QuantumQMCO
13F holders, Q1 2026 (March 31)37holders −3
7new positions
10sold out
$4.75avg. 13F price*
At the end of Q1 2026, 37 institutions reported holding Quantum Corp. (QMCO) in their 13F filings, down 3 from Q4 2025. 7 opened new positions and 10 sold out. The largest holders were Vanguard Capital Management LLC ($2.6M), BlackRock, Inc. ($1.0M) and Geode Capital Management, LLC ($756K).
- Company
- Quantum Corp.
- CUSIP
- 747906600
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 7 | $541K |
| Exits | 10 | $3.4M |
All 13F filers, Q4 2025 → Q1 2026: 210,093 shares bought and 625,026 shares sold, net −414,933 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 37 holders
| Vanguard Capital Management LLC | 0.00% | — | 539,275 | $2.6M |
| BlackRock, Inc. | 0.00% | Reduce -1.5% | 217,532 | $1.0M |
| Geode Capital Management, LLC | 0.00% | Add +1.5% | 159,179 | $756K |
| Cygnus Capital Advisors, LLC | 0.40% | Add +78.7% | 124,086 | $590K |
| UBS Group AG | 0.00% | Reduce -40.3% | 99,068 | $471K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 80,263 | $381K |
| State Street Corp. | 0.00% | Reduce -19.7% | 72,814 | $346K |
| Sona Asset Management (us) LLC | 0.02% | New | 70,092 | $333K |
| Marshall Wace, LLP | 0.00% | Add +72.6% | 37,528 | $178K |
| Northern Trust Corp. | 0.00% | No change | 28,762 | $137K |
| LPL Financial LLC | 0.00% | Add +34.0% | 24,598 | $117K |
| T. Rowe Price Associates Inc. | 0.00% | Add +37.1% | 21,801 | $104K |
| Bank of America Corp. | 0.00% | Reduce -0.2% | 20,485 | $97K |
| Flagship Harbor Advisors, LLC | 0.00% | Reduce -35.4% | 17,185 | $82K |
| Bridgeway Capital Management, LLC | 0.00% | New | 16,240 | $77K |
| Morgan Stanley | 0.00% | Add +251.9% | 15,179 | $72K |
| Kovack Advisors, Inc. | 0.00% | New | 12,480 | $63K |
| Barclays PLC | 0.00% | Reduce -12.3% | 12,443 | $59K |
| R Squared Ltd | 0.03% | New | 12,245 | $58K |
| XTX Topco Ltd | 0.00% | Reduce -5.3% | 11,321 | $54K |
| Vanguard Global Advisers, LLC | 0.00% | — | 6,000 | $29K |
| Wells Fargo & Company | 0.00% | Add +17.0% | 4,125 | $20K |
| SBI Securities Co., Ltd. | 0.00% | Reduce -17.4% | 2,004 | $10K |
| Hollencrest Capital Management | 0.00% | New | 2,000 | $10K |
| Jones Financial Companies LLLP | 0.00% | Reduce -20.3% | 1,467 | $7K |
| Osaic Holdings, Inc. | 0.00% | Add +29.0% | 965 | $5K |
| Federated Hermes, Inc. | 0.00% | Add +66.7% | 835 | $4K |
| BNP Paribas Financial Markets | 0.00% | Reduce -74.4% | 261 | $1K |
| Royal Bank of Canada | 0.00% | Reduce -84.6% | 128 | $1K |
| EFG International AG | 0.00% | No change | 100 | $477 |
| National Bank of Canada | 0.00% | No change | 100 | $475 |
| Rialto Wealth Management, LLC | 0.00% | New | 87 | $414 |
| Lavaca Capital LLC | 0.00% | New | 39 | $185 |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 25 | $119 |
| JPMorgan Chase & Co. | 0.00% | No change | 8 | $34 |
| Farther Finance Advisors, LLC | 0.00% | No change | 4 | $20 |
| Activest Wealth Management | 0.00% | No change | 1 | $4 |
"% of holder's portfolio" is QMCO's weight in each manager's 13F, not the share of Quantum Corp. the manager owns.