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.
13F holders, Q2 2026
Institutional positions in Quantum Corp as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 60
- +23 vs. Q1 2026
- Shares held
- 14.5M
- +12.8M (+797.3%) vs. Q1 2026
- Total value
- $158.1M
- +$150.4M (+1,964.7%) vs. Q1 2026
- New holders
- 31
- 18 more added
- Sold out
- 8
- 7 more reduced
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting QMCO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 60 | $158.1M |
| Q1 2026 | 37 | $7.66M |
| Q4 2025 | 40 | $13.3M |
| Q3 2025 | 29 | $8.58M |
| Q2 2025 | 35 | $8.82M |
| Q1 2025 | 29 | $24.3M |
| Q4 2024 | 47 | $95.0M |
| Q3 2024 | 26 | $7.96M |
| Q2 2024 | 52 | $19.5M |
| Q1 2024 | 60 | $28.6M |
| Q4 2023 | 62 | $17.8M |
| Q3 2023 | 62 | $34.8M |
| Q2 2023 | 64 | $63.1M |
| Q1 2023 | 72 | $68.9M |
| Q4 2022 | 76 | $70.7M |
| Q3 2022 | 83 | $69.0M |
| Q2 2022 | 92 | $93.6M |
| Q1 2022 | 94 | $99.0M |
| Q4 2021 | 105 | $230.2M |
| Q3 2021 | 95 | $226.7M |
| Q2 2021 | 111 | $292.9M |
| Q1 2021 | 106 | $333.3M |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Quantum Corp; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Farther Finance Advisors, LLC | 4 | $44 | 0.00% | 00.0% | Unchanged |
| Hollencrest Capital Management | 10 | $110 | 0.00% | −1,990−99.5% | Reduced |
| Quarry LP | 17 | $187 | 0.00% | +17 | New |
| Continuum Advisory, LLC | 34 | $374 | 0.00% | +34 | New |
| Global Retirement Partners, LLC | 65 | $715 | 0.00% | +65 | New |
| EFG International AG | 100 | $1.10K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 106 | $1.17K | 0.00% | +106 | New |
| Harbour Investments, Inc. | 183 | $2.01K | 0.00% | +183 | New |
| Barclays PLC | 455 | $5.00K | 0.00% | −11,988−96.3% | Reduced |
| Advisor Group Holdings, Inc. | 485 | $5.34K | 0.00% | −480−49.7% | Reduced |
| Tower Research Capital LLC (TRC) | 655 | $7.21K | 0.00% | +655 | New |
| Royal Bank of Canada | 765 | $8.00K | 0.00% | +637+497.7% | Added |
| SBI Securities Co., Ltd. | 1,070 | $11.8K | 0.00% | −934−46.6% | Reduced |
| Federated Hermes, Inc. | 1,158 | $12.7K | 0.00% | +323+38.7% | Added |
| BNP Paribas Arbitrage, SA | 1,187 | $13.1K | 0.00% | +926+354.8% | Added |
| Jones Financial Companies LLLP | 1,580 | $18.4K | 0.00% | +113+7.7% | Added |
| JPMorgan Chase & Co | 3,680 | $43.6K | 0.00% | +3,672+45,900.0% | Added |
| Vanguard Global Advisers, LLC | 6,000 | $66.0K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 10,839 | $119.2K | 0.00% | +10,839 | New |
| Flagship Harbor Advisors, LLC | 11,004 | $121.0K | 0.00% | −6,181−36.0% | Reduced |
| Wells Fargo & Company | 11,300 | $124.3K | 0.00% | +7,175+173.9% | Added |
| Schonfeld Strategic Advisors LLC | 12,055 | $132.6K | 0.00% | +12,055 | New |
| Kovack Advisors, Inc. | 13,430 | $146.8K | 0.01% | +950+7.6% | Added |
| Citigroup Inc | 14,426 | $158.7K | 0.00% | +14,426 | New |
| Morgan Stanley | 15,492 | $170.4K | 0.00% | +313+2.1% | Added |
| Bridgeway Capital Management, LLC | 16,240 | $178.6K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 19,153 | $210.7K | 0.00% | +19,153 | New |
| Millennium Management LLC | 21,755 | $239.3K | 0.00% | +21,755 | New |
| Price T Rowe Associates Inc | 25,069 | $276.0K | 0.00% | +3,268+15.0% | Added |
| Northern Trust Corp | 33,220 | $365.4K | 0.00% | +4,458+15.5% | Added |
| Squarepoint Ops LLC | 33,817 | $372.0K | 0.00% | +33,817 | New |
| Susquehanna Fundamental Investments, LLC | 34,601 | $380.6K | 0.01% | +34,601 | New |
| SEI Investments Co | 38,739 | $426.1K | 0.00% | +38,739 | New |
| UBS Group AG | 46,106 | $507.2K | 0.00% | −52,962−53.5% | Reduced |
| EAM Investors, LLC | 64,857 | $713.4K | 0.06% | +64,857 | New |
| Man Group plc | 68,593 | $754.5K | 0.00% | +68,593 | New |
| Susquehanna International Group, LLP | 69,775 | $767.5K | 0.00% | +69,775 | New |
| Cygnus Capital Advisors, LLC | 74,323 | $818.0K | 0.56% | −49,763−40.1% | Reduced |
| State Street Corp | 75,914 | $835.1K | 0.00% | +3,100+4.3% | Added |
| Qube Research & Technologies Ltd | 80,977 | $890.7K | 0.00% | +80,977 | New |
| KKM Financial LLC | 90,274 | $960.5K | 0.13% | +90,274 | New |
| Vanguard Fiduciary Trust Co | 89,125 | $980.4K | 0.00% | +8,862+11.0% | Added |
| Centiva Capital, LP | 100,000 | $1.10M | 0.04% | +100,000 | New |
| Raymond James Financial Inc | 103,836 | $1.14M | 0.00% | +103,836 | New |
| Walleye Capital LLC | 120,044 | $1.32M | 0.01% | +120,044 | New |
| Sona Asset Management (US) LLC | 150,000 | $1.65M | 0.06% | +79,908+114.0% | Added |
| Renaissance Technologies LLC | 154,516 | $1.70M | 0.00% | +154,516 | New |
| Geode Capital Management, LLC | 164,600 | $1.81M | 0.00% | +5,421+3.4% | Added |
| Bank of America Corp | 170,130 | $1.87M | 0.00% | +149,645+730.5% | Added |
| Cinctive Capital Management LP | 182,769 | $2.01M | 0.08% | +182,769 | New |
| BlackRock, Inc. | 273,030 | $3.00M | 0.00% | +55,498+25.5% | Added |
| Manatuck Hill Partners, LLC | 350,000 | $3.85M | 1.28% | +350,000 | New |
| Vanguard Capital Management LLC | 605,541 | $6.66M | 0.00% | +66,266+12.3% | Added |
| Marshall Wace, LLP | 713,075 | $7.84M | 0.01% | +675,547+1,800.1% | Added |
| Ashford Capital Management Inc | 1,039,200 | $10.6M | 1.13% | +1,039,200 | New |
| Portolan Capital Management, LLC | 1,020,120 | $11.2M | 0.42% | +1,020,120 | New |
| Neuberger Berman Group LLC | 1,163,315 | $12.8M | 0.01% | +1,163,315 | New |
| Oaktree Capital Management LPSuperinvestorOaktree Capital | 2,011,678 | $22.1M | 0.42% | +2,011,678 | New |
| Two Seas Capital LP | 2,488,535 | $27.4M | 1.04% | +2,488,535 | New |
| Alyeska Investment Group, L.P. | 2,653,928 | $29.2M | 0.08% | +2,653,928 | New |
| LPL Financial LLC | 0 | $0 | 0.00% | −24,598−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −12,245−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −11,321−100.0% | Sold out |
| National Bank of Canada | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Rialto Wealth Management, LLC | 0 | $0 | 0.00% | −87−100.0% | Sold out |
| Lavaca Capital LLC | 0 | $0 | 0.00% | −39−100.0% | Sold out |
| Federation des caisses Desjardins du Quebec | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| Activest Wealth Management | 0 | $0 | 0.00% | −1−100.0% | Sold out |