Quantum (QMCO)
Builds storage, archive, protection, and workflow systems for unstructured data.
$26.75
vs last close+1.10 (+4.29%)
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13F · 13D/G · Form 4
| Institutions | 36.67% | 14.45M shares | |
|---|---|---|---|
| 69 holders · as of Jun 30, 2026 | |||
| Insiders | 37.57% | 14.81M shares | |
| 16 holders · as of Aug 5, 2026 | |||
| Strategic holders | 0.96% | 378.6K shares | |
| 2 holders · as of Feb 7, 2020 | |||
| Other | 24.80% | 9.77M shares | |
| remainder | |||
39.41M company shares as of Sep 23, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
13F, as of Jun 30, 2026
69 holders · 14.45M shares · 35 new positions · 53 increased · 7 reduced · 8 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Alyeska Investment Group, L.P. | 2.65M | 6.73% | +2.65Mnew | Aug 14, 2026 |
| Two Seas Capital LP | 2.49M | 6.31% | +2.49Mnew | Aug 12, 2026 |
| Oaktree Capital Management LP | 2.01M | 5.10% | +2.01Mnew | Aug 14, 2026 |
| Neuberger Berman Group LLC | 1.16M | 2.95% | +1.16Mnew | Aug 13, 2026 |
| Ashford Capital Management Inc | 1.04M | 2.64% | +1.04Mnew | Aug 21, 2026 |
| Portolan Capital Management, LLC | 1.02M | 2.59% | +1.02M | Aug 14, 2026 |
| Marshall Wace, LLP | 713.1K | 1.81% | +675.5K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 605.5K | 1.54% | +66.3K | Aug 13, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| John Fichthornincl. Dialectic Technology SPV LLC, Dialectic Technology Manager LLC | 40.00% | 16.89M | 13D | Jun 8, 2026 |
| Alyeska Investment Group, L.P. | 6.74% | 2.65M | 13G | Aug 14, 2026 |
| Two Seas Capital LP | 6.30% | 2.49M | 13G | Aug 14, 2026 |
| Oaktree Capital Management LP | 5.11% | 2.01M | 13G | Aug 10, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 3, 2026 | Anthony Craythorneofficer: Chief Revenue Officer | Sale | 1,478 | $10.73 | 13,522 |
| Jul 2, 2026 | Hugues Meyrathdirector, officer: President & CEO | Sale | 6,232 | $10.51 | 118,468 |
| Jul 2, 2026 | Laura A. Nashofficer: Chief Accounting Officer | Sale | 260 | $10.51 | 10,770 |
| Apr 2, 2026 | Laura A. Nashofficer: Chief Accounting Officer | Sale | 109 | $5.44 | 11,030 |
| Oct 2, 2025 | Laura A. Nashofficer: Chief Accounting Officer | Sale | 611 | $10.86 | 11,139 |
| Oct 1, 2025 | Laura A. Nashofficer: Chief Accounting Officer | Sale | 118 | $9.91 | 11,750 |
| Oct 2, 2025 | Hugues Meyrathdirector, officer: President & CEO | Sale | 2,975 | $10.86 | 24,700 |
House and Senate disclosures
Not reported.