O'SHAUGHNESSY ASSET MANAGEMENT, LLC

Position in MTRN — MATERION Corp

CIK 1423442 Stamford, CT

Position in MTRN

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$227,389

+$225,048 QoQ

Shares Held

1,572

+3393.3% QoQ

Ownership

0.008%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2020

2 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Basic Materials · as of Mar 31, 2026

O'SHAUGHNESSY ASSET MANAGEMENT, LLC holds $79,337,792 across 7 Other Industrial Metals & Mining names. MTRN ranks #6 (0.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VALE	Vale S.A.	2,654,091	$42,226,587
2	BHP	BHP Group Ltd	242,134	$17,612,827
3	RIO	Rio Tinto PLC	183,998	$17,165,173
4	TECK	Teck Resources Ltd	33,158	$1,715,926
5	MP	MP Materials Corp. / DE	7,327	$353,601
6	MTRN	MATERION Corp This page	1,572	$227,389
7	SLI	Standard Lithium Ltd.	10,642	$36,289

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
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.