Company · Ownership research

Mistras Group, Inc. MG

CIK 0001436126 · CUSIP 60649T107

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 60649T107 (MG), not CUSIP 60649T907 (MG), CUSIP 60649T957 (MG), and does not merge CUSIPs.

This page lists the top 20 of 137 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	Mill Road Capital Management LLC CIK 1512275 · View history	$33.71M 1,929,509 shares	16.64%	+58.93K(+3.20%)Added	SEC filing ↗ Aug 14, 2026	▾
02	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$29.72M 1,700,793 shares	0.01%	-2.89K(-0.20%)Reduced	SEC filing ↗ Aug 11, 2026	▾
03	ROYCE & ASSOCIATES LP CIK 906304 · View history	$27.62M 1,580,728 shares	0.22%	+47.68K(+3.10%)Added	SEC filing ↗ Aug 14, 2026	▾
04	WEBER CAPITAL MANAGEMENT LLC /ADV CIK 1099905 · View history	$25.30M 1,448,154 shares	21.53%	-8.81K(-0.60%)Reduced	SEC filing ↗ Aug 13, 2026	▾
05	BlackRock, Inc. CIK 2012383 · View history	$20.37M 1,166,197 shares	0.00%	+306.75K(+35.70%)Added	SEC filing ↗ Aug 7, 2026	▾
06	IES Holdings, Inc. CIK 1048268 · View history	$19.64M 1,124,235 shares	6.32%	+3.69K(+0.30%)Added	SEC filing ↗ Aug 14, 2026	▾
07	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · View history	$18.39M 1,052,512 shares	0.00%	+122.33K(+13.20%)Added	SEC filing ↗ Aug 13, 2026	▾
08	FEDERATED HERMES, INC. CIK 1056288 · View history	$11.46M 656,032 shares	0.02%	0(0.00%)Unchanged	SEC filing ↗ Aug 12, 2026	▾
09	First Eagle Investment Management, LLC CIK 1325447 · Amended · View history	$9.68M 553,855 shares	0.02%	+272.32K(+96.70%)Added	SEC filing ↗ Aug 24, 2026	▾
10	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$8.91M 510,059 shares	0.00%	+156.65K(+44.30%)Added	SEC filing ↗ Aug 12, 2026	▾
11	DEUTSCHE BANK AG\ CIK 948046 · View history	$6.80M 389,488 shares	0.00%	+10.03K(+2.60%)Added	SEC filing ↗ Aug 7, 2026	▾
12	STATE STREET CORP CIK 93751 · Amended · View history	$6.74M 385,924 shares	0.00%	+73.76K(+23.60%)Added	SEC filing ↗ Sep 22, 2026	▾
13	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$6.19M 354,371 shares	0.11%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2026	▾
14	Pacific Ridge Capital Partners, LLC CIK 1591546 · View history	$4.94M 282,880 shares	0.90%	-2.39K(-0.80%)Reduced	SEC filing ↗ Aug 12, 2026	▾
15	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$4.83M 276,512 shares	0.01%	+118.18K(+74.60%)Added	SEC filing ↗ Aug 13, 2026	▾
16	Qube Research & Technologies Ltd CIK 1729829 · View history	$4.82M 275,749 shares	0.01%	+57.70K(+26.50%)Added	SEC filing ↗ Aug 14, 2026	▾
17	CSM Advisors, LLC CIK 1863523 · View history	$4.67M 267,586 shares	0.10%	-295(-0.10%)Reduced	SEC filing ↗ Aug 14, 2026	▾
18	Clearline Capital LP CIK 1600136 · View history	$4.67M 267,460 shares	0.30%	-286.63K(-51.70%)Reduced	SEC filing ↗ Aug 14, 2026	▾
19	ESSEX INVESTMENT MANAGEMENT CO LLC CIK 201772 · View history	$4.49M 257,127 shares	0.59%	-11.44K(-4.30%)Reduced	SEC filing ↗ Aug 6, 2026	▾
20	ALGERT GLOBAL LLC CIK 1275218 · View history	$4.06M 232,669 shares	0.05%	+53.38K(+29.80%)Added	SEC filing ↗ Aug 13, 2026	▾

Showing 20 / 137 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

137

Cancelled or null records excluded

Disclosed shares

19,275,752

Not deduplicated across managers

Disclosed value

$336.65M

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.

Mistras Group, Inc. · Q2 2026

Explore all 137 reporting institutions.

This page includes 20 of 137 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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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.