O'SHAUGHNESSY ASSET MANAGEMENT, LLC

Position in MTRN — MATERION Corp

CIK 1423442 Stamford, CT

Position in MTRN

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$583,181

+$355,792 QoQ

Shares Held

1,961

+24.7% QoQ

Ownership

0.009%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#209

of 402 holders

Holding Since

Sep 2020

3 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Basic Materials · as of Jun 30, 2026

O'SHAUGHNESSY ASSET MANAGEMENT, LLC holds $85,077,856 across 5 Other Industrial Metals & Mining names. MTRN ranks #4 (0.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VALE	Vale S.A.	2,638,267	$39,679,535
2	BHP	BHP Group Ltd	298,700	$24,884,697
3	RIO	Rio Tinto PLC	206,076	$19,562,794
4	MTRN	MATERION Corp This page	1,961	$583,181
5	MP	MP Materials Corp. / DE	6,564	$367,649

3 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$583,181	1,961	+24.7%	Shares	Sole	2026-08-13
2026-03-31	$227,389	1,572	+3393.3%	Shares	Sole	2026-05-13
2020-09-30	$2,341	45	—	Shares	Sole	2020-11-12
No filing history on record for this holder in this stock.