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Lam Research

1,775 hedge funds and large institutions have $74.2B invested in Lam Research in 2025 Q1 according to their latest regulatory filings, with 270 funds opening new positions, 727 increasing their positions, 541 reducing their positions, and 138 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 repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

4% more call options, than puts

Call options by funds: $1.79B | Put options by funds: $1.72B

0.45% less ownership

Funds ownership: 80.1%79.65% (-0.45%)

0% less capital invested

Capital invested by funds: $74.6B → $74.2B (-$361M)

Holders
1,775
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
31
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.79B
Puts
$1.72B
Net Calls
Net Calls Change

Top Buyers

1 +$608M
2 +$587M
3 +$562M
4
Coatue Management
Coatue Management
New York
+$303M
5
Citadel Advisors
Citadel Advisors
Florida
+$257M

Top Sellers

1 -$1.28B
2 -$468M
3 -$271M
4
Janus Henderson Group
Janus Henderson Group
United Kingdom
-$260M
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$234M
Name Holding Trade Value Shares
Change
Change in
Stake
RIS
1326
Retirement Income Solutions
Michigan
$313K
PWP
1327
Phillips Wealth Planners
Mississippi
$312K
RIL
1328
Rothschild Investment LLC
Illinois
$311K
SAM
1329
Sompo Asset Management
Japan
$310K
AIM
1330
Alhambra Investment Management
Florida
$310K
GS
1331
GWN Securities
Florida
$308K
TVAMP
1332
Tennessee Valley Asset Management Partners
Tennessee
$306K
TWP
1333
Triad Wealth Partners
Kansas
$305K
SIMG
1334
Sonora Investment Management Group
Arizona
$305K
MWM
1335
Mascoma Wealth Management
New Hampshire
$305K
C1AG
1336
Client 1st Advisory Group
Florida
$305K
CCA
1337
Childress Capital Advisors
Texas
$304K
EP
1338
Edgestream Partners
New Jersey
$303K
CIAS
1339
CFS Investment Advisory Services
New Jersey
$303K
CAL
1340
Capital Advisors Ltd
Ohio
$303K
AA
1341
Ancora Advisors
Ohio
$303K
FFA
1342
Florida Financial Advisors
Florida
$302K
PPWP
1343
Premier Path Wealth Partners
New Jersey
$300K
RAM
1344
Ramirez Asset Management
New York
$300K
FSC
1345
Full Sail Capital
Oklahoma
$299K
RG
1346
Rathbones Group
United Kingdom
$299K
MPM
1347
MBB Public Markets
Illinois
$297K
SMA
1348
Seven Mile Advisory
New Jersey
$296K
MAM
1349
McLean Asset Management
Virginia
$296K
FPW
1350
Fairvoy Private Wealth
Alabama
$296K