Quantum
QMCO
31.07
-2.40
-7.17%
Quantum
US · QMCO
#3054 by market cap
Listed 1970
31.07
-2.40
-7.17%
Live - 5344 symbols - heartbeat 244s ago
· 2026-10-08 08:38
Pre-market
30.00
-3.44%
After-hours
31.12
+0.16%
Overnight
30.70
-1.19%
- Market cap
- 1.22B
- P/E (TTM)i
- -2.36
- P/Bi
- -44.01
- EPSi
- -7.97
- Div yieldi
- 0.00%
- 52W posi
- 85%
Reader sentiment
Are you bullish or bearish on QMCO?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Distributing
- The number of reporting institutions decreased by 1 in the most recent period (2026/Q3).
- Total institutional ownership fell 0.8 percentage points.
Institutional ownership
- Held by institutions
- 36.33% -0.80pp
- Institutions
- 65 -1
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
DivergingInstitutions trimmed shares last reporting period, and the stock has seen net inflows in main-fund flow over the last 20 trading sessions - the two are pointing in different directions.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Hedge Fund20.66%
Mutual Fund9.52%
VC/PE Fund5.10%
Individual/Insider1.51%
Public Company0.81%
Private Company0.23%
Other62.16%
Top holders as of 2026-06-30
Alyeska Investment Group, L.P.
6.73% · 2.65M sh
Two Seas Capital LP
6.31% · 2.49M sh
Brookfield Corporation
5.10% · 2.01M sh
Ashford Capital Management Inc
2.64% · 1.04M sh
Portolan Capital Management, LLC
2.59% · 1.02M sh
Neuberger Berman Investment Advisers LLC
2.23% · 878.39K sh
Marshall Wace LLP
1.81% · 713.08K sh
Vanguard Capital Management, LLC
1.76% · 694.67K sh
Manatuck Hill Partners, LLC
0.89% · 350.00K sh
BlackRock
0.69% · 273.03K sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 25 buys · 22 sells
| Name | Role | Stake |
|---|---|---|
| Hugues Meyrath | Independent Director | 0.53% |
| James Lerner | Chairperson & CEO | 0.29% |
| Yue Zhou White | Independent Director | 0.10% |
| Donald Jaworski | Independent Director | 0.10% |
| Brian Cabrera | Senior VP, Chief Legal & Administrative Officer and Secretary | 0.07% |
| John Fichthorn | Former Lead Independent Director | 0.07% |
| John Tracy | Director | 0.07% |
| William White | Chief Financial Officer | 0.06% |
| Kenneth Gianella | Chief Financial Officer | 0.05% |
| Laura Nash | Chief Accounting Officer | 0.04% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-09-30 | Hugues Meyrath | Independent Director | Other Derivative Acquisition | +500,000 | $31.89 |
| 2026-09-30 | Anthony Craythorne | Chief Revenue Officer | Other Derivative Acquisition | +200,000 | $31.89 |
| 2026-08-02 | Anthony Craythorne | Chief Revenue Officer | Open Market Disposition | -1,478 | $10.73 |
| 2026-07-01 | Hugues Meyrath | Independent Director | Open Market Disposition | -6,232 | $10.51 |
| 2026-07-01 | Laura Nash | Chief Accounting Officer | Open Market Disposition | -260 | $10.51 |
| 2026-04-01 | Laura Nash | Chief Accounting Officer | Open Market Disposition | -109 | $5.44 |
| 2026-03-31 | Hugues Meyrath | Independent Director | Other Derivative Acquisition | +850,000 | $5.03 |
| 2026-03-31 | Anthony Craythorne | Chief Revenue Officer | Other Derivative Acquisition | +148,500 | $5.03 |
| 2026-03-31 | Laura Nash | Chief Accounting Officer | Other Derivative Acquisition | +49,500 | $5.03 |
| 2026-03-03 | William White | Chief Financial Officer | Other Acquisition | +25,000 | -- |
| 2025-12-31 | Donald Jaworski | Independent Director | Other Acquisition | +12,000 | -- |
| 2025-12-31 | John Fichthorn | Former Lead Independent Director | Other Acquisition | +12,000 | -- |
| 2025-12-31 | Hugues Meyrath | Independent Director | Other Acquisition | +62,500 | -- |
| 2025-12-31 | Hugues Meyrath | Independent Director | Other Derivative Acquisition | +50,000 | $6.45 |
| 2025-12-31 | Anthony Craythorne | Chief Revenue Officer | Other Acquisition | +15,000 | -- |
| 2025-12-31 | Tony Blevins | Director | Other Acquisition | +12,000 | -- |
| 2025-12-31 | Yue Zhou White | Independent Director | Other Acquisition | +12,000 | -- |
| 2025-12-31 | John Tracy | Director | Other Acquisition | +12,000 | -- |
| 2025-12-31 | James Clancy | Director | Other Acquisition | +12,000 | -- |
| 2025-10-31 | Hugues Meyrath | Independent Director | Other Acquisition | +37,500 | -- |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 08:38:46 · For reference only, not investment advice and not tailored to your situation.