Skip to main content
Equibles

MTRX

Matrix Service Co

Company with tickers: MTRX

CIK
866273
CUSIP
576853105
Shares Outstanding
28,133,850
13F Activity (30d)
101 filings 97 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 143
Total Value: $278,750,191
Total Shares: 24,281,384
Showing 1–100 of 144 holdings by value · page 1 of 2

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 143 13F filers · Δ vs Dec 31, 2025
Top Holder
8.3%
Jun 2023 → Mar 2026 · range 7.5% – 17.2%
−1.6 pts
Top 5
28.2%
Jun 2023 → Mar 2026 · range 28.2% – 42.2%
−13.9 pts
Top 10
45.6%
Jun 2023 → Mar 2026 · range 45.6% – 65.4%
−18.4 pts
HHI
305
Jun 2023 → Mar 2026 · range 305 – 571
Broadly held−202

Quarterly Activity

vs Dec 31, 2025
New
58
Increased
42
Decreased
30
Sold Out
17
Unchanged
13
Holder count: +41
Institutional value: +166.7%
Shares held: +171.8%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega TWO SIGMA INVESTMENTS, LP +436,981 637,691
Large MARSHALL WACE, LLP +281,824 313,296
Small Congruence Capital, LLC +210,949 304,145
Large ACADIAN ASSET MANAGEMENT LLC +178,300 476,089
Mega AMERICAN CENTURY COMPANIES INC +98,074 981,639

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP −261,793 143,817
Mid CenterBook Partners LP −202,621 431,425
Mid WINTON GROUP Ltd −42,882 43,029
Large LOS ANGELES CAPITAL MANAGEMENT LLC −39,984 11,516
Large Russell Investments Group, Ltd. −35,105 356,785

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega BlackRock, Inc. 2,014,217 $23,123,209
Mid NEEDHAM INVESTMENT MANAGEMENT LLC 1,435,000 $16,473,800
Mid GENDELL JEFFREY L 1,231,307 $14,135,403
Mega VANGUARD CAPITAL MANAGEMENT LLC 1,196,787 $13,739,114
Small WESTERLY CAPITAL MANAGEMENT, LLC 965,000 $11,078,200

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mid OBERWEIS ASSET MANAGEMENT INC/ 226,575 $2,650,927
Small Stanley-Laman Group, Ltd. 181,563 $2,124,287
Large TWO SIGMA ADVISERS, LP 88,800 $1,038,960
Large Trexquant Investment LP 41,395 $484,321
Micro PharVision Advisers, LLC 35,826 $419,164
Filter: New 58 Increased 42 Reduced 30 Sold out 17 Unchanged 13
Showing 100 of 144
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $23,123,209 8.30% 2,014,217
Mid NEEDHAM INVESTMENT MANAGEMENT LLC $16,473,800 5.91% 1,435,000
Mid GENDELL JEFFREY L $14,135,403 5.07% 1,231,307
Mega VANGUARD CAPITAL MANAGEMENT LLC $13,739,114 4.93% 1,196,787
Mega AMERICAN CENTURY COMPANIES INC $11,269,215 4.04% 981,639
Small WESTERLY CAPITAL MANAGEMENT, LLC $11,078,200 3.97% 965,000
Mid Harvey Partners, LLC $10,389,400 3.73% 905,000
Large First Eagle Investment Management, LLC $9,767,286 3.50% 850,809
Small Azarias Capital Management, L.P. $9,379,401 3.36% 817,021
Mega GEODE CAPITAL MANAGEMENT, LLC $7,868,081 2.82% 685,373
Mega DIMENSIONAL FUND ADVISORS LP $7,622,018 2.73% 663,939
Mega TWO SIGMA INVESTMENTS, LP $7,320,692 2.63% 637,691
Mega STATE STREET CORP $6,262,167 2.25% 545,485
Small FIRST WILSHIRE SECURITIES MANAGEMENT INC Broker-Dealer $6,002,180 2.15% 522,838
Mega AQR CAPITAL MANAGEMENT LLC $5,727,839 2.05% 498,941
Mega MILLENNIUM MANAGEMENT LLC $5,469,198 1.96% 476,411
Large ACADIAN ASSET MANAGEMENT LLC $5,465,501 1.96% 476,089
Mega CITADEL ADVISORS LLC $5,419,099 1.94% 472,047
Mega Bank of New York Mellon Corp Bank $5,359,974 1.92% 466,897
Mid CenterBook Partners LP $4,952,759 1.78% 431,425
Large Connor, Clark & Lunn Investment Management Ltd. $4,168,479 1.50% 363,108
Large Russell Investments Group, Ltd. $4,095,886 1.47% 356,785
Large JACOBS LEVY EQUITY MANAGEMENT, INC $4,029,330 1.45% 350,987
Large MARSHALL WACE, LLP $3,596,637 1.29% 313,296
Mega JANE STREET GROUP, LLC $3,595,248 1.29% 313,175
Small Congruence Capital, LLC $3,491,583 1.25% 304,145
Mega MORGAN STANLEY $3,474,969 1.25% 302,698
Mega JPMORGAN CHASE & CO $3,160,522 1.13% 275,307
Mega GOLDMAN SACHS GROUP INC $3,127,037 1.12% 272,390
Small De Lisle Partners LLP $2,970,909 1.07% 258,790
Large RENAISSANCE TECHNOLOGIES LLC $2,936,584 1.05% 255,800
Mega NORTHERN TRUST CORP Bank $2,761,535 0.99% 240,552
Large Qube Research & Technologies Ltd $2,532,212 0.91% 220,576
Mid ALGERT GLOBAL LLC $2,210,187 0.79% 192,525
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $2,160,088 0.77% 188,161
Mid GSA CAPITAL PARTNERS LLP $2,129,930 0.76% 185,534
Mega VANGUARD FIDUCIARY TRUST CO Bank $2,081,760 0.75% 181,338
Mega BNP PARIBAS ARBITRAGE, SA $1,969,876 0.71% 171,592
Mid COUNTRY TRUST BANK Bank $1,896,920 0.68% 165,237
Large PANAGORA ASSET MANAGEMENT INC $1,793,956 0.64% 156,268
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $1,651,019 0.59% 143,817
Small Prescott Group Capital Management, L.L.C. $1,416,540 0.51% 123,392
Mega VICTORY CAPITAL MANAGEMENT INC $1,388,517 0.50% 120,951
Mega ALLIANCEBERNSTEIN L.P. $1,305,735 0.47% 113,740
Small MONEY CONCEPTS CAPITAL CORP $1,196,778 0.43% 104,249
Mega ROYAL BANK OF CANADA Bank $1,156,001 0.41% 100,697
Large HRT FINANCIAL LP $1,105,707 0.40% 96,316
Mid CARY STREET PARTNERS FINANCIAL LLC $1,079,579 0.39% 94,040
Large Allspring Global Investments Holdings, LLC $940,429 0.34% 81,919
Mid Jump Financial, LLC $902,327 0.32% 78,600
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $812,646 0.29% 70,788
Mega D. E. Shaw & Co., Inc. $798,330 0.29% 69,541
Mid XTX Topco Ltd $793,784 0.28% 69,145
Mega AMERIPRISE FINANCIAL INC $771,111 0.28% 67,170
Large ExodusPoint Capital Management, LP $731,471 0.26% 63,717
Mega PRICE T ROWE ASSOCIATES INC /MD/ $725,432 0.26% 63,191
Mid MARTINGALE ASSET MANAGEMENT L P $660,157 0.24% 57,505
Small Pacific Ridge Capital Partners, LLC $624,534 0.22% 54,402
Large STRS OHIO $622,216 0.22% 54,200
Large Squarepoint Ops LLC $605,730 0.22% 52,764
Large Boston Partners $605,076 0.22% 52,707
Mega Invesco Ltd. $594,329 0.21% 51,771
Micro Financial Plan, Inc. $546,620 0.20% 47,615
Mid WINTON GROUP Ltd $493,972 0.18% 43,029
Mega BANK OF AMERICA CORP /DE/ Bank $484,720 0.17% 42,223
Mega Nuveen, LLC $476,603 0.17% 41,516
Small EntryPoint Capital, LLC $445,665 0.16% 38,821
Large Man Group plc $445,665 0.16% 38,821
Large VOYA INVESTMENT MANAGEMENT LLC $444,540 0.16% 38,723
Large PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO Pension $414,531 0.15% 36,109
Mid Quantbot Technologies LP $412,878 0.15% 35,965
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $390,320 0.14% 34,000
Mega RHUMBLINE ADVISERS $385,819 0.14% 33,608
Small Dynamic Technology Lab Private Ltd $385,750 0.14% 33,602
Small Bridge City Capital, LLC $355,880 0.13% 31,000
Mid Brevan Howard Capital Management LP $345,226 0.12% 30,072
Mega UBS Group AG $337,764 0.12% 29,422
Mega WELLS FARGO & COMPANY/MN $312,507 0.11% 27,222
Large Assenagon Asset Management S.A. $305,574 0.11% 26,618
Mega BARCLAYS PLC $300,935 0.11% 26,214
Mid SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC $293,784 0.11% 25,591
Mid BAILARD, INC. $283,556 0.10% 24,700
Mega DEUTSCHE BANK AG\ Bank $280,226 0.10% 24,410
Large Walleye Capital LLC $276,943 0.10% 24,124
Mid Aquatic Capital Management LLC $264,315 0.09% 23,024
Large Point72 Asset Management, L.P. $255,567 0.09% 22,262
Small VERUS CAPITAL PARTNERS, LLC $239,932 0.09% 20,900
Mid Quadrature Capital Ltd $237,980 0.09% 20,730
Large OSAIC HOLDINGS, INC. $235,741 0.08% 20,535
Large Creative Planning $233,170 0.08% 20,311
Large IEQ CAPITAL, LLC $223,561 0.08% 19,474
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $207,259 0.07% 18,054
Mid SATURNA CAPITAL CORP $202,116 0.07% 17,606
Mid OCCUDO QUANTITATIVE STRATEGIES LP $186,251 0.07% 16,224
Mega CITIGROUP INC $184,299 0.07% 16,054
Small KETTLE HILL CAPITAL MANAGEMENT, LLC $172,257 0.06% 15,005
Small Greenhaven Road Investment Management, L.P. $160,364 0.06% 13,969
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $148,034 0.05% 12,895
Small AXQ CAPITAL, LP $141,938 0.05% 12,364
Mega Vanguard Global Advisers, LLC $133,397 0.05% 11,620

Report a Problem

Category
Description
Email (optional, for follow-up)