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Lam Research

2,629 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, 895 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: 83.89%81.08% (-2.8%)

17% less repeat investments, than reductions

Existing positions increased: 895 | Existing positions reduced: 1,072

Holders
2,629
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
BHCM
551
Brevan Howard Capital Management
Jersey
$12.8M
VC
552
Vestor Capital
Illinois
$12.8M
ABTD
553
Arvest Bank Trust Division
Oklahoma
$12.8M
MCM
554
Marsico Capital Management
Colorado
$12.7M
FMI
555
Factory Mutual Insurance
Massachusetts
$12.7M
MIM
556
Marco Investment Management
Georgia
$12.7M
UB
557
UMB Bank
Missouri
$12.7M
NTIC
558
Napean Trading & Investment Company
Singapore
$12.5M
NMERB
559
New Mexico Educational Retirement Board
New Mexico
$12.4M
CP
560
CenterBook Partners
Connecticut
$12.3M
ECP
561
Elemental Capital Partners
California
$12.3M
FSA
562
Fort Sheridan Advisors
Illinois
$12.1M
MIC
563
Means Investment Company
Maine
$12.1M
FIA
564
Foundations Investment Advisors
Arizona
$12.1M
FFA
565
Farther Finance Advisors
California
$12.1M
AIP
566
Ameritas Investment Partners
Nebraska
$12M
RWM
567
Rockline Wealth Management
New York
$12M
AA
568
Apriem Advisors
California
$12M
EOJOAM
569
E. Ohman J:or Asset Management
Sweden
$11.9M
RC
570
Riposte Capital
New York
$11.8M
HIS
571
Horizon Investment Services
Indiana
$11.7M
DPL
572
Danica Pension Livsforsikrings
$11.7M
HCA
573
Harbour Capital Advisors
Virginia
$11.6M
SFI
574
Siemens Fonds Invest
Germany
$11.5M
EWA
575
EP Wealth Advisors
California
$11.4M