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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
TCA
2351
Teewinot Capital Advisers
New York
EF
2352
Empowered Funds
Pennsylvania
AMH
2353
Aspex Management (HK)
Hong Kong
Voloridge Investment Management
2354
Voloridge Investment Management
Florida
SGM
2355
Skye Global Management
Florida
CVA
2356
Ceredex Value Advisors
Florida
TI
2357
Trexquant Investment
Connecticut
SS
2358
Spinecap SAS
France
Hudson Bay Capital Management
2359
Hudson Bay Capital Management
Connecticut
ACM
2360
Aquatic Capital Management
Illinois
VIM
2361
Vinva Investment Management
Australia
OBAM
2362
ODDO BHF Asset Management
France
GH
2363
GAM Holding
Switzerland
SC
2364
SummitTX Capital
Texas
OQS
2365
Occudo Quantitative Strategies
Florida
BHCM
2366
Brevan Howard Capital Management
Jersey
CAU
2367
Caxton Associates (UK)
PAS
2368
Park Avenue Securities
New York
MCM
2369
Maytus Capital Management
New York
NSEDCP
2370
NJ State Employees Deferred Compensation Plan
New Jersey
Twin Tree Management
2371
Twin Tree Management
Texas
AAMU
2372
APG Asset Management US
New York
SMH
2373
Sanders Morris Harris
Texas
PIM
2374
Peregrine Investment Management
Ontario, Canada
MIC
2375
Mubadala Investment Company
United Arab Emirates