MATRIX SERVICE CO (MTRX) Institutional Shareholders
MATRIX SERVICE CO (MTRX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $339.38M in MTRX holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of MTRX tracked by InsiderSet, reporting ownership valued at approximately $29.31M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $21.18M, representing an estimated loss of -27.74% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 46% of the total disclosed MTRX value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Needham Investment Management Llc, American Century Companies Inc, and several other long-term asset managers with concentrated positions in MATRIX SERVICE CO (MTRX).
This page ranks the largest institutional MTRX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
148
Total Reported Value
$339.38M
Largest Holder
Blackrock, Inc.
Largest Position
$29.31M
Insider Transactions (90d)
36
Latest Filing Quarter
Q2 2026
New Institutional Positions
88
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 2,139,456 | $29,310,548 | $21,180,614 | -$8,129,934 | -27.74% | |
| Needham Investment Management Llc | 0.59% | 1,435,000 | $19,659,500 | $14,206,500 | -$5,453,000 | -27.74% | |
| American Century Companies Inc | 0.01% | 1,206,822 | $16,533,462 | $11,947,538 | -$4,585,924 | -27.74% | |
| Gendell Jeffrey L | 0.15% | 1,192,529 | $16,337,647 | $11,806,037 | -$4,531,610 | -27.74% | |
| Vanguard Capital Management Llc | 0.00% | 1,188,393 | $16,280,984 | $11,765,091 | -$4,515,893 | -27.74% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 990,217 | $13,565,973 | $9,803,148 | -$3,762,825 | -27.74% |
| Acadian Asset Management Llc | 0.01% | 871,501 | $11,929,000 | $8,627,860 | -$3,301,140 | -27.67% | |
| Harvey Partners, Llc | 0.77% | 815,023 | $11,165,815 | $8,068,728 | -$3,097,087 | -27.74% | |
| Two Sigma Investments, Lp | 0.01% | 748,118 | $10,249,217 | $7,406,368 | -$2,842,849 | -27.74% | |
| Geode Capital Management, Llc | 0.00% | 721,322 | $9,885,182 | $7,141,088 | -$2,744,094 | -27.76% | |
| Azarias Capital Management, L.P. | 4.02% | 673,692 | $9,229,580 | $6,669,551 | -$2,560,029 | -27.74% | |
| Dimensional Fund Advisors Lp | 0.00% | 665,266 | $9,114,226 | $6,586,133 | -$2,528,093 | -27.74% | |
| Westerly Capital Management, Llc | 1.51% | 595,930 | $8,164,241 | $5,899,707 | -$2,264,534 | -27.74% | |
| Aqr Capital Management Llc | 0.00% | 594,197 | $8,140,501 | $5,882,550 | -$2,257,951 | -27.74% | |
| State Street Corp | 0.00% | 581,006 | $7,959,782 | $5,751,959 | -$2,207,823 | -27.74% | |
| First Wilshire Securities Management Inc | 1.46% | 517,121 | $7,084,558 | $5,119,498 | -$1,965,060 | -27.74% | |
| Jpmorgan Chase & Co | 0.00% | 460,466 | $6,312,989 | $4,558,613 | -$1,754,376 | -27.79% | |
| Bank Of New York Mellon Corp | 0.00% | 457,365 | $6,265,895 | $4,527,914 | -$1,737,982 | -27.74% | |
| Morgan Stanley | 0.00% | 437,019 | $5,987,165 | $4,326,488 | -$1,660,677 | -27.74% | |
| Citadel Advisors Llc | 0.00% | 426,023 | $5,836,515 | $4,217,628 | -$1,618,887 | -27.74% | |
| Jacobs Levy Equity Management, Inc | 0.02% | 325,825 | $4,463,802 | $3,225,668 | -$1,238,135 | -27.74% | |
| Goldman Sachs Group Inc | 0.00% | 315,376 | $4,320,651 | $3,122,222 | -$1,198,429 | -27.74% | |
| Panagora Asset Management Inc | 0.01% | 299,431 | $4,102,205 | $2,964,367 | -$1,137,838 | -27.74% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | 295,422 | $4,047,281 | $2,924,678 | -$1,122,603 | -27.74% | |
| D. E. Shaw & Co., Inc. | 0.00% | 287,612 | $3,940,284 | $2,847,359 | -$1,092,925 | -27.74% | |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 282,559 | $3,871,058 | $2,797,334 | -$1,073,724 | -27.74% |
| Bnp Paribas Financial Markets | 0.00% | 279,195 | $3,824,972 | $2,764,031 | -$1,060,942 | -27.74% | |
| Allspring Global Investments Holdings, Llc | 0.01% | 283,513 | $3,784,899 | $2,806,779 | -$978,120 | -25.84% | |
| Russell Investments Group, Ltd. | 0.00% | 266,486 | $3,650,865 | $2,638,211 | -$1,012,654 | -27.74% | |
| De Lisle Partners Llp | 0.39% | 258,790 | $3,544,129 | $2,562,021 | -$982,108 | -27.71% | |
| Northern Trust Corp | 0.00% | 254,670 | $3,488,979 | $2,521,233 | -$967,746 | -27.74% | |
| Algert Global Llc | 0.04% | 244,585 | $3,350,814 | $2,421,392 | -$929,423 | -27.74% | |
| Vanguard Portfolio Management Llc | 0.00% | 235,777 | $3,230,145 | $2,334,192 | -$895,953 | -27.74% | |
| Qube Research & Technologies Ltd | 0.00% | 225,869 | $3,094,405 | $2,236,103 | -$858,302 | -27.74% | |
| Marshall Wace, Llp | 0.00% | 223,310 | $3,059,348 | $2,210,769 | -$848,579 | -27.74% | |
| Man Group Plc | 0.00% | 194,010 | $2,657,937 | $1,920,699 | -$737,238 | -27.74% | |
| Vanguard Fiduciary Trust Co | 0.00% | 189,639 | $2,598,054 | $1,877,426 | -$720,628 | -27.74% | |
| Gsa Capital Partners Llp | 0.16% | 182,277 | $2,497,000 | $1,804,542 | -$692,458 | -27.73% | |
| Centerbook Partners Lp | 0.10% | 154,058 | $2,110,595 | $1,525,174 | -$585,421 | -27.74% | |
| Millennium Management Llc | 0.00% | 135,823 | $1,860,775 | $1,344,648 | -$516,127 | -27.74% | |
| Norges Bank | 0.00% | 126,500 | $1,733,050 | $1,252,350 | -$480,700 | -27.74% | |
| Trexquant Investment Lp | 0.01% | 122,418 | $1,677,127 | $1,211,938 | -$465,189 | -27.74% | |
| Royal Bank Of Canada | 0.00% | 118,126 | $1,619,000 | $1,169,447 | -$449,553 | -27.77% | |
| Prescott Group Capital Management, L.L.C. | 0.14% | 114,392 | $1,567,170 | $1,132,481 | -$434,689 | -27.74% | |
| Jane Street Group, Llc | 0.00% | 106,381 | $1,457,420 | $1,053,172 | -$404,248 | -27.74% | |
| Alliancebernstein L.P. | 0.00% | 116,280 | $1,334,894 | $1,151,172 | -$183,722 | -13.76% | |
| Cary Street Partners Financial Llc | 0.03% | 96,510 | $1,322,187 | $955,449 | -$366,738 | -27.74% | |
| Walleye Capital Llc | 0.01% | 96,242 | $1,318,515 | $952,796 | -$365,719 | -27.74% | |
| Charles Schwab Investment Management Inc | 0.00% | 87,394 | $1,197,298 | $865,201 | -$332,097 | -27.74% | |
| Price T Rowe Associates Inc | 0.00% | 75,461 | $1,034,000 | $747,064 | -$286,936 | -27.75% |
Frequently asked questions about MTRX
Who owns the most MTRX stock?
The largest holders of MTRX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MATRIX SERVICE CO (MTRX).
Is MTRX widely held by superinvestors?
Many widely followed stocks like MTRX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MTRX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.