Company · Ownership research

MATRIX SERVICE CO MTRX

CIK 0000866273 · CUSIP 576853105

Insider tradingInitial holdingsInstitutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 576853105 (MTRX), not CUSIP 576853955 (MTRX), CUSIP 576853905 (MTRX), CUSIP M6859E153 (MTRX), and does not merge CUSIPs.

This page lists the top 20 of 113 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock Inc. CIK 1364742 · View history	$33.28M 3,351,349 shares	0.00%	+1.40M(+71.50%)Added	SEC filing ↗ Aug 13, 2024	▾
02	FIRST WILSHIRE SECURITIES MANAGEMENT INC CIK 732847 · View history	$19.01M 1,914,763 shares	5.82%	-35.88K(-1.80%)Reduced	SEC filing ↗ Aug 14, 2024	▾
03	Harvey Partners, LLC CIK 1406484 · View history	$13.90M 1,400,000 shares	1.72%	+45.00K(+3.30%)Added	SEC filing ↗ Aug 14, 2024	▾
04	VANGUARD GROUP INC CIK 102909 · View history	$13.62M 1,371,809 shares	0.00%	+148.03K(+12.10%)Added	SEC filing ↗ Aug 13, 2024	▾
05	Azarias Capital Management, L.P. CIK 1625279 · View history	$12.64M 1,273,193 shares	5.68%	+282.09K(+28.50%)Added	SEC filing ↗ Jul 26, 2024	▾
06	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$11.64M 1,172,616 shares	0.00%	+3.21K(+0.30%)Added	SEC filing ↗ Aug 9, 2024	▾
07	WESTERLY CAPITAL MANAGEMENT, LLC CIK 1546172 · View history	$10.72M 1,080,000 shares	5.83%	+200.00K(+22.70%)Added	SEC filing ↗ Aug 14, 2024	▾
08	NEEDHAM INVESTMENT MANAGEMENT LLC CIK 1167212 · View history	$10.18M 1,025,000 shares	0.84%	+320.00K(+45.40%)Added	SEC filing ↗ Aug 14, 2024	▾
09	GENDELL JEFFREY L CIK 1056581 · View history	$9.30M 936,593 shares	0.33%	+66.04K(+7.60%)Added	SEC filing ↗ Aug 14, 2024	▾
10	ROYCE & ASSOCIATES LP CIK 906304 · View history	$7.50M 755,442 shares	0.07%	-10.23K(-1.30%)Reduced	SEC filing ↗ Aug 13, 2024	▾
11	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$5.89M 593,394 shares	0.00%	+336.51K(+131.00%)Added	SEC filing ↗ Aug 9, 2024	▾
12	Bank of New York Mellon Corp CIK 1390777 · View history	$5.71M 575,428 shares	0.00%	+65.90K(+12.90%)Added	SEC filing ↗ Jul 25, 2024	▾
13	Portolan Capital Management, LLC CIK 1350290 · View history	$3.76M 379,070 shares	0.31%	-344.25K(-47.60%)Reduced	SEC filing ↗ Aug 14, 2024	▾
14	FRANKLIN RESOURCES INC CIK 38777 · View history	$3.41M 343,480 shares	0.00%	-170.15K(-33.10%)Reduced	SEC filing ↗ Aug 14, 2024	▾
15	STATE STREET CORP CIK 93751 · View history	$3.26M 328,482 shares	0.00%	+234.99K(+251.30%)Added	SEC filing ↗ Aug 14, 2024	▾
16	Stanley-Laman Group, Ltd. CIK 1601489 · View history	$3.24M 326,621 shares	0.47%	+13.07K(+4.20%)Added	SEC filing ↗ Jul 18, 2024	▾
17	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$3.07M 309,085 shares	0.00%	-106.05K(-25.50%)Reduced	SEC filing ↗ Aug 14, 2024	▾
18	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$2.83M 284,961 shares	0.00%	+10.80K(+3.90%)Added	SEC filing ↗ Aug 14, 2024	▾
19	MARSHALL WACE, LLP CIK 1318757 · View history	$2.54M 255,297 shares	0.00%	-9.45K(-3.60%)Reduced	SEC filing ↗ Aug 14, 2024	▾
20	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$2.50M 251,411 shares	0.01%	-170.40K(-40.40%)Reduced	SEC filing ↗ Aug 6, 2024	▾

Showing 20 / 113 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

113

Cancelled or null records excluded

Disclosed shares

22,653,295

Not deduplicated across managers

Disclosed value

$224.90M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

MATRIX SERVICE CO · Q2 2024

Explore all 113 reporting institutions.

This page includes 20 of 113 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.