MTRX · Matrix Service Co · Shareholders & Ownership

$10.04 -0.18 (-1.71%)

Russell 2000 member Rebalance outlook locked

Market Cap

$288.86M

28.29M

Volume · Oct 20 264.11K Avg daily vol (3M) 368.03K

Every disclosed holder of MTRX in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns MTRX

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	150	24,787,846	87.61%	Yes
Insiders (Forms 3, 4, 5)	14	1,468,020	5.19%	Yes
13D/G-only blocks	1	896,259	3.17%	Yes
Remaining	—	1,139,796	4.03%	Rest
Registered funds (N-PORT, not summed)	165	9,125,325	32.25%	No

Shares outstanding: 28,291,921, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of MTRX

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	2,139,456	7.56%	+125,239	Jun 30, 2026	carried, not yet filed for the newest quarter
1.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	705,963	2.50%	+54,108	Jun 30, 2026	iShares Trust, not summed
1.2	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	199,442	0.70%	+16,619	Jun 30, 2026	iShares Trust, not summed
1.3	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	91,709	0.32%	+23,439	Jun 30, 2026	iShares Trust, not summed
1.4	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	62,111	0.22%	+12,369	Jun 30, 2026	iShares Trust, not summed
1.5	iShares US Small Cap Value Factor ETF Fund S000069740 · Registered fund · Jun 30, 2026 iShares Trust, not summed	56,339	0.20%	+12,183	Jun 30, 2026	iShares Trust, not summed
2	NEEDHAM INVESTMENT MANAGEMENT LLC 13F CIK 1167212 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,435,000	5.07%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
2.1	Needham Aggressive Growth Fund Fund S000003815 · Registered fund · Jun 30, 2026 Needham Funds Inc, not summed	1,435,000	5.07%	0	Jun 30, 2026	Needham Funds Inc, not summed
3	AMERICAN CENTURY COMPANIES INC 13F CIK 748054 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,206,822	4.27%	+225,183	Jun 30, 2026	carried, not yet filed for the newest quarter
4	GENDELL JEFFREY L 13F CIK 1056581 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,192,529	4.22%	-38,778	Jun 30, 2026	carried, not yet filed for the newest quarter
5	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,188,393	4.20%	-8,394	Jun 30, 2026	carried, not yet filed for the newest quarter
6	First Eagle Investment Management, LLC 13F CIK 1325447 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	990,217	3.50%	+139,408	Jun 30, 2026	carried, not yet filed for the newest quarter
6.1	First Eagle Small Cap Opportunity Fund Fund S000072438 · Registered fund · Jul 31, 2026 First Eagle Funds, not summed	883,825	3.12%	+91,623	Jul 31, 2026	First Eagle Funds, not summed
7	Avantis U.S. Small Cap Value ETF Fund S000066459 · Registered fund · May 31, 2026 American Century ETF Trust, not summed	937,547	3.31%	+153,538	May 31, 2026	American Century ETF Trust, not summed
8	ROYCE & ASSOCIATES LP 13G CIK 906304 · Registered investment adviser · Dec 31, 2023	896,259	3.17%	—	Dec 31, 2023
9	ACADIAN ASSET MANAGEMENT LLC 13F CIK 916542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	871,501	3.08%	+395,412	Jun 30, 2026	carried, not yet filed for the newest quarter
10	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	839,781	2.97%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
11	Harvey Partners, LLC 13F CIK 1406484 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	815,023	2.88%	-89,977	Jun 30, 2026	carried, not yet filed for the newest quarter
12	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	748,118	2.64%	+110,427	Jun 30, 2026	carried, not yet filed for the newest quarter
13	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	721,322	2.55%	+35,949	Jun 30, 2026	carried, not yet filed for the newest quarter
14	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	665,266	2.35%	+1,327	Jun 30, 2026	carried, not yet filed for the newest quarter
14.1	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	120,001	0.42%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
14.2	U.S. MICRO CAP PORTFOLIO Fund S000000948 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	98,040	0.35%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
14.3	Dimensional U.S. Small Cap ETF Fund S000070906 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	92,488	0.33%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
14.4	Dimensional U.S. Core Equity 2 ETF Fund S000070903 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	77,570	0.27%	0	Jul 31, 2026	Dimensional ETF Trust, not summed
14.5	U.S. CORE EQUITY 2 PORTFOLIO Fund S000000980 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	51,137	0.18%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
15	WESTERLY CAPITAL MANAGEMENT, LLC 13F CIK 1546172 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	595,930	2.11%	-369,070	Jun 30, 2026	carried, not yet filed for the newest quarter
16	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	594,197	2.10%	+95,256	Jun 30, 2026	carried, not yet filed for the newest quarter
16.1	AQR Small Cap Multi-Style Fund Fund S000040064 · Registered fund · Jun 30, 2026 AQR Funds, not summed	16,906	0.06%	+11,072	Jun 30, 2026	AQR Funds, not summed
17	HEWITT JOHN R Insider CIK 1519321 · May 8, 2026 Director, President & CEO, issuer-wide	581,806	2.06%	-36,000	May 8, 2026	Director, President & CEO, issuer-wide
18	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	581,006	2.05%	+35,521	Jun 30, 2026	carried, not yet filed for the newest quarter
18.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	9,800	0.03%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
18.2	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	644	0.00%	0	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
18.3	State Street Balanced Index Fund Fund S000082802 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	231	0.00%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
19	FIRST WILSHIRE SECURITIES MANAGEMENT INC 13F CIK 732847 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	517,121	1.83%	-5,717	Jun 30, 2026	carried, not yet filed for the newest quarter
20	JPMORGAN CHASE & CO 13F CIK 19617 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	460,466	1.63%	+185,159	Jun 30, 2026	carried, not yet filed for the newest quarter
21	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	457,365	1.62%	-9,532	Jun 30, 2026	carried, not yet filed for the newest quarter
22	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	437,019	1.54%	+134,321	Jun 30, 2026	carried, not yet filed for the newest quarter
23	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	426,023	1.51%	-46,024	Jun 30, 2026	carried, not yet filed for the newest quarter
24	Azarias Capital Management, L.P. 13F CIK 1625279 · Investment adviser · Sep 30, 2026	425,763	1.50%	-247,929	Sep 30, 2026
25	JACOBS LEVY EQUITY MANAGEMENT, INC 13F CIK 884414 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	325,825	1.15%	-25,162	Jun 30, 2026	carried, not yet filed for the newest quarter
26	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	316,995	1.12%	-7,565	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
27	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	315,376	1.11%	+42,986	Jun 30, 2026	carried, not yet filed for the newest quarter
27.1	Goldman Sachs Small Cap Value Insights Fund Fund S000014929 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	80,122	0.28%	+9,686	Jul 31, 2026	Goldman Sachs Trust, not summed
27.2	Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF Fund S000048296 · Registered fund · May 31, 2026 Goldman Sachs ETF Trust, not summed	34,890	0.12%	-4,992	May 31, 2026	Goldman Sachs ETF Trust, not summed
27.3	Goldman Sachs Small Cap Equity Insights Fund Fund S000009329 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	30,695	0.11%	+7,900	Jul 31, 2026	Goldman Sachs Trust, not summed
27.4	Goldman Sachs Variable Insurance Trust Small Cap Equity Insights Fund Fund S000009355 · Registered fund · Jun 30, 2026 Goldman Sachs Variable Insurance Trust, not summed	9,144	0.03%	-446	Jun 30, 2026	Goldman Sachs Variable Insurance Trust, not summed
27.5	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	3,363	0.01%	+220	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
28	PANAGORA ASSET MANAGEMENT INC 13F CIK 883677 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	299,431	1.06%	+143,163	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Connor, Clark & Lunn Investment Management Ltd. 13F CIK 1596800 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	295,422	1.04%	-67,686	Jun 30, 2026	carried, not yet filed for the newest quarter
30	D. E. Shaw & Co., Inc. 13F CIK 1009207 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	287,612	1.02%	+218,071	Jun 30, 2026	carried, not yet filed for the newest quarter
31	Allspring Global Investments Holdings, LLC 13F CIK 1890906 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	283,513	1.00%	+201,594	Jun 30, 2026	carried, not yet filed for the newest quarter
31.1	Allspring Small Company Value Portfolio Fund S000007553 · Registered fund · Jul 31, 2026 ALLSPRING MASTER TRUST, not summed	199,097	0.70%	+93,425	Jul 31, 2026	ALLSPRING MASTER TRUST, not summed
31.2	Allspring Disciplined Small Cap Fund Fund S000007342 · Registered fund · Jun 30, 2026 ALLSPRING FUNDS TRUST, not summed	11,512	0.04%	+747	Jun 30, 2026	ALLSPRING FUNDS TRUST, not summed
32	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	282,559	1.00%	+26,759	Jun 30, 2026	carried, not yet filed for the newest quarter
33	BNP PARIBAS ARBITRAGE, SA 13F CIK 1166588 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	279,195	0.99%	+107,603	Jun 30, 2026	carried, not yet filed for the newest quarter
34	Russell Investments Group, Ltd. 13F CIK 1692234 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	266,486	0.94%	-90,299	Jun 30, 2026	carried, not yet filed for the newest quarter
34.1	U.S. Small Cap Equity Fund Fund S000001586 · Registered fund · Jul 31, 2026 RUSSELL INVESTMENT CO, not summed	92,970	0.33%	-12,066	Jul 31, 2026	RUSSELL INVESTMENT CO, not summed
34.2	U.S. Small Cap Equity Fund Fund S000006864 · Registered fund · Jun 30, 2026 RUSSELL INVESTMENT FUNDS, not summed	24,553	0.09%	-2,844	Jun 30, 2026	RUSSELL INVESTMENT FUNDS, not summed
34.3	Russell Investments U.S. Small Cap Equity ETF Fund S000089990 · Registered fund · Jun 30, 2026 Russell Investments Exchange Traded Funds, not summed	8,734	0.03%	+3,068	Jun 30, 2026	Russell Investments Exchange Traded Funds, not summed
35	De Lisle Partners LLP 13F CIK 2011184 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	258,790	0.91%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
36	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	254,670	0.90%	+14,118	Jun 30, 2026	carried, not yet filed for the newest quarter
36.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	14,173	0.05%	+1,888	Jun 30, 2026	Northern Funds, not summed
36.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	6,675	0.02%	-318	Jun 30, 2026	Northern Funds, not summed
37	ALGERT GLOBAL LLC 13F CIK 1275218 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	244,585	0.86%	+52,060	Jun 30, 2026	carried, not yet filed for the newest quarter
38	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	235,777	0.83%	+47,616	Jun 30, 2026	carried, not yet filed for the newest quarter
39	Qube Research & Technologies Ltd 13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	225,869	0.80%	+5,293	Jun 30, 2026	carried, not yet filed for the newest quarter
40	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	223,310	0.79%	-89,986	Jun 30, 2026	carried, not yet filed for the newest quarter
41	Man Group plc 13F CIK 1637460 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	194,010	0.69%	+155,189	Jun 30, 2026	carried, not yet filed for the newest quarter
42	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	189,639	0.67%	+8,301	Jun 30, 2026	carried, not yet filed for the newest quarter
43	GSA CAPITAL PARTNERS LLP 13F CIK 1362033 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	182,277	0.64%	-3,257	Jun 30, 2026	carried, not yet filed for the newest quarter
44	Y-Intercept (Hong Kong) Ltd 13F CIK 1772875 · Exempt reporting adviser · Sep 30, 2026	161,766	0.57%	+125,230	Sep 30, 2026
45	CenterBook Partners LP 13F CIK 1872738 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	154,058	0.54%	-277,367	Jun 30, 2026	carried, not yet filed for the newest quarter
46	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	139,040	0.49%	+4,318	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
47	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	135,823	0.48%	-340,588	Jun 30, 2026	carried, not yet filed for the newest quarter
48	NORGES BANK 13F CIK 1374170 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	126,500	0.45%	—	Jun 30, 2026	carried, not yet filed for the newest quarter
49	PAYNE SHAWN P Insider CIK 1945698 · Aug 30, 2026 President, Eng & Constr, issuer-wide	123,946	0.44%	-8,670	Aug 30, 2026	President, Eng & Constr, issuer-wide
50	Small Cap Portfolio Fund S000001917 · Registered fund · Jun 30, 2026 BNY MELLON VARIABLE INVESTMENT FUND, not summed	123,678	0.44%	-3,356	Jun 30, 2026	BNY MELLON VARIABLE INVESTMENT FUND, not summed

14 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 262 holders

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Key facts CIK 866273 CUSIP 576853105 13F (30d) 12 filings 12 filers Visit website Investor relations