Institutional Ownership
Quantum Corp
CUSIP 747906600COMQMCOQ1 2026
13D / 13G Filings
6
Schedule 13D/13G on record
Beneficial Filers
3
Distinct reporting persons
Largest Stake
41.4%
Max % of class reported
Institutional Holders
34
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
6 filings · latest Jan 12, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Jan 12, 2026 | Dialectic Technology Spv LLC | 13D/A | 41.4% | — | SEC |
| 2 | Dec 22, 2025 | Dialectic Technology Spv LLC | 13D/A | 37.3% | — | SEC |
| 3 | Oct 10, 2025 | Dialectic Technology Spv LLC | 13D | 16.7% | — | SEC |
| 4 | Feb 21, 2025 | Blue Torch Capital LP | 13D/A | 2.3% | — | SEC |
| 5 | Jan 31, 2025 | The Vanguard Group | 13G/A | 5.0% | 242.2K | SEC |
| 6 | Jan 6, 2025 | Blue Torch Capital LP | 13D | 7.7% | — | SEC |
Top Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 217.5K | $1.03M |
| 2 | Geode Capital Management, LLC | 159.2K | $756.5K |
| 3 | Ubs Group AG | 99.1K | $470.6K |
| 4 | State Street Corp | 72.8K | $345.9K |
| 5 | Sona Asset Management (Us) LLC | 70.1K | $332.9K |
| 6 | Marshall Wace, LLP | 37.5K | $178.3K |
| 7 | Northern Trust Corp | 28.8K | $136.6K |
| 8 | Lpl Financial LLC | 24.6K | $116.8K |
| 9 | Bank Of America Corp /De/ | 20.5K | $97.3K |
| 10 | Flagship Harbor Advisors, LLC | 17.2K | $81.6K |