CHARLES SCHWAB INVESTMENT MANAGEMENT INC

Position in WST — West Pharmaceutical Services Inc

CIK 884546 SAN FRANCISCO, CA

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Position in WST

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

Position Value

$138,937,772

-$10,409,045 QoQ

Shares Held

554,332

+2.1% QoQ

Ownership

0.785%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 99.99476847809616.ToString("F0")% Shared 0.ToString("F0")% None 0.00523152190384102.ToString("F0")%

Common Shares in WST Over Time

Shares Held

Position Value (USD)

Position in Medical Instruments & Supplies

Healthcare · as of Mar 31, 2026

CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $3,259,907,449 across 36 Medical Instruments & Supplies names. WST ranks #5 (4.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ISRG	Intuitive Surgical Inc	2,623,702	$1,209,500,384
2	BDX	Becton Dickinson & Co	3,324,127	$522,652,487
3	RMD	Resmed Inc	1,135,299	$254,851,919
4	HOLX	HOLOGIC INC	2,157,358	$163,074,691
5	WST	West Pharmaceutical Services Inc This page	554,332	$138,937,772
6	COO	Cooper Companies, Inc.	1,805,666	$129,105,119
7	ALGN	Align Technology Inc	643,483	$110,312,290
8	SOLV	Solventum Corp	1,519,514	$99,224,264

All Filings in WST

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$138,937,772	554,332	+2.1%	Shares	Sole	2026-05-15
2025-12-31	$149,346,817	542,803	+3.0%	Shares	Sole	2026-02-13
2025-09-30	$138,290,932	527,164	+4.9%	Shares	Sole	2025-11-10
2025-06-30	$109,915,055	502,354	+2.1%	Shares	Sole	2025-08-12
2025-03-31	$110,110,228	491,827	+5.1%	Shares	Sole	2025-09-15
2024-12-31	$153,337,387	468,120	+4.4%	Shares	Sole	2025-02-06
2024-09-30	$134,526,909	448,184	+1.5%	Shares	Sole	2024-11-12
2024-06-30	$145,401,968	441,428	+1.5%	Shares	Sole	2024-08-12
2024-03-31	$172,119,604	434,964	+2.9%	Shares	Sole	2024-05-09
2023-12-31	$148,882,674	422,818	+2.0%	Shares	Sole	2024-02-06
2023-09-30	$155,608,592	414,724	+1.0%	Shares	Sole	2023-11-08
2023-06-30	$157,063,217	410,655	+1.2%	Shares	Sole	2023-08-10
2023-03-31	$140,534,468	405,618	-9.5%	Shares	Sole	2023-05-12
2022-12-31	$105,498,697	448,263	+5.3%	Shares	Sole	2023-02-13
2022-09-30	$104,798,335	425,871	+2.9%	Shares	Sole	2022-11-14
2022-06-30	$125,134,917	413,847	+3.0%	Shares	Sole	2022-08-15
2022-03-31	$165,085,295	401,951	+0.5%	Shares	Sole	2022-05-13
2021-12-31	$187,606,814	400,006	+4.0%	Shares	Sole	2022-02-11
2021-09-30	$163,217,374	384,457	-0.1%	Shares	Sole	2021-11-16
2021-06-30	$138,178,089	384,790	-0.7%	Shares	Sole	2021-08-16
2021-03-31	$109,230,044	387,643	-0.3%	Shares	Sole	2021-05-17
2020-12-31	$110,179,259	388,900	-10.1%	Shares	Sole	2021-02-16
2020-09-30	$118,874,732	432,429	-27.6%	Shares	Sole	2020-11-13
2020-06-30	$135,738,164	597,518	+33.3%	Shares	Sole	2020-08-20
2020-03-31	$68,223,225	448,100	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.