Main Street Research LLC

Position in LRCX — Lam Research Corp

CIK 1513211 SAUSALITO, CA

Position in LRCX

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

Position Value

$873,593

+$448,837 QoQ

Shares Held

2,016

+1.4% QoQ

Ownership

0.000%

of shares outstanding

% of Portfolio

0.05%

of 13F equity value

Holder Rank

#1,957

of 3,114 holders

Holding Since

Jun 2021

8 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. LRCX ranks #2 (1.0% of the industry book) .

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

8 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$873,593	2,016	+1.4%	Shares	Sole	2026-07-29
2026-03-31	$424,756	1,988	+30.4%	Shares	Sole	2026-04-30
2025-12-31	$260,878	1,524	+574.3%	Shares	Sole	2026-02-09
2024-06-30	$240,656	226	-6.2%	Shares	Sole	2024-07-29
2024-03-31	$234,148	241	-57.6%	Shares	Sole	2024-05-01
2021-12-31	$408,477	568	-1.0%	Shares	Sole	2022-02-09
2021-09-30	$326,692	574	0.0%	Shares	Sole	2021-11-12
2021-06-30	$373,501	574	—	Shares	Sole	2021-08-06
No filing history on record for this holder in this stock.