Quantum Ownership | Who Owns Quantum?
Quantum Ownership Summary
Quantum is owned by 18.02% institutional investors, 11.36% insiders, and 70.62% retail investors. Marshall wace, llp is the largest institutional shareholder, holding 3.63% of QMCO shares. Neuberger Berman Intrinsic Value I is the top mutual fund, with 7.76% of its assets in Quantum shares.
QMCO Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Quantum | 18.02% | 11.36% | 70.62% |
| Sector | Technology Stocks | 143.99% | 12.56% | -56.55% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Marshall wace, llp | 178.02K | 3.63% | $1.77M |
| Blackrock funding, inc. /de | 141.31K | 2.88% | $1.41M |
| Geode capital management | 1.02M | 1.06% | $416.72K |
| Blackrock | 916.90K | 0.96% | $375.11K |
| Sassicaia capital advisers | 23.27K | 0.47% | $231.97K |
| State street | 342.33K | 0.36% | $140.05K |
| Cibc private wealth group | 10.40K | 0.21% | $103.73K |
| Price t rowe associates inc /md/ | 100.60K | 0.10% | $41.00K |
| Raymond james financial | 4.62K | 0.09% | $46.01K |
| Bridgeway capital management | 84.80K | 0.09% | $34.69K |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Sassicaia capital advisers | 23.27K | 0.15% | $231.97K |
| Covestor | 942.00 | 0.01% | $9.00K |
| Fny investment advisers | 667.00 | 0.00% | $6.00K |
| Marshall wace, llp | 178.02K | 0.00% | $1.77M |
| Bridgeway capital management | 84.80K | 0.00% | $34.69K |
| Cibc private wealth group | 10.40K | 0.00% | $103.73K |
| National bank of canada /fi/ | - | - | - |
| Long focus capital management | - | - | - |
| Whittier trust | 187.00 | - | $1.86K |
| Renaissance | - | - | - |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Marshall wace, llp | 178.02K | 0.00% | 178.02K |
| Geode capital management | 1.02M | - | 55.63K |
| Sassicaia capital advisers | 23.27K | 0.15% | 23.27K |
| Blackrock funding, inc. /de | 141.31K | - | 12.08K |
| Cibc private wealth group | 10.40K | 0.00% | 10.40K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Neuberger berman group | - | - | -14.31M |
| Long focus capital management | - | - | -9.17M |
| Vanguard group | - | - | -5.02M |
| Tcw group | - | - | -2.12M |
| Pacific ridge capital partners | - | - | -1.26M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Sassicaia capital advisers | 23.27K | 0.15% | 23.27K | $231.97K |
| Simplex trading | 3.90K | - | 3.90K | $1.00K |
| Covestor | 942.00 | 0.01% | 942.00 | $9.00K |
| Newedge advisors | 700.00 | - | 700.00 | $6.98K |
| Fny investment advisers | 667.00 | 0.00% | 667.00 | $6.00K |
Sold Out
| Holder | Change |
|---|---|
| Cornerstone planning group | -5.00 |
| Fmr | -15.00 |
| National bank of canada /fi/ | -20.00 |
| Continuum advisory | -34.00 |
| Motco | -37.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 30, 2025 | 34 | 17.24% | 884,330 | -47.66% | 18 | 1.52% | 21 | - | 7 | 75.00% |
| Mar 31, 2025 | 29 | -38.30% | 1,689,433 | -6.29% | 34 | 2.55% | 21 | -34.38% | 4 | - |
| Dec 31, 2024 | 1 | - | 56,000 | - | 1 | - | 1 | - | - | - |
| Jun 30, 2024 | 51 | -17.74% | 47,929,627 | -2.18% | 50 | 1.83% | 22 | - | 10 | -33.33% |
| Mar 31, 2024 | 62 | 5.08% | 48,998,824 | -4.02% | 52 | 1.76% | 22 | 15.79% | 15 | -16.67% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Neuberger Berman Intrinsic Value I | 371.91K | 7.76% | -1.00 |
| Vanguard US Total Market Shares ETF | 166.09K | 2.85% | - |
| Vanguard Total Stock Mkt Idx Inv | 162.54K | 2.34% | -3.55K |
| Neuberger Berman Small Cap Intrinsic Val | 108.60K | 2.27% | 1.00 |
| Pacific Ridge Capital Ptnrs Micro Cp Val | 1.17M | 1.22% | -67.04K |
| Vanguard Institutional Extnd Mkt Idx Tr | 73.12K | 1.05% | -13.76K |
| Herald Ord | 1.00M | 1.04% | - |
| Neuberger Berman US SCp Intrs Val $I Acc | 35.03K | 0.60% | - |
| Acuitas US Microcap Strategy | 307.60K | 0.32% | -1.79K |
| Morgan Stanley Pathway Sm-Mid Cap Eq | 15.33K | 0.32% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Oct 02, 2025 | Meyrath Hugues | President & CEO | Sell | $32.31K |
| Oct 02, 2025 | Nash Laura A. | Chief Accounting Officer | Sell | $6.64K |
| Oct 01, 2025 | Nash Laura A. | Chief Accounting Officer | Sell | $1.17K |
| Sep 12, 2025 | Nash Laura A. | Chief Accounting Officer | Sell | $2.10K |
| Apr 21, 2025 | Moorehead Lewis W. | Chief Accounting Officer | Sell | $1.73K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q4 | - | 3 |
| 2025 Q3 | - | 1 |
| 2025 Q2 | - | 5 |
| 2025 Q1 | - | 11 |
| 2024 Q4 | - | 11 |
QMCO Ownership FAQ
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