Main Street Research LLC

Position in KLAC — Kla Corp

CIK 1513211 SAUSALITO, CA

Position in KLAC

as of Jun 30, 2026 · filed Jul 29, 2026 Compact

Position Value

$483,942

+$223,326 QoQ

Shares Held

1,604

-9.4% QoQ

Ownership

0.000%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

#1,784

of 2,481 holders

Holding Since

Dec 2020

9 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

Main Street Research LLC holds $86,031,332 across 4 Semiconductor Equipment & Materials names. KLAC ranks #3 (0.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ASML	Asml Holding NV	42,396	$84,344,294
2	LRCX	Lam Research Corp	2,016	$873,593
3	KLAC	Kla Corp This page	1,604	$483,942
4	ENTG	Entegris Inc	1,832	$329,503

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$483,942	1,604	+806.2%	Shares	Sole	2026-07-29
2026-03-31	$260,616	177	-20.6%	Shares	Sole	2026-04-30
2025-12-31	$270,962	223	-5.1%	Shares	Sole	2026-02-09
2025-09-30	$253,471	235	-62.4%	Shares	Sole	2025-11-13
2021-12-31	$268,818	625	-12.7%	Shares	Sole	2022-02-09
2021-09-30	$239,509	716	-8.6%	Shares	Sole	2021-11-12
2021-06-30	$253,856	783	0.0%	Shares	Sole	2021-08-06
2021-03-31	$258,703	783	0.0%	Shares	Sole	2021-05-07
2020-12-31	$202,726	783	—	Shares	Sole	2021-02-12
No filing history on record for this holder in this stock.