Matrix Service Co (MTRX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

28,327,941Shares Outstanding

1,794,514Shares held by institutions

$20,295,953Value of institutional holdings

86.19%Institutional ownership %

7.62%Shares Changed QoQ

138No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Matrix Service Co (NASDAQ:MTRX) currently has 138 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

Matrix Service saw its institutional ownership percentage rose to 86.2% in December 2025 from 84.7% in September 2025.
On a quarter-over-quarter basis, institutional holdings shifted by 7.62%, with a year-over-year an increase of 12.20% in the count of filers.
A review of institutional activity for Matrix Service shows 77 of 138 filers increasing their positions, while 45 reduced their stake, and 16 remained unchanged.
Collectively, institutional investors increased their stake in Matrix Service to 24.42Mn shares as of December 2025, a change that is up by 1.73Mn shares quarter on quarter and up 1.67Mn shares year over year.
With 3.69Mn shares, BlackRock, Inc. commands the largest institutional position in Matrix Service as of December 31, 2025, equating to 13.01% of the company.
Among the most significant buyers of Matrix Service during December 2025 were BlackRock, Inc. (382.27K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (228.29K), CenterBook Partners LP (226.32K), GSA CAPITAL PARTNERS LLP (175.79K), CITADEL ADVISORS LLC (175.37K).
Leading sellers of Matrix Service stock in December 2025 included ROYCE & ASSOCIATES LP (430.00K), MILLENNIUM MANAGEMENT LLC (143.73K), DIMENSIONAL FUND ADVISORS LP (141.97K), WESTERLY CAPITAL MANAGEMENT, LLC (112.00K), Trexquant Investment LP (92.71K).
The top 10 institutional holders of Matrix Service for the quarter ending December 2025 included BlackRock, Inc. (3.69Mn), VANGUARD GROUP INC (1.53Mn), NEEDHAM INVESTMENT MANAGEMENT LLC (1.44Mn), GENDELL JEFFREY L (1.06Mn), WESTERLY CAPITAL MANAGEMENT, LLC (988.00K), AMERICAN CENTURY COMPANIES INC (883.57K), Harvey Partners, LLC (852.68K), Azarias Capital Management, L.P. (730.77K), DIMENSIONAL FUND ADVISORS LP (668.74K), GEODE CAPITAL MANAGEMENT, LLC (667.97K).

138 Institutional Holders

1,794,514 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	3,686,785	382,274	11.57%	$43,135,385.00
VANGUARD GROUP INC	31 Dec, 2025	1,526,777	3,834	0.25%	$17,863,291.00
NEEDHAM INVESTMENT MANAGEMENT LLC	31 Dec, 2025	1,435,000	0	0.00%	$16,789,500.00
GENDELL JEFFREY L	31 Dec, 2025	1,057,561	111,087	11.74%	$12,373,464.00
WESTERLY CAPITAL MANAGEMENT, LLC	31 Dec, 2025	988,000	-112,000	-10.18%	$11,559,600.00
AMERICAN CENTURY COMPANIES INC	31 Dec, 2025	883,565	94,644	12.00%	$10,337,711.00
Harvey Partners, LLC	31 Dec, 2025	852,678	297	0.03%	$9,976,333.00
Azarias Capital Management, L.P.	31 Dec, 2025	730,767	95,924	15.11%	$8,549,974.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	668,738	-141,975	-17.51%	$7,824,453.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	667,970	23,358	3.62%	$7,816,887.00
First Eagle Investment Management, LLC	31 Dec, 2025	640,083	58,209	10.00%	$7,488,971.00
CenterBook Partners LP	31 Dec, 2025	634,046	226,325	55.51%	$7,418,338.00
FIRST WILSHIRE SECURITIES MANAGEMENT INC	31 Dec, 2025	613,017	-79,860	-11.53%	$7,172,299.00
STATE STREET CORP	31 Dec, 2025	533,485	2,517	0.47%	$6,241,775.00
Bank of New York Mellon Corp	31 Dec, 2025	493,629	-35,230	-6.66%	$5,775,460.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	486,668	-143,728	-22.80%	$5,694,016.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	405,610	228,289	128.74%	$4,745,637.00
Russell Investments Group, Ltd.	31 Dec, 2025	391,890	64,157	19.58%	$4,585,109.00
Connor, Clark & Lunn Investment Management Ltd.	31 Dec, 2025	386,637	44,968	13.16%	$4,523,653.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	365,238	58,538	19.09%	$4,273,285.00

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