CHARLES SCHWAB INVESTMENT MANAGEMENT INC

Position in ESE — Esco Technologies Inc

CIK 884546 SAN FRANCISCO, CA

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Position in ESE

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

Position Value

$84,057,880

+$25,312,314 QoQ

Shares Held

298,745

-0.6% QoQ

Ownership

1.15%

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 99.98794958911446.ToString("F0")% Shared 0.ToString("F0")% None 0.012050410885537833.ToString("F0")%

Common Shares in ESE Over Time

Shares Held

Position Value (USD)

Position in Scientific & Technical Instruments

Technology · as of Mar 31, 2026

CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $2,134,200,047 across 19 Scientific & Technical Instruments names. ESE ranks #8 (3.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	COHR	Coherent Corp.	2,045,248	$487,198,526
2	KEYS	Keysight Technologies, Inc.	1,089,863	$307,744,615
3	GRMN	Garmin Ltd	1,016,657	$235,874,590
4	TDY	Teledyne Technologies Inc	356,255	$215,537,837
5	MKSI	Mks Inc	866,647	$199,164,147
6	TRMB	Trimble Inc.	2,197,552	$143,346,316
7	FTV	Fortive Corp	2,017,322	$111,517,560
8	ESE	Esco Technologies Inc This page	298,745	$84,057,880

All Filings in ESE

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$84,057,880	298,745	-0.6%	Shares	Sole	2026-05-15
2025-12-31	$58,745,566	300,658	-2.8%	Shares	Sole	2026-02-13
2025-09-30	$65,326,722	309,444	-0.1%	Shares	Sole	2025-11-10
2025-06-30	$59,436,337	309,774	-1.8%	Shares	Sole	2025-08-12
2025-03-31	$50,199,018	315,479	+3.1%	Shares	Sole	2025-09-15
2024-12-31	$40,772,517	306,077	+2.1%	Shares	Sole	2025-02-06
2024-09-30	$38,677,748	299,874	+2.7%	Shares	Sole	2024-11-12
2024-06-30	$30,662,331	291,911	+4.1%	Shares	Sole	2024-08-12
2024-03-31	$30,027,632	280,501	+2.5%	Shares	Sole	2024-05-09
2023-12-31	$32,032,983	273,716	+1.6%	Shares	Sole	2024-02-06
2023-09-30	$28,143,237	269,468	+3.2%	Shares	Sole	2023-11-08
2023-06-30	$27,065,979	261,179	-1.7%	Shares	Sole	2023-08-10
2023-03-31	$25,350,279	265,587	-0.6%	Shares	Sole	2023-05-12
2022-12-31	$23,394,277	267,241	+1.8%	Shares	Sole	2023-02-13
2022-09-30	$19,287,620	262,631	+3.5%	Shares	Sole	2022-11-14
2022-06-30	$17,353,946	253,824	+3.8%	Shares	Sole	2022-08-15
2022-03-31	$17,090,965	244,436	+6.8%	Shares	Sole	2022-05-13
2021-12-31	$20,605,460	228,975	+3.7%	Shares	Sole	2022-02-11
2021-09-30	$16,999,213	220,769	+3.2%	Shares	Sole	2021-11-16
2021-06-30	$20,076,653	214,014	+3.2%	Shares	Sole	2021-08-16
2021-03-31	$22,573,877	207,309	+0.5%	Shares	Sole	2021-05-17
2020-12-31	$21,294,389	206,301	+0.2%	Shares	Sole	2021-02-16
2020-09-30	$16,588,673	205,917	-2.7%	Shares	Sole	2020-11-13
2020-06-30	$17,882,152	211,548	-0.6%	Shares	Sole	2020-08-20
2020-03-31	$16,160,859	212,895	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.