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WESTFIELD CAPITAL MANAGEMENT CO LP

Position in LRCX — Lam Research Corp

CIK 1177719 BOSTON, MA

Position in LRCX

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$123,765,114
+$70,220,110 QoQ
Shares Held
285,614
-61.2% QoQ
Ownership
0.023%
of shares outstanding
% of Portfolio
0.41%
of 13F equity value
Holder Rank
#267
of 3,114 holders
Holding Since
Sep 2020
13 quarters on record
Voting authority Sole 73% Shared 0% None 27%

Common Shares in LRCX Over Time

Shares Held

Position Value (USD)

Position in Semiconductor Equipment & Materials

Technology · as of Jun 30, 2026

WESTFIELD CAPITAL MANAGEMENT CO LP holds $628,046,750 across 6 Semiconductor Equipment & Materials names. LRCX ranks #2 (19.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 LRCX
Lam Research Corp
This page
285,614 $123,765,114

All Filings in LRCX

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13 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $123,765,114 285,614
2025-03-31 $53,545,004 736,520
2024-12-31 $90,783,720 1,256,870
2022-12-31 $42,532,678 101,196
2022-09-30 $44,479,248 121,528
2022-06-30 $41,570,932 97,550
2022-03-31 $6,814,206 12,675
2021-12-31 $9,309,396 12,945
2021-09-30 $7,384,721 12,975
2021-06-30 $8,579,479 13,185
2021-03-31 $7,526,809 12,645
2020-12-31 $6,026,165 12,760
2020-09-30 $46,674,902 140,693