRONDACK TRUST CO | 1054257 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 125 | 20672 | — | — | — | Jul 16, 2026 | SEC_13F_DATASET |
| BlackRock, Inc. | 2012383 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 33 | 363 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| ST GERMAIN D J CO INC | 831571 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 42 | 6946 | — | — | — | Jul 21, 2026 | SEC_13F_DATASET |
| Tower Research Capital LLC (TRC) | 1533421 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 655 | 7205 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| ALLSTATE CORP | 899051 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 54282 | 1302225000 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| DRW Securities, LLC | 1481986 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 107736 | 4173692 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Legacy Financial Advisors, Inc. | 1730810 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2041 | 337499 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| Rathbones Group PLC | 1351991 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2730 | 451487 | — | — | — | Jul 23, 2026 | SEC_13F_DATASET |
| Schonfeld Strategic Advisors LLC | 1665241 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 12055 | 132605 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| ELCO Management Co., LLC | 1690717 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2255 | 372932 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Curbstone Financial Management Corp | 1608057 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 24000 | 290640 | — | — | — | Jul 14, 2026 | SEC_13F_DATASET |
| HAGER INVESTMENT MANAGEMENT SERVICES, LLC | 2026645 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 155 | 25634 | — | — | — | Jul 20, 2026 | SEC_13F_DATASET |
| Bear Mountain Capital, Inc. | 2009419 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 25 | 3803 | — | — | — | Jul 20, 2026 | SEC_13F_DATASET |
| Winch Advisory Services, LLC | 1585822 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 43 | 7183 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Western Wealth Management, LLC | 1767902 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18603 | 3076465 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Arkos Global Advisors | 1769089 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 16775 | 1783 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| American Trust | 1905128 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1802 | 298058 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Manatuck Hill Partners, LLC | 1467902 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 350000 | 3850000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Bravera Wealth | 2126773 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 20918 | 3459419 | — | — | — | Jul 23, 2026 | SEC_13F_DATASET |
| Gunpowder Capital Management, LLC dba Oliver Wealth Management | 2114795 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 958 | 7242000 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| SONA ASSET MANAGEMENT (US) LLC | 1856405 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 146250 | 1608750 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| SEI INVESTMENTS CO | 350894 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 38420 | 422620 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| TrinityBridge Ltd | 1718570 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 6116 | 147000 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Fairscale Capital, LLC | 2032350 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 836 | 138258 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Bank of New York Mellon Corp | 1390777 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 596274 | 7220878 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| STATE STREET CORP | 93751 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 75914 | 835054 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| JANE STREET GROUP, LLC | 1595888 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 170600 | 1876600 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| FIRST UNITED BANK & TRUST | 1214183 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 25 | 4135 | — | — | — | Jul 20, 2026 | SEC_13F_DATASET |
| Strategic Wealth Partners, Ltd. | 1720777 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 145 | 23980 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Bradley & Co. Private Wealth Management, LLC | 1861678 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10 | 75000 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC | 1352860 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1177 | 194641 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 104000 | 1144000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| GABELLI & Co INVESTMENT ADVISERS, INC. | 932724 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 245500 | 2437815 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Planning Strategies Inc. | 2139665 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 102 | 16789 | — | — | — | Jul 27, 2026 | SEC_13F_DATASET |
| Rosenberg Matthew Hamilton | 1812103 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 163 | 26957 | — | — | — | Jul 17, 2026 | SEC_13F_DATASET |
| Continuum Advisory, LLC | 1846532 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 41 | 6774 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Essential Partners LLC | 2136442 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3094 | 2738000 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Alyeska Investment Group, L.P. | 1453072 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2653928 | 29193208 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| MILLENNIUM MANAGEMENT LLC | 1273087 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 21755 | 239305 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Parallel Advisors, LLC | 1690010 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1551 | 256506 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| Gould Capital, LLC | 1908965 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 400 | 3024000 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Farther Finance Advisors, LLC | 1992825 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18667 | 3083574 | — | — | — | Jul 17, 2026 | SEC_13F_DATASET |
Informational research only, not financial advice. Forecasts are uncertain and can be wrong.