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Lam Research

2,628 hedge funds and large institutions have $216B invested in Lam Research in 2026 Q1 according to their latest regulatory filings, with 395 funds opening new positions, 894 increasing their positions, 1,072 reducing their positions, and 104 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

5% less call options, than puts

Call options by funds: $4.46B | Put options by funds: $4.68B

2.81% less ownership

Funds ownership: 83.87%81.06% (-2.8%)

17% less repeat investments, than reductions

Existing positions increased: 894 | Existing positions reduced: 1,072

Holders
2,628
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
140
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$4.46B
Puts
$4.68B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
VC
551
Vestor Capital
Illinois
$12.8M
ABTD
552
Arvest Bank Trust Division
Oklahoma
$12.8M
MCM
553
Marsico Capital Management
Colorado
$12.7M
FMI
554
Factory Mutual Insurance
Massachusetts
$12.7M
MIM
555
Marco Investment Management
Georgia
$12.7M
UB
556
UMB Bank
Missouri
$12.7M
NTIC
557
Napean Trading & Investment Company
Singapore
$12.5M
NMERB
558
New Mexico Educational Retirement Board
New Mexico
$12.4M
CP
559
CenterBook Partners
Connecticut
$12.3M
ECP
560
Elemental Capital Partners
California
$12.3M
FSA
561
Fort Sheridan Advisors
Illinois
$12.1M
MIC
562
Means Investment Company
Maine
$12.1M
FIA
563
Foundations Investment Advisors
Arizona
$12.1M
FFA
564
Farther Finance Advisors
California
$12.1M
AIP
565
Ameritas Investment Partners
Nebraska
$12M
RWM
566
Rockline Wealth Management
New York
$12M
AA
567
Apriem Advisors
California
$12M
EOJOAM
568
E. Ohman J:or Asset Management
Sweden
$11.9M
RC
569
Riposte Capital
New York
$11.8M
HIS
570
Horizon Investment Services
Indiana
$11.7M
DPL
571
Danica Pension Livsforsikrings
$11.7M
HCA
572
Harbour Capital Advisors
Virginia
$11.6M
SFI
573
Siemens Fonds Invest
Germany
$11.5M
EWA
574
EP Wealth Advisors
California
$11.4M
FFM
575
Fisher Funds Management
New Zealand
$11.4M