CHARLES SCHWAB INVESTMENT MANAGEMENT INC

Position in MTRN — MATERION Corp

CIK 884546 SAN FRANCISCO, CA

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Position in MTRN

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$42,316,489

+$4,564,857 QoQ

Shares Held

292,544

-3.7% QoQ

Ownership

1.41%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 99.99350525049223.ToString("F0")% Shared 0.ToString("F0")% None 0.006494749507766353.ToString("F0")%

Common Shares in MTRN Over Time

Shares Held

Position Value (USD)

Position in Other Industrial Metals & Mining

Basic Materials · as of Mar 31, 2026

CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $292,455,148 across 17 Other Industrial Metals & Mining names. MTRN ranks #2 (14.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TECK	Teck Resources Ltd	1,772,982	$91,751,818
2	MTRN	MATERION Corp This page	292,544	$42,316,489
3	MP	MP Materials Corp. / DE	852,620	$41,147,441
4	BHP	BHP Group Ltd	459,376	$33,415,009
5	USAR	USA Rare Earth, Inc.	1,449,933	$21,944,735
6	RIO	Rio Tinto PLC	194,311	$18,127,272
7	CMP	Compass Minerals International Inc	704,438	$16,448,627
8	GSM	Ferroglobe PLC	1,475,448	$6,078,845

All Filings in MTRN

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$42,316,489	292,544	-3.7%	Shares	Sole	2026-05-15
2025-12-31	$37,751,632	303,665	-0.1%	Shares	Sole	2026-02-13
2025-09-30	$36,720,199	303,950	+5.0%	Shares	Sole	2025-11-10
2025-06-30	$22,975,472	289,473	+7.8%	Shares	Sole	2025-08-12
2025-03-31	$21,921,350	268,644	+1.7%	Shares	Sole	2025-09-15
2024-12-31	$26,123,799	264,197	+4.4%	Shares	Sole	2025-02-06
2024-09-30	$28,298,902	252,985	+2.4%	Shares	Sole	2024-11-12
2024-06-30	$26,712,543	247,041	+3.8%	Shares	Sole	2024-08-12
2024-03-31	$31,366,776	238,078	+2.3%	Shares	Sole	2024-05-09
2023-12-31	$30,296,085	232,814	-2.1%	Shares	Sole	2024-02-06
2023-09-30	$24,229,306	237,752	+1.5%	Shares	Sole	2023-11-08
2023-06-30	$26,744,383	234,189	-2.8%	Shares	Sole	2023-08-10
2023-03-31	$27,937,556	240,841	-1.1%	Shares	Sole	2023-05-12
2022-12-31	$21,315,073	243,573	+2.8%	Shares	Sole	2023-02-13
2022-09-30	$18,947,520	236,844	-0.1%	Shares	Sole	2022-11-14
2022-06-30	$17,483,742	237,132	+2.5%	Shares	Sole	2022-08-15
2022-03-31	$19,828,575	231,264	+1.9%	Shares	Sole	2022-05-13
2021-12-31	$20,866,242	226,955	+1.4%	Shares	Sole	2022-02-11
2021-09-30	$15,370,417	223,928	+3.1%	Shares	Sole	2021-11-16
2021-06-30	$16,359,765	217,117	+3.6%	Shares	Sole	2021-08-16
2021-03-31	$13,878,803	209,523	+0.1%	Shares	Sole	2021-05-17
2020-12-31	$13,343,286	209,405	+0.4%	Shares	Sole	2021-02-16
2020-09-30	$10,846,538	208,467	-16.2%	Shares	Sole	2020-11-13
2020-06-30	$15,288,750	248,638	-4.7%	Shares	Sole	2020-08-20
2020-03-31	$9,133,583	260,885	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.