Matrix Service Co (MTRX)
Who owns Matrix Service Co (MTRX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 95.7% of the shares are freely tradable; institutional investors hold 87.2%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 7.16 | 2,014,217 | -45.4 | 03/31/2026 |
| Vanguard Group Inc | 5.43 | 1,526,777 | +0.3 | 12/31/2025 |
| Needham Investment Management, LLC | 5.10 | 1,435,000 | +0.0 | 03/31/2026 |
| Gendell Jeffrey L | 4.38 | 1,231,307 | +16.4 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.25 | 1,196,787 | +0.0 | 03/31/2026 |
| American Century Companies Inc | 3.49 | 981,639 | +11.1 | 03/31/2026 |
| Westerly Capital Management LLC | 3.43 | 965,000 | -2.3 | 03/31/2026 |
| Harvey Partners LLC | 3.22 | 905,000 | +6.1 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Needham Aggressive Growth Retail | 5.10 | 1,435,000 | +0.0 | 03/31/2026 |
| Avantis US Small Cap Value ETF | 3.33 | 937,547 | +0.2 | 05/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.