Institutional Ownership
Matrix Svc Co
CUSIP 576853105COMMTRXQ1 2026
13D / 13G Filings
32
Schedule 13D/13G on record
Beneficial Filers
12
Distinct reporting persons
Largest Stake
17.0%
Max % of class reported
Institutional Holders
138
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
32 filings · latest Jan 21, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Jan 21, 2026 | Blackrock, Inc. | 13G/A | 12.4% | 3.49M | SEC |
| 2 | Aug 14, 2025 | Harvey Partners, LLC | 13G/A | 4.4% | 1.22M | SEC |
| 3 | Apr 17, 2025 | Blackrock, Inc. | 13G/A | 10.6% | 2.93M | SEC |
| 4 | Apr 9, 2025 | Azarias Capital Management, L.P. | 13G/A | 4.4% | 1.22M | SEC |
| 5 | Apr 3, 2025 | Azarias Capital Management, L.P. | 13G/A | 5.2% | 1.44M | SEC |
| 6 | Feb 13, 2025 | Needham Investment Management LLC | 13G | 5.2% | 1.42M | SEC |
| 7 | Feb 13, 2025 | First Wilshire Securities Management, Inc. | 13G/A | 4.9% | 1.35M | SEC |
| 8 | Nov 12, 2024 | Vanguard Group Inc | 13G/A | 5.1% | 1.40M | SEC |
| 9 | Nov 4, 2024 | Vanguard Group Inc | 13G/A | 5.1% | 1.40M | SEC |
| 10 | Nov 1, 2024 | Azarias Capital Management, L.P. | 13G | 5.1% | 27.55M | SEC |
22 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Matrix Svc Co.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 2.01M | $23.12M |
| 2 | Needham Investment Management LLC | 1.44M | $16.47M |
| 3 | Gendell Jeffrey L | 1.23M | $14.14M |
| 4 | American Century Companies Inc | 981.6K | $11.27M |
| 5 | Westerly Capital Management, LLC | 965.0K | $11.08M |
| 6 | Harvey Partners, LLC | 905.0K | $10.39M |
| 7 | First Eagle Investment Management, LLC | 850.8K | $9.77M |
| 8 | Azarias Capital Management, L.P. | 817.0K | $9.38M |
| 9 | Geode Capital Management, LLC | 685.4K | $7.87M |
| 10 | Dimensional Fund Advisors LP | 663.9K | $7.62M |