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 76 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	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$13.41M 1,400,904 shares	0.01%	+194.08K(+16.10%)Added	SEC filing ↗ Nov 12, 2026	▾
02	First Eagle Investment Management, LLC CIK 1325447 · View history	$8.19M 855,574 shares	0.01%	-134.64K(-13.60%)Reduced	SEC filing ↗ Nov 10, 2026	▾
03	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$6.77M 706,808 shares	0.00%	-14.51K(-2.00%)Reduced	SEC filing ↗ Nov 6, 2026	▾
04	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$6.27M 655,149 shares	0.00%	-10.12K(-1.50%)Reduced	SEC filing ↗ Nov 4, 2026	▾
05	STATE STREET CORP CIK 93751 · View history	$5.62M 587,019 shares	0.00%	+6.01K(+1.00%)Added	SEC filing ↗ Nov 12, 2026	▾
06	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$5.25M 549,525 shares	0.01%	-321.98K(-36.90%)Reduced	SEC filing ↗ Nov 9, 2026	▾
07	JPMORGAN CHASE & CO CIK 19617 · View history	$4.97M 524,302 shares	0.00%	+63.84K(+13.90%)Added	SEC filing ↗ Nov 12, 2026	▾
08	Bank of New York Mellon Corp CIK 1390777 · View history	$4.24M 442,571 shares	0.00%	-14.79K(-3.20%)Reduced	SEC filing ↗ Nov 5, 2026	▾
09	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$4.18M 437,152 shares	0.01%	+154.59K(+54.70%)Added	SEC filing ↗ Nov 12, 2026	▾
10	Azarias Capital Management, L.P. CIK 1625279 · View history	$4.07M 425,763 shares	2.42%	-247.93K(-36.80%)Reduced	SEC filing ↗ Oct 14, 2026	▾
11	BNP PARIBAS FINANCIAL MARKETS CIK 1166588 · View history	$3.86M 403,613 shares	0.00%	+124.42K(+44.60%)Added	SEC filing ↗ Nov 12, 2026	▾
12	PANAGORA ASSET MANAGEMENT INC CIK 883677 · View history	$3.35M 350,070 shares	0.01%	+50.64K(+16.90%)Added	SEC filing ↗ Nov 12, 2026	▾
13	Russell Investments Group, Ltd. CIK 1692234 · View history	$2.72M 284,153 shares	0.00%	+17.67K(+6.60%)Added	SEC filing ↗ Nov 6, 2026	▾
14	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$2.07M 215,983 shares	0.00%	-79.44K(-26.90%)Reduced	SEC filing ↗ Nov 10, 2026	▾
15	CITIGROUP INC CIK 831001 · View history	$1.67M 174,482 shares	0.00%	+133.90K(+329.90%)Added	SEC filing ↗ Nov 4, 2026	▾
16	JANE STREET GROUP, LLC CIK 1595888 · View history	$1.57M 164,049 shares	0.00%	+57.67K(+54.20%)Added	SEC filing ↗ Nov 12, 2026	▾
17	UBS Group AG CIK 1610520 · View history	$1.56M 162,536 shares	0.00%	+109.50K(+206.40%)Added	SEC filing ↗ Nov 10, 2026	▾
18	Y-Intercept (Hong Kong) Ltd CIK 1772875 · View history	$1.55M 161,766 shares	0.03%	+125.23K(+342.80%)Added	SEC filing ↗ Oct 16, 2026	▾
19	Prescott Group Capital Management, L.L.C. CIK 1166152 · View history	$1.09M 114,392 shares	0.10%	0(0.00%)Unchanged	SEC filing ↗ Oct 30, 2026	▾
20	Allspring Global Investments Holdings, LLC CIK 1890906 · View history	$998.77K 95,485 shares	0.00%	-188.03K(-66.30%)Reduced	SEC filing ↗ Nov 4, 2026	▾

Showing 20 / 76 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

9,718,234

Not deduplicated across managers

Disclosed value

$93.04M

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 · Q3 2026

Explore all 76 reporting institutions.

This page includes 20 of 76 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.