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Lam Research

2,347 hedge funds and large institutions have $183B invested in Lam Research in 2025 Q4 according to their latest regulatory filings, with 427 funds opening new positions, 763 increasing their positions, 890 reducing their positions, and 122 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:

3.54% more ownership

Funds ownership: 80.68%84.23% (+3.5%)

14% less repeat investments, than reductions

Existing positions increased: 763 | Existing positions reduced: 890

29% less call options, than puts

Call options by funds: $4.3B | Put options by funds: $6.04B

Holders
2,347
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
113
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$4.3B
Puts
$6.04B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
OFS
1926
Oldfather Financial Services
Nebraska
$265K
LJAC
1927
L.J. Altfest & Co
New York
$265K
IIC
1928
Integrated Investment Consultants
Michigan
$264K
SC
1929
Seldon Capital
California
$264K
CFO
1930
Collective Family Office
Pennsylvania
$263K
FHC
1931
First Horizon Corporation
Tennessee
$262K
MSR
1932
Main Street Research
Connecticut
$261K
WMA
1933
Wealth Management Associates
New Jersey
$261K
BLC
1934
Brown, Lisle/Cummings
Rhode Island
$260K
SIM
1935
Seaview Investment Managers
Florida
$260K
WE
1936
Wealth Effects
Massachusetts
$260K
TC
1937
T3 Companies
New York
$259K
LWM
1938
LeConte Wealth Management
Tennessee
$258K
PK
1939
Pflug Koory
Nebraska
$258K
FIG
1940
FSA Investment Group
Florida
$257K
BIG
1941
Builder Investment Group
Georgia
$257K
LF
1942
Lantz Financial
Illinois
$256K
JMFC
1943
J.M. Forbes & Co
Massachusetts
$256K
TWM
1944
Topsail Wealth Management
North Carolina
$256K
AG
1945
AlTi Global
New York
$255K
CWL
1946
Cedarwood Wealth LLC
Colorado
$255K
SIA
1947
SeaBridge Investment Advisors
New Jersey
$254K
BZWA
1948
Blue Zone Wealth Advisors
California
$253K
SAM
1949
Simplify Asset Management
Nevada
$253K
LI
1950
LRI Investments
Florida
$252K