GUYASUTA INVESTMENT ADVISORS INC

Position in LRCX — Lam Research Corp

CIK 928568 PITTSBURGH, PA

Position in LRCX

as of Jun 30, 2026 · filed Jul 20, 2026 Compact

Position Value

$5,975,620

+$3,029,249 QoQ

Shares Held

13,790

0.0% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.35%

of 13F equity value

Holder Rank

#1,047

of 3,103 holders

Holding Since

Jun 2025

5 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

GUYASUTA INVESTMENT ADVISORS INC holds $139,672,354 across 5 Semiconductor Equipment & Materials names. LRCX ranks #3 (4.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMAT	Applied Materials Inc /De	109,153	$78,917,619
2	ASML	Asml Holding NV	26,829	$53,374,683
3	LRCX	Lam Research Corp This page	13,790	$5,975,620
4	KLAC	Kla Corp	3,240	$977,540
5	Q	Qnity Electronics, Inc.	2,614	$426,892

5 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$5,975,620	13,790	0.0%	Shares	Sole	2026-07-20
2026-03-31	$2,946,371	13,790	-6.6%	Shares	Sole	2026-04-17
2025-12-31	$2,526,959	14,762	+604.6%	Shares	Sole	2026-01-23
2025-09-30	$280,520	2,095	+0.9%	Shares	Sole	2025-10-21
2025-06-30	$202,175	2,077	—	Shares	Sole	2025-07-17
No filing history on record for this holder in this stock.