SIMPLEX TRADING, LLC

Position in MG — Mistras Group, Inc.

CIK 1488542 CHICAGO, IL

Position in MG

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$229,747

+$99,713 QoQ

Shares Held

13,151

+49.5% QoQ

Ownership

0.041%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#87

of 136 holders

Holding Since

Mar 2020

17 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $2,233,633 across 6 Security & Protection Services names. MG ranks #3 (10.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CXW	CoreCivic, Inc.	37,343	$1,134,480
2	EVLV	Evolv Technologies Holdings, Inc.	92,936	$539,028
3	MG	Mistras Group, Inc. This page	13,151	$229,747
4	ALLE	Allegion plc	1,304	$183,198
5	BCO	Brinks Co	1,541	$145,609
6	MSA	MSA Safety Inc	9	$1,571

17 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$229,747	13,151	+49.5%	Shares	Sole	2026-08-12
2026-03-31	$130,034	8,798	-55.6%	Shares	Sole	2026-05-14
2025-12-31	$250,406	19,795	-45.5%	Shares	Sole	2026-02-11
2025-09-30	$357,575	36,339	+1067.3%	Shares	Sole	2025-11-12
2025-06-30	$24,935	3,113	-80.3%	Shares	Sole	2025-08-05
2024-12-31	$143,356	15,823	+551.7%	Shares	Sole	2025-02-11
2024-09-30	$27,606	2,428	+235.8%	Shares	Sole	2024-11-08
2024-06-30	$5	723	+29.3%	Shares	Sole	2024-07-25
2023-12-31	$4,091	559	-7.8%	Shares	Sole	2024-02-02
2022-09-30	$2,702	606	-76.6%	Shares	Sole	2022-11-04
2022-06-30	$15,402	2,593	-87.7%	Shares	Sole	2022-08-03
2022-03-31	$139,722	21,138	+277.3%	Shares	Sole	2022-05-02
2021-12-31	$41,630	5,603	+317.5%	Shares	Sole	2022-02-23
2021-03-31	$15,312	1,342	-92.8%	Shares	Sole	2021-04-26
2020-12-31	$143,963	18,552	-2.2%	Shares	Sole	2021-02-02
2020-09-30	$74,200	18,977	+571.5%	Shares	Sole	2020-10-14
2020-03-31	$12,038	2,826	—	Shares	Sole	2020-04-29
No filing history on record for this holder in this stock.