CENTENNIAL, CO
QUANTUM CORP /DE/QMCO— Latest position per institution from SEC 13F filings
15
Institutional holders
14.72M
Total shares held
212.83M
Estimated value
735.86K
Avg. position size
ALYESKA INVESTMENT GROUP, L.P.
CIK 1453072
Shares
2.65M
Value
29.19M
Filed
Jun 30, 2026
OAKTREE CAPITAL MANAGEMENT LP
CIK 949509
Shares
2.01M
Value
22.13M
Filed
Jun 30, 2026
TWO SEAS CAPITAL LP
CIK 1823138
Shares
1.49M
Value
47.29M
Filed
Sep 30, 2026
NEUBERGER BERMAN GROUP LLC
CIK 1465109
Shares
1.16M
Value
12.80M
Filed
Jun 30, 2026
ASHFORD CAPITAL MANAGEMENT INC
CIK 897070
Shares
1.04M
Value
10.55M
Filed
Jun 30, 2026
PORTOLAN CAPITAL MANAGEMENT, LLC
CIK 1350290
Shares
1.02M
Value
11.22M
Filed
Jun 30, 2026
ALLIANZ ASSET MANAGEMENT GMBH
CIK 1535323
Shares
962.13K
Value
13.84M
Filed
Mar 31, 2025
MARSHALL WACE, LLP
CIK 1318757
Shares
713.08K
Value
7.84M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
625.54K
Value
4.03M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
605.54K
Value
6.66M
Filed
Jun 30, 2026
LONG FOCUS CAPITAL MANAGEMENT, LLC
CIK 1602716
Shares
478K
Value
25.77M
Filed
Dec 31, 2024
MANATUCK HILL PARTNERS, LLC
CIK 1467902
Shares
350K
Value
3.85M
Filed
Jun 30, 2026
BLACKROCK, INC.
CIK 2012383
Shares
273.03K
Value
3M
Filed
Jun 30, 2026
SONA ASSET MANAGEMENT (US) LLC
CIK 1856405
Shares
250.10K
Value
2.75M
Filed
Jun 30, 2026
JANE STREET GROUP, LLC
CIK 1595888
Shares
208.50K
Value
2.29M
Filed
Jun 30, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
200.07K
Value
2.20M
Filed
Jun 30, 2026
CINCTIVE CAPITAL MANAGEMENT LP
CIK 1787258
Shares
182.77K
Value
2.01M
Filed
Jun 30, 2026
BANK OF AMERICA CORP /DE/
CIK 70858
Shares
170.13K
Value
1.87M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
164.60K
Value
1.81M
Filed
Jun 30, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
154.52K
Value
1.70M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | ALYESKA INVESTMENT GROUP, L.P. | 1453072 | 2.65M | 29.19M | Jun 30, 2026 |
| 2 | OAKTREE CAPITAL MANAGEMENT LP | 949509 | 2.01M | 22.13M | Jun 30, 2026 |
| 3 | TWO SEAS CAPITAL LP | 1823138 | 1.49M | 47.29M | Sep 30, 2026 |
| 4 | NEUBERGER BERMAN GROUP LLC | 1465109 | 1.16M | 12.80M | Jun 30, 2026 |
| 5 | ASHFORD CAPITAL MANAGEMENT INC | 897070 | 1.04M | 10.55M | Jun 30, 2026 |
| 6 | PORTOLAN CAPITAL MANAGEMENT, LLC | 1350290 | 1.02M | 11.22M | Jun 30, 2026 |
| 7 | ALLIANZ ASSET MANAGEMENT GMBH | 1535323 | 962.13K | 13.84M | Mar 31, 2025 |
| 8 | MARSHALL WACE, LLP | 1318757 | 713.08K | 7.84M | Jun 30, 2026 |
| 9 | VANGUARD GROUP INC | 102909 | 625.54K | 4.03M | Dec 31, 2025 |
| 10 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 605.54K | 6.66M | Jun 30, 2026 |
| 11 | LONG FOCUS CAPITAL MANAGEMENT, LLC | 1602716 | 478K | 25.77M | Dec 31, 2024 |
| 12 | MANATUCK HILL PARTNERS, LLC | 1467902 | 350K | 3.85M | Jun 30, 2026 |
| 13 | BLACKROCK, INC. | 2012383 | 273.03K | 3M | Jun 30, 2026 |
| 14 | SONA ASSET MANAGEMENT (US) LLC | 1856405 | 250.10K | 2.75M | Jun 30, 2026 |
| 15 | JANE STREET GROUP, LLC | 1595888 | 208.50K | 2.29M | Jun 30, 2026 |
| 16 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 200.07K | 2.20M | Jun 30, 2026 |
| 17 | CINCTIVE CAPITAL MANAGEMENT LP | 1787258 | 182.77K | 2.01M | Jun 30, 2026 |
| 18 | BANK OF AMERICA CORP /DE/ | 70858 | 170.13K | 1.87M | Jun 30, 2026 |
| 19 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 164.60K | 1.81M | Jun 30, 2026 |
| 20 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 154.52K | 1.70M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.