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 $263.32M 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 $23.12M in its March 31, 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 $23.36M, representing an estimated gain of +1.05% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 48% of the total disclosed MTRX value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Needham Investment Management Llc, Gendell Jeffrey L, 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
143
Total Reported Value
$263.32M
Largest Holder
Blackrock, Inc.
Largest Position
$23.12M
Insider Transactions (90d)
6
Latest Filing Quarter
Q2 2026
New Institutional Positions
162
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% | 2,014,217 | $23,123,210 | $23,364,917 | +$241,707 | +1.05% | |
| Needham Investment Management Llc | 0.84% | 1,435,000 | $16,473,800 | $16,646,000 | +$172,200 | +1.05% | |
| Gendell Jeffrey L | 0.19% | 1,231,307 | $14,135,405 | $14,283,161 | +$147,756 | +1.05% | |
| Vanguard Capital Management Llc | 0.00% | 1,196,787 | $13,739,115 | $13,882,729 | +$143,614 | +1.05% | |
| American Century Companies Inc | 0.01% | 981,639 | $11,269,216 | $11,387,012 | +$117,796 | +1.05% | |
| Westerly Capital Management, Llc | 3.41% | 965,000 | $11,078,200 | $11,194,000 | +$115,800 | +1.05% | |
| Harvey Partners, Llc | 0.84% | 905,000 | $10,389,400 | $10,498,000 | +$108,600 | +1.05% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.01% | 850,809 | $9,767,287 | $9,869,384 | +$102,097 | +1.05% |
| Azarias Capital Management, L.P. | 4.02% | 673,692 | $9,229,580 | $7,814,827 | -$1,414,753 | -15.33% | |
| Geode Capital Management, Llc | 0.00% | 685,373 | $7,870,488 | $7,950,327 | +$79,839 | +1.01% | |
| Dimensional Fund Advisors Lp | 0.00% | 663,939 | $7,621,483 | $7,701,692 | +$80,209 | +1.05% | |
| Two Sigma Investments, Lp | 0.01% | 637,691 | $7,320,693 | $7,397,216 | +$76,523 | +1.05% | |
| State Street Corp | 0.00% | 545,485 | $6,262,168 | $6,327,626 | +$65,458 | +1.05% | |
| First Wilshire Securities Management Inc | 1.35% | 522,838 | $6,002,180 | $6,064,921 | +$62,741 | +1.05% | |
| Aqr Capital Management Llc | 0.00% | 498,941 | $5,727,842 | $5,787,716 | +$59,874 | +1.05% | |
| Millennium Management Llc | 0.00% | 476,411 | $5,469,198 | $5,526,368 | +$57,170 | +1.05% | |
| Citadel Advisors Llc | 0.00% | 472,047 | $5,419,099 | $5,475,745 | +$56,646 | +1.05% | |
| Bank Of New York Mellon Corp | 0.00% | 466,897 | $5,359,971 | $5,416,005 | +$56,034 | +1.05% | |
| Centerbook Partners Lp | 0.27% | 431,425 | $4,952,759 | $5,004,530 | +$51,771 | +1.05% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | 363,108 | $4,168,480 | $4,212,053 | +$43,573 | +1.05% | |
| Russell Investments Group, Ltd. | 0.00% | 356,785 | $4,095,892 | $4,138,706 | +$42,814 | +1.05% | |
| Jacobs Levy Equity Management, Inc | 0.02% | 350,987 | $4,029,331 | $4,071,449 | +$42,118 | +1.05% | |
| Marshall Wace, Llp | 0.00% | 313,296 | $3,596,638 | $3,634,234 | +$37,596 | +1.05% | |
| Jane Street Group, Llc | 0.00% | 313,175 | $3,595,249 | $3,632,830 | +$37,581 | +1.05% | |
| Congruence Capital, Llc | 1.17% | 304,145 | $3,491,585 | $3,528,082 | +$36,497 | +1.05% | |
| Morgan Stanley | 0.00% | 302,698 | $3,474,975 | $3,511,297 | +$36,322 | +1.05% | |
| Goldman Sachs Group Inc | 0.00% | 272,390 | $3,127,037 | $3,159,724 | +$32,687 | +1.05% | |
| De Lisle Partners Llp | 0.35% | 258,790 | $2,967,027 | $3,001,964 | +$34,937 | +1.18% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 255,800 | $2,936,584 | $2,967,280 | +$30,696 | +1.05% |
| Northern Trust Corp | 0.00% | 240,552 | $2,761,537 | $2,790,403 | +$28,866 | +1.05% | |
| Qube Research & Technologies Ltd | 0.00% | 220,576 | $2,532,212 | $2,558,682 | +$26,470 | +1.05% | |
| Vanguard Portfolio Management Llc | 0.00% | 188,161 | $2,160,088 | $2,182,668 | +$22,580 | +1.05% | |
| Vanguard Fiduciary Trust Co | 0.00% | 181,338 | $2,081,760 | $2,103,521 | +$21,761 | +1.05% | |
| Bnp Paribas Financial Markets | 0.00% | 171,592 | $1,969,876 | $1,990,467 | +$20,591 | +1.05% | |
| Panagora Asset Management Inc | 0.01% | 156,268 | $1,793,957 | $1,812,709 | +$18,752 | +1.05% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 143,817 | $1,651,019 | $1,668,277 | +$17,258 | +1.05% | |
| Prescott Group Capital Management, L.L.C. | 0.14% | 123,392 | $1,416,540 | $1,431,347 | +$14,807 | +1.05% | |
| Victory Capital Management Inc | 0.00% | 120,951 | $1,388,517 | $1,403,032 | +$14,515 | +1.05% | |
| Alliancebernstein L.P. | 0.00% | 113,740 | $1,330,758 | $1,319,384 | -$11,374 | -0.85% | |
| Cary Street Partners Financial Llc | 0.03% | 96,510 | $1,322,187 | $1,119,516 | -$202,671 | -15.33% | |
| Money Concepts Capital Corp | 0.07% | 104,249 | $1,196,779 | $1,209,288 | +$12,509 | +1.05% | |
| Royal Bank Of Canada | 0.00% | 100,697 | $1,156,000 | $1,168,085 | +$12,085 | +1.05% | |
| Allspring Global Investments Holdings, Llc | 0.00% | 81,919 | $963,367 | $950,260 | -$13,107 | -1.36% | |
| Jump Financial, Llc | 0.01% | 78,600 | $902,328 | $911,760 | +$9,432 | +1.05% | |
| Charles Schwab Investment Management Inc | 0.00% | 70,788 | $812,646 | $821,141 | +$8,495 | +1.05% | |
| D. E. Shaw & Co., Inc. | 0.00% | 69,541 | $798,331 | $806,676 | +$8,345 | +1.05% | |
| Xtx Topco Ltd | 0.01% | 69,145 | $793,785 | $802,082 | +$8,297 | +1.05% | |
| Ameriprise Financial Inc | 0.00% | 67,170 | $771,112 | $779,172 | +$8,060 | +1.05% | |
| Exoduspoint Capital Management, Lp | 0.01% | 63,717 | $731,471 | $739,117 | +$7,646 | +1.05% | |
| Martingale Asset Management L P | 0.02% | 57,505 | $660,158 | $667,058 | +$6,900 | +1.05% |
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.