MTRX US Equity

MATRIX SERVICE CO

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Industrials · Construction - Special Trade Contractors · CIK 866273 · FYE 0630

$11.10

-0.43 (-3.73%)

USD · as of 2026-07-29 · marketstack

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Institutional ownership· 13F filers holding MTRX · 2026-Q1 methodology → sources →

143 holders

% of shares outstanding held

86.3%

Shares held (13F)

24,270,484

Reporting holders

143

Top holders

largest 100 of 143 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	2,014,2172.0M	$23M	7.16%	TRIM -45%
2	NEEDHAM INVESTMENT MANAGEMENT LLC	1,435,0001.4M	$16M	5.10%	—
3	GENDELL JEFFREY L	1,231,3071.2M	$14M	4.38%	ADD 16%
4	VANGUARD CAPITAL MANAGEMENT LLC	1,196,7871.2M	$14M	4.25%	NEW†
5	AMERICAN CENTURY COMPANIES INC	981,639981,639	$11M	3.49%	ADD 11%
6	WESTERLY CAPITAL MANAGEMENT, LLC	965,000965,000	$11M	3.43%	TRIM -2%
7	Harvey Partners, LLC	905,000905,000	$10M	3.22%	ADD 6%
8	First Eagle Investment Management, LLC	850,809850,809	$10M	3.02%	ADD 33%
9	Azarias Capital Management, L.P.	817,021817,021	$9M	2.90%	ADD 12%
10	GEODE CAPITAL MANAGEMENT, LLC	685,373685,373	$8M	2.44%	ADD 3%
11	DIMENSIONAL FUND ADVISORS LP	663,939663,939	$8M	2.36%	—
12	TWO SIGMA INVESTMENTS, LP	637,691637,691	$7M	2.27%	ADD 218%
13	STATE STREET CORP	545,485545,485	$6M	1.94%	ADD 2%
14	FIRST WILSHIRE SECURITIES MANAGEMENT INC	522,838522,838	$6M	1.86%	TRIM -15%
15	AQR CAPITAL MANAGEMENT LLC	498,941498,941	$6M	1.77%	ADD 37%
16	MILLENNIUM MANAGEMENT LLC	476,411476,411	$5M	1.69%	TRIM -2%
17	ACADIAN ASSET MANAGEMENT LLC	476,089476,089	$5M	1.69%	ADD 60%
18	CITADEL ADVISORS LLC	472,047472,047	$5M	1.68%	ADD 107%
19	Bank of New York Mellon Corp	466,897466,897	$5M	1.66%	TRIM -5%
20	CenterBook Partners LP	431,425431,425	$5M	1.53%	TRIM -32%
21	Connor, Clark & Lunn Investment Management Ltd.	363,108363,108	$4M	1.29%	TRIM -6%
22	Russell Investments Group, Ltd.	356,785356,785	$4M	1.27%	TRIM -9%
23	JACOBS LEVY EQUITY MANAGEMENT, INC	350,987350,987	$4M	1.25%	ADD 8%
24	MARSHALL WACE, LLP	313,296313,296	$4M	1.11%	ADD 895%
25	JANE STREET GROUP, LLC	313,175313,175	$4M	1.11%	ADD 186%
26	Congruence Capital, LLC	304,145304,145	$3M	1.08%	ADD 226%
27	MORGAN STANLEY	302,698302,698	$3M	1.08%	ADD 4%
28	GOLDMAN SACHS GROUP INC	272,390272,390	$3M	0.97%	TRIM -5%
29	JPMORGAN CHASE & CO	275,307275,307	$3M	0.98%	ADD 6%
30	De Lisle Partners LLP	258,790258,790	$3M	0.92%	—
31	RENAISSANCE TECHNOLOGIES LLC	255,800255,800	$3M	0.91%	ADD 2%
32	NORTHERN TRUST CORP	240,552240,552	$3M	0.86%	ADD 6%
33	Qube Research & Technologies Ltd	220,576220,576	$3M	0.78%	TRIM -2%
34	ALGERT GLOBAL LLC	192,525192,525	$2M	0.68%	ADD 5%
35	VANGUARD PORTFOLIO MANAGEMENT LLC	188,161188,161	$2M	0.67%	NEW
36	GSA CAPITAL PARTNERS LLP	185,534185,534	$2M	0.66%	TRIM -13%
37	VANGUARD FIDUCIARY TRUST CO	181,338181,338	$2M	0.64%	NEW
38	BNP PARIBAS FINANCIAL MARKETS	171,592171,592	$2M	0.61%	ADD 67%
39	COUNTRY TRUST BANK	165,237165,237	$2M	0.59%	ADD 25%
40	PANAGORA ASSET MANAGEMENT INC	156,268156,268	$2M	0.56%	ADD 7%
41	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	143,817143,817	$2M	0.51%	TRIM -65%
42	Prescott Group Capital Management, L.L.C.	123,392123,392	$1M	0.44%	ADD 36%
43	VICTORY CAPITAL MANAGEMENT INC	120,951120,951	$1M	0.43%	ADD 10%
44	ALLIANCEBERNSTEIN L.P.	113,740113,740	$1M	0.40%	TRIM -4%
45	MONEY CONCEPTS CAPITAL CORP	104,249104,249	$1M	0.37%	—
46	ROYAL BANK OF CANADA	100,697100,697	$1M	0.36%	ADD 249%
47	HRT FINANCIAL LP	96,31696,316	$1M	0.34%	NEW
48	CARY STREET PARTNERS FINANCIAL LLC	94,04094,040	$1M	0.33%	ADD 27%
49	Allspring Global Investments Holdings, LLC	81,91981,919	$963,367	0.29%	ADD 428%
50	Jump Financial, LLC	78,60078,600	$902,328	0.28%	ADD 43%
51	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	70,78870,788	$812,646	0.25%	TRIM -10%
52	D. E. Shaw & Co., Inc.	69,54169,541	$798,331	0.25%	TRIM -31%
53	XTX Topco Ltd	69,14569,145	$793,785	0.25%	ADD 42%
54	AMERIPRISE FINANCIAL INC	67,17067,170	$771,112	0.24%	TRIM -10%
55	ExodusPoint Capital Management, LP	63,71763,717	$731,471	0.23%	ADD 136%
56	PRICE T ROWE ASSOCIATES INC /MD/	63,19163,191	$726,000	0.22%	ADD 19%
57	MARTINGALE ASSET MANAGEMENT L P	57,50557,505	$660,158	0.20%	TRIM -30%
58	Pacific Ridge Capital Partners, LLC	54,40254,402	$624,535	0.19%	ADD 46%
59	STRS OHIO	54,20054,200	$622,216	0.19%	ADD 15%
60	Squarepoint Ops LLC	52,76452,764	$605,731	0.19%	ADD 356%
61	Boston Partners	52,70752,707	$605,080	0.19%	—
62	Invesco Ltd.	51,77151,771	$594,332	0.18%	—
63	Financial Plan, Inc.	47,61547,615	$546,620	0.17%	—
64	WINTON GROUP Ltd	43,02943,029	$493,973	0.15%	TRIM -50%
65	BANK OF AMERICA CORP /DE/	42,22342,223	$484,720	0.15%	ADD 70%
66	Nuveen, LLC	41,51641,516	$476,603	0.15%	TRIM -28%
67	Man Group plc	38,82138,821	$445,665	0.14%	TRIM -31%
68	EntryPoint Capital, LLC	38,82138,821	$445,665	0.14%	ADD 53%
69	VOYA INVESTMENT MANAGEMENT LLC	38,72338,723	$444,540	0.14%	—
70	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	36,10936,109	$414,531	0.13%	ADD 32%
71	Quantbot Technologies LP	35,96535,965	$412,878	0.13%	ADD 814%
72	BRIDGEWAY CAPITAL MANAGEMENT, LLC	34,00034,000	$390,320	0.12%	ADD 42%
73	RHUMBLINE ADVISERS	33,60833,608	$385,814	0.12%	—
74	Dynamic Technology Lab Private Ltd	33,60233,602	$385,751	0.12%	NEW
75	Bridge City Capital, LLC	31,00031,000	$355,880	0.11%	ADD 41%
76	Brevan Howard Capital Management LP	30,07230,072	$345,227	0.11%	ADD 139%
77	UBS Group AG	29,42229,422	$337,765	0.10%	TRIM -17%
78	WELLS FARGO & COMPANY/MN	27,22227,222	$312,509	0.10%	TRIM -42%
79	Assenagon Asset Management S.A.	26,61826,618	$305,575	0.09%	—
80	BARCLAYS PLC	26,21426,214	$300,937	0.09%	TRIM -59%
81	SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC	25,59125,591	$293,785	0.09%	TRIM -37%
82	BAILARD, INC.	24,70024,700	$283,556	0.09%	NEW
83	DEUTSCHE BANK AG\	24,41024,410	$280,227	0.09%	ADD 17%
84	Walleye Capital LLC	24,12424,124	$276,944	0.09%	NEW
85	Aquatic Capital Management LLC	23,02423,024	$264,316	0.08%	ADD 177%
86	Point72 Asset Management, L.P.	22,26222,262	$255,568	0.08%	TRIM -81%
87	VERUS CAPITAL PARTNERS, LLC	20,90020,900	$239,932	0.07%	TRIM -9%
88	Quadrature Capital Ltd	20,73020,730	$237,980	0.07%	NEW
89	OSAIC HOLDINGS, INC.	20,53520,535	$235,712	0.07%	TRIM -9%
90	Creative Planning	20,31120,311	$233,170	0.07%	TRIM -29%
91	IEQ CAPITAL, LLC	19,47419,474	$223,562	0.07%	NEW
92	OCCUDO QUANTITATIVE STRATEGIES LP	16,22416,224	$219,348	0.06%	ADD 7%
93	SUSQUEHANNA INTERNATIONAL GROUP, LLP	18,05418,054	$207,260	0.06%	NEW
94	SATURNA CAPITAL CORP	17,60617,606	$202,117	0.06%	—
95	CITIGROUP INC	16,05416,054	$184,300	0.06%	ADD 40%
96	KETTLE HILL CAPITAL MANAGEMENT, LLC	15,00515,005	$172,257	0.05%	NEW
97	Greenhaven Road Investment Management, L.P.	13,96913,969	$160,364	0.05%	—
98	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	12,89512,895	$148,035	0.05%	ADD 2%
99	AXQ CAPITAL, LP	12,36412,364	$141,939	0.04%	NEW
100	Vanguard Global Advisers, LLC	11,62011,620	$133,398	0.04%	NEW

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

3.6M

3.2M

3.3M

3.7M

2.0M

$23M

NEEDHAM INVESTMENT MANAGEMENT LLC

1.4M

$16M

GENDELL JEFFREY L

597K

614K

946K

1.1M

1.2M

$14M

VANGUARD CAPITAL MANAGEMENT LLC

—

1.2M

$14M

AMERICAN CENTURY COMPANIES INC

295K

541K

671K

789K

884K

982K

$11M

WESTERLY CAPITAL MANAGEMENT, LLC

1.1M

1.0M

820K

1.1M

988K

965K

$11M

Harvey Partners, LLC

1.5M

1.2M

852K

853K

905K

$10M

First Eagle Investment Management, LLC

—

317K

509K

582K

640K

851K

$10M

Azarias Capital Management, L.P.

1.2M

571K

628K

635K

731K

817K

$9M

GEODE CAPITAL MANAGEMENT, LLC

599K

617K

620K

645K

668K

685K

$8M

DIMENSIONAL FUND ADVISORS LP

1.1M

947K

894K

811K

669K

664K

$8M

TWO SIGMA INVESTMENTS, LP

38K

—

51K

201K

638K

$7M

STATE STREET CORP

472K

485K

544K

531K

533K

545K

$6M

FIRST WILSHIRE SECURITIES MANAGEMENT INC

1.3M

901K

693K

613K

523K

$6M

AQR CAPITAL MANAGEMENT LLC

42K

292K

297K

307K

365K

499K

$6M

Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	143	24,270,484	86.3%	$279M
2025-Q4

Short interest has its own tab now — open SI →

Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.

Institutional ownership· 13F filers holding MTRX · 2026-Q1 methodology → sources →

143 holders

% of shares outstanding held

86.3%

Shares held (13F)

24,270,484

Reporting holders

143

Top holders

largest 100 of 143 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	2,014,2172.0M	$23M	7.16%	TRIM -45%
2	NEEDHAM INVESTMENT MANAGEMENT LLC	1,435,0001.4M	$16M	5.10%	—
3	GENDELL JEFFREY L	1,231,3071.2M	$14M	4.38%	ADD 16%
4	VANGUARD CAPITAL MANAGEMENT LLC	1,196,7871.2M	$14M	4.25%	NEW†
5	AMERICAN CENTURY COMPANIES INC	981,639981,639	$11M	3.49%	ADD 11%
6	WESTERLY CAPITAL MANAGEMENT, LLC	965,000965,000	$11M	3.43%	TRIM -2%
7	Harvey Partners, LLC	905,000905,000	$10M	3.22%	ADD 6%
8	First Eagle Investment Management, LLC	850,809850,809	$10M	3.02%	ADD 33%
9	Azarias Capital Management, L.P.	817,021817,021	$9M	2.90%	ADD 12%
10	GEODE CAPITAL MANAGEMENT, LLC	685,373685,373	$8M	2.44%	ADD 3%
11	DIMENSIONAL FUND ADVISORS LP	663,939663,939	$8M	2.36%	—
12	TWO SIGMA INVESTMENTS, LP	637,691637,691	$7M	2.27%	ADD 218%
13	STATE STREET CORP	545,485545,485	$6M	1.94%	ADD 2%
14	FIRST WILSHIRE SECURITIES MANAGEMENT INC	522,838522,838	$6M	1.86%	TRIM -15%
15	AQR CAPITAL MANAGEMENT LLC	498,941498,941	$6M	1.77%	ADD 37%
16	MILLENNIUM MANAGEMENT LLC	476,411476,411	$5M	1.69%	TRIM -2%
17	ACADIAN ASSET MANAGEMENT LLC	476,089476,089	$5M	1.69%	ADD 60%
18	CITADEL ADVISORS LLC	472,047472,047	$5M	1.68%	ADD 107%
19	Bank of New York Mellon Corp	466,897466,897	$5M	1.66%	TRIM -5%
20	CenterBook Partners LP	431,425431,425	$5M	1.53%	TRIM -32%
21	Connor, Clark & Lunn Investment Management Ltd.	363,108363,108	$4M	1.29%	TRIM -6%
22	Russell Investments Group, Ltd.	356,785356,785	$4M	1.27%	TRIM -9%
23	JACOBS LEVY EQUITY MANAGEMENT, INC	350,987350,987	$4M	1.25%	ADD 8%
24	MARSHALL WACE, LLP	313,296313,296	$4M	1.11%	ADD 895%
25	JANE STREET GROUP, LLC	313,175313,175	$4M	1.11%	ADD 186%
26	Congruence Capital, LLC	304,145304,145	$3M	1.08%	ADD 226%
27	MORGAN STANLEY	302,698302,698	$3M	1.08%	ADD 4%
28	GOLDMAN SACHS GROUP INC	272,390272,390	$3M	0.97%	TRIM -5%
29	JPMORGAN CHASE & CO	275,307275,307	$3M	0.98%	ADD 6%
30	De Lisle Partners LLP	258,790258,790	$3M	0.92%	—
31	RENAISSANCE TECHNOLOGIES LLC	255,800255,800	$3M	0.91%	ADD 2%
32	NORTHERN TRUST CORP	240,552240,552	$3M	0.86%	ADD 6%
33	Qube Research & Technologies Ltd	220,576220,576	$3M	0.78%	TRIM -2%
34	ALGERT GLOBAL LLC	192,525192,525	$2M	0.68%	ADD 5%
35	VANGUARD PORTFOLIO MANAGEMENT LLC	188,161188,161	$2M	0.67%	NEW
36	GSA CAPITAL PARTNERS LLP	185,534185,534	$2M	0.66%	TRIM -13%
37	VANGUARD FIDUCIARY TRUST CO	181,338181,338	$2M	0.64%	NEW
38	BNP PARIBAS FINANCIAL MARKETS	171,592171,592	$2M	0.61%	ADD 67%
39	COUNTRY TRUST BANK	165,237165,237	$2M	0.59%	ADD 25%
40	PANAGORA ASSET MANAGEMENT INC	156,268156,268	$2M	0.56%	ADD 7%
41	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	143,817143,817	$2M	0.51%	TRIM -65%
42	Prescott Group Capital Management, L.L.C.	123,392123,392	$1M	0.44%	ADD 36%
43	VICTORY CAPITAL MANAGEMENT INC	120,951120,951	$1M	0.43%	ADD 10%
44	ALLIANCEBERNSTEIN L.P.	113,740113,740	$1M	0.40%	TRIM -4%
45	MONEY CONCEPTS CAPITAL CORP	104,249104,249	$1M	0.37%	—
46	ROYAL BANK OF CANADA	100,697100,697	$1M	0.36%	ADD 249%
47	HRT FINANCIAL LP	96,31696,316	$1M	0.34%	NEW
48	CARY STREET PARTNERS FINANCIAL LLC	94,04094,040	$1M	0.33%	ADD 27%
49	Allspring Global Investments Holdings, LLC	81,91981,919	$963,367	0.29%	ADD 428%
50	Jump Financial, LLC	78,60078,600	$902,328	0.28%	ADD 43%
51	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	70,78870,788	$812,646	0.25%	TRIM -10%
52	D. E. Shaw & Co., Inc.	69,54169,541	$798,331	0.25%	TRIM -31%
53	XTX Topco Ltd	69,14569,145	$793,785	0.25%	ADD 42%
54	AMERIPRISE FINANCIAL INC	67,17067,170	$771,112	0.24%	TRIM -10%
55	ExodusPoint Capital Management, LP	63,71763,717	$731,471	0.23%	ADD 136%
56	PRICE T ROWE ASSOCIATES INC /MD/	63,19163,191	$726,000	0.22%	ADD 19%
57	MARTINGALE ASSET MANAGEMENT L P	57,50557,505	$660,158	0.20%	TRIM -30%
58	Pacific Ridge Capital Partners, LLC	54,40254,402	$624,535	0.19%	ADD 46%
59	STRS OHIO	54,20054,200	$622,216	0.19%	ADD 15%
60	Squarepoint Ops LLC	52,76452,764	$605,731	0.19%	ADD 356%
61	Boston Partners	52,70752,707	$605,080	0.19%	—
62	Invesco Ltd.	51,77151,771	$594,332	0.18%	—
63	Financial Plan, Inc.	47,61547,615	$546,620	0.17%	—
64	WINTON GROUP Ltd	43,02943,029	$493,973	0.15%	TRIM -50%
65	BANK OF AMERICA CORP /DE/	42,22342,223	$484,720	0.15%	ADD 70%
66	Nuveen, LLC	41,51641,516	$476,603	0.15%	TRIM -28%
67	Man Group plc	38,82138,821	$445,665	0.14%	TRIM -31%
68	EntryPoint Capital, LLC	38,82138,821	$445,665	0.14%	ADD 53%
69	VOYA INVESTMENT MANAGEMENT LLC	38,72338,723	$444,540	0.14%	—
70	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	36,10936,109	$414,531	0.13%	ADD 32%
71	Quantbot Technologies LP	35,96535,965	$412,878	0.13%	ADD 814%
72	BRIDGEWAY CAPITAL MANAGEMENT, LLC	34,00034,000	$390,320	0.12%	ADD 42%
73	RHUMBLINE ADVISERS	33,60833,608	$385,814	0.12%	—
74	Dynamic Technology Lab Private Ltd	33,60233,602	$385,751	0.12%	NEW
75	Bridge City Capital, LLC	31,00031,000	$355,880	0.11%	ADD 41%
76	Brevan Howard Capital Management LP	30,07230,072	$345,227	0.11%	ADD 139%
77	UBS Group AG	29,42229,422	$337,765	0.10%	TRIM -17%
78	WELLS FARGO & COMPANY/MN	27,22227,222	$312,509	0.10%	TRIM -42%
79	Assenagon Asset Management S.A.	26,61826,618	$305,575	0.09%	—
80	BARCLAYS PLC	26,21426,214	$300,937	0.09%	TRIM -59%
81	SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC	25,59125,591	$293,785	0.09%	TRIM -37%
82	BAILARD, INC.	24,70024,700	$283,556	0.09%	NEW
83	DEUTSCHE BANK AG\	24,41024,410	$280,227	0.09%	ADD 17%
84	Walleye Capital LLC	24,12424,124	$276,944	0.09%	NEW
85	Aquatic Capital Management LLC	23,02423,024	$264,316	0.08%	ADD 177%
86	Point72 Asset Management, L.P.	22,26222,262	$255,568	0.08%	TRIM -81%
87	VERUS CAPITAL PARTNERS, LLC	20,90020,900	$239,932	0.07%	TRIM -9%
88	Quadrature Capital Ltd	20,73020,730	$237,980	0.07%	NEW
89	OSAIC HOLDINGS, INC.	20,53520,535	$235,712	0.07%	TRIM -9%
90	Creative Planning	20,31120,311	$233,170	0.07%	TRIM -29%
91	IEQ CAPITAL, LLC	19,47419,474	$223,562	0.07%	NEW
92	OCCUDO QUANTITATIVE STRATEGIES LP	16,22416,224	$219,348	0.06%	ADD 7%
93	SUSQUEHANNA INTERNATIONAL GROUP, LLP	18,05418,054	$207,260	0.06%	NEW
94	SATURNA CAPITAL CORP	17,60617,606	$202,117	0.06%	—
95	CITIGROUP INC	16,05416,054	$184,300	0.06%	ADD 40%
96	KETTLE HILL CAPITAL MANAGEMENT, LLC	15,00515,005	$172,257	0.05%	NEW
97	Greenhaven Road Investment Management, L.P.	13,96913,969	$160,364	0.05%	—
98	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	12,89512,895	$148,035	0.05%	ADD 2%
99	AXQ CAPITAL, LP	12,36412,364	$141,939	0.04%	NEW
100	Vanguard Global Advisers, LLC	11,62011,620	$133,398	0.04%	NEW

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

3.6M

3.2M

3.3M

3.7M

2.0M

$23M

NEEDHAM INVESTMENT MANAGEMENT LLC

1.4M

$16M

GENDELL JEFFREY L

597K

614K

946K

1.1M

1.2M

$14M

VANGUARD CAPITAL MANAGEMENT LLC

—

1.2M

$14M

AMERICAN CENTURY COMPANIES INC

295K

541K

671K

789K

884K

982K

$11M

WESTERLY CAPITAL MANAGEMENT, LLC

1.1M

1.0M

820K

1.1M

988K

965K

$11M

Harvey Partners, LLC

1.5M

1.2M

852K

853K

905K

$10M

First Eagle Investment Management, LLC

—

317K

509K

582K

640K

851K

$10M

Azarias Capital Management, L.P.

1.2M

571K

628K

635K

731K

817K

$9M

GEODE CAPITAL MANAGEMENT, LLC

599K

617K

620K

645K

668K

685K

$8M

DIMENSIONAL FUND ADVISORS LP

1.1M

947K

894K

811K

669K

664K

$8M

TWO SIGMA INVESTMENTS, LP

38K

—

51K

201K

638K

$7M

STATE STREET CORP

472K

485K

544K

531K

533K

545K

$6M

FIRST WILSHIRE SECURITIES MANAGEMENT INC

1.3M

901K

693K

613K

523K

$6M

AQR CAPITAL MANAGEMENT LLC

42K

292K

297K

307K

365K

499K

$6M

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	143	24,270,484	86.3%	$279M
2025-Q4

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MTRX US Equity☆

Institutional ownership· 13F filers holding MTRX · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Institutional ownership· 13F filers holding MTRX · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

MTRX US Equity