Quantum Corp
QMCO- Exchange
- Nasdaq
- Industry
- Computer Storage Devices
- SEC CIK
- 0000709283
In the last 90 days, Quantum Corp insiders filed 0 open-market purchases and 3 sales; 60 institutions reported holding it in 13F filings for Q2 2026, worth $158.1M in total; Oaktree Capital is the only superinvestor holding it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsLast 90 days, $84.1K in total
- 3
- 13F holdersQ2 2026, +23 vs. previous quarter
- 60
- 13F valueReported value at the end of Q2 2026
- $158.1M
- Superinvestors holdingAt the end of Q2 2026
- 1
Price chart
Superinvestors holding QMCO, Q2 2026
1 superinvestor reports holding Quantum Corp on Form 13F. Percentages are the stock's share of each portfolio.
Latest insider trades
Open-market purchases and sales by Quantum Corp insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 5, 2026 (view filing)4:10 PM ET | Aug 3 | 2 days | Craythorne AnthonyChief Revenue Officer | SSale | −1.48K | $10.73 | −$15.9K | −9.9%13.5K after | |
| Jul 7, 2026 (view filing)4:09 PM ET | Jul 2 | 5 days | Nash Laura A.Chief Accounting Officer | SSale | −260 | $10.51 | −$2.73K | −2.4%10.8K after | |
| Jul 7, 2026 (view filing)4:07 PM ET | Jul 2 | 5 days | Meyrath HuguesPresident & CEO | SSale | −6.23K | $10.51 | −$65.5K | −5.0%118.5K after | |
| Apr 3, 2026 (view filing) | Apr 2 | 1 day | Nash Laura A.Chief Accounting Officer | SSale | −109 | $5.44 | −$592.96 | −1.0%11.0K after | |
| Oct 3, 2025 (view filing) | Oct 1-2 | 2 days | Nash Laura A.Chief Accounting Officer | SSale | −729 | $10.71 | −$7.80K | −6.1%11.1K after | 2 lots |
| Oct 3, 2025 (view filing) | Oct 2 | 1 day | Meyrath HuguesPresident & CEO | SSale | −2.98K | $10.86 | −$32.3K | −10.7%24.7K after | |
| Sep 17, 2025 (view filing) | Sep 12 | 5 daysLate | Nash Laura A.Chief Accounting Officer | SSale | −284 | $7.40 | −$2.10K | −2.4%11.4K after | |
| Apr 23, 2025 (view filing) | Apr 21 | 2 days | Moorehead Lewis W.Chief Accounting Officer | SSale | −179 | $9.65 | −$1.73K | −0.7%25.0K after | |
| Apr 23, 2025 (view filing) | Apr 21 | 2 days | Lerner James JPresident & CEO | SSale | −2.78K | $9.65 | −$26.9K | −2.5%110.8K after | |
| Apr 23, 2025 (view filing) | Apr 21 | 2 days | Cabrera Brian ESVP Chief Admin Ofcr & Secy | SSale | −1.08K | $9.65 | −$10.4K | −3.6%28.7K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in Quantum Corp at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Alyeska Investment Group, L.P. | 2,653,928 | $29.2M | 0.08% | +2,653,928 | New |
| Two Seas Capital LP | 2,488,535 | $27.4M | 1.04% | +2,488,535 | New |
| Oaktree Capital Management LPSuperinvestorOaktree Capital | 2,011,678 | $22.1M | 0.42% | +2,011,678 | New |
| Neuberger Berman Group LLC | 1,163,315 | $12.8M | 0.01% | +1,163,315 | New |
| Portolan Capital Management, LLC | 1,020,120 | $11.2M | 0.42% | +1,020,120 | New |
| Ashford Capital Management Inc | 1,039,200 | $10.6M | 1.13% | +1,039,200 | New |
| Marshall Wace, LLP | 713,075 | $7.84M | 0.01% | +675,547+1,800.1% | Added |
| Vanguard Capital Management LLC | 605,541 | $6.66M | 0.00% | +66,266+12.3% | Added |
| Manatuck Hill Partners, LLC | 350,000 | $3.85M | 1.28% | +350,000 | New |
| BlackRock, Inc. | 273,030 | $3.00M | 0.00% | +55,498+25.5% | Added |