Who owns MATRIX SERVICE CO?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of MTRX from SEC Form 13F filings across 149 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 149 institutions disclosed 24.9M shares of MATRIX SERVICE CO worth $340.9M — about 88% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
149
13F holders
$340.9M
value, 2026 filers
88%
of shares outstanding (24.9M sh)
22
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of MTRX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 2.1M | $29.3M | 0.0% | 7.6% | +6.2% |
| 2 | NEEDHAM INVESTMENT MANAGEMENT LLC | 1.4M | $19.7M | 0.6% | 5.1% | 0.0% |
| 3 | AMERICAN CENTURY COMPANIES INC | 1.2M | $16.5M | 0.0% | 4.3% | +22.9% |
| 4 | GENDELL JEFFREY L | 1.2M | $16.3M | 0.1% | 4.2% | -3.1% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | $16.3M | 0.0% | 4.2% | -0.7% |
| 6 | First Eagle Investment Management, LLC | 990,217 | $13.6M | 0.0% | 3.5% | +16.4% |
| 7 | ACADIAN ASSET MANAGEMENT LLC | 871,501 | $11.9M | 0.0% | 3.1% | +83.1% |
| 8 | Harvey Partners, LLC | 815,023 | $11.2M | 0.8% | 2.9% | -9.9% |
| 9 | TWO SIGMA INVESTMENTS, LP | 748,118 | $10.2M | 0.0% | 2.6% | +17.3% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 721,322 | $9.9M | 0.0% | 2.5% | +5.2% |
| 11 | Azarias Capital Management, L.P. | 673,692 | $9.2M | 4.0% | 2.4% | -17.5% |
| 12 | DIMENSIONAL FUND ADVISORS LP | 665,266 | $9.1M | 0.0% | 2.4% | +0.2% |
| 13 | WESTERLY CAPITAL MANAGEMENT, LLC | 595,930 | $8.2M | 1.5% | 2.1% | -38.2% |
| 14 | AQR CAPITAL MANAGEMENT LLC | 594,197 | $8.1M | 0.0% | 2.1% | +19.1% |
| 15 | STATE STREET CORP | 581,006 | $8.0M | 0.0% | 2.1% | +6.5% |
| 16 | FIRST WILSHIRE SECURITIES MANAGEMENT INC | 517,121 | $7.1M | 1.5% | 1.8% | -1.1% |
| 17 | JPMORGAN CHASE & CO | 460,466 | $6.3M | 0.0% | 1.6% | +67.3% |
| 18 | Bank of New York Mellon Corp | 457,365 | $6.3M | 0.0% | 1.6% | -2.0% |
| 19 | MORGAN STANLEY | 437,019 | $6.0M | 0.0% | 1.5% | +44.4% |
| 20 | CITADEL ADVISORS LLC | 426,023 | $5.8M | 0.0% | 1.5% | -9.7% |
| 21 | JACOBS LEVY EQUITY MANAGEMENT, INC | 325,825 | $4.5M | 0.0% | 1.2% | -7.2% |
| 22 | GOLDMAN SACHS GROUP INC | 315,376 | $4.3M | 0.0% | 1.1% | +15.8% |
| 23 | PANAGORA ASSET MANAGEMENT INC | 299,431 | $4.1M | 0.0% | 1.1% | +91.6% |
| 24 | Connor, Clark & Lunn Investment Management Ltd. | 295,422 | $4.0M | 0.0% | 1% | -18.6% |
| 25 | D. E. Shaw & Co., Inc. | 287,612 | $3.9M | 0.0% | 1% | +313.6% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.