Quantum Corporation

Historical 13F Holders

Symbol
QMCO
CUSIP
747906600
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 747906600 since 12/18/2024, newest first.

Filer % of Class Filed
Alyeska Investment Group, L.P. 13G
6.7% 8/14/2026
Event 6/30/2026
Two Seas Capital LP 13G
6.3% 8/14/2026
Event 6/30/2026
Oaktree Capital Management LP 13G 5.1% 8/10/2026
Event 6/30/2026
Dialectic Technology SPV LLC 13D/A Amendment 3
40.0% 6/8/2026
Event 6/4/2026
Dialectic Technology SPV LLC 13D/A Amendment 2
41.4% 1/12/2026
Event 1/8/2026
Dialectic Technology SPV LLC 13D/A Amendment 1
37.3% 12/22/2025
Event 12/18/2025
Dialectic Technology SPV LLC 13D
16.7% 10/10/2025
Event 9/23/2025
Blue Torch Capital LP 13D/A Amendment 1
2.3% 2/21/2025
Event 2/13/2025
Vanguard Group Inc 13G/A Amendment 1 4.99% 1/31/2025
Event 12/31/2024
Blue Torch Capital LP 13D
7.7% 1/6/2025
Event 12/27/2024

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 3 1.49 M $47.3 M
2026 Q2 69 14.5 M $158 M
2026 Q1 37 1.61 M $7.66 M
2025 Q4 40 2.06 M $13.3 M
2025 Q3 30 865 k $8.58 M
2025 Q2 37 904 k $9.01 M
2025 Q1 30 1.69 M $24.3 M
2024 Q4 48 1.75 M $93.9 M
2024 Q3 27 2.27 M $7.96 M