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Lam Research

1,793 hedge funds and large institutions have $74.4B invested in Lam Research in 2025 Q1 according to their latest regulatory filings, with 269 funds opening new positions, 737 increasing their positions, 545 reducing their positions, and 140 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding in top 10

Funds holding in top 10:

more funds holding

Funds holding:

4% more call options, than puts

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

0.54% less ownership

Funds ownership: 80.41%79.87% (-0.54%)

1% less capital invested

Capital invested by funds: $74.9B → $74.4B (-$445M)

Holders
1,793
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 +$659M
2 +$636M
3 +$622M
4
Coatue Management
Coatue Management
New York
+$328M
5
Citadel Advisors
Citadel Advisors
Florida
+$278M

Top Sellers

1 -$1.39B
2 -$507M
3 -$294M
4
Janus Henderson Group
Janus Henderson Group
United Kingdom
-$282M
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$254M
Name Holding Trade Value Shares
Change
Change in
Stake
1326
$318K
1327
$318K
1328
$318K
1329
$318K
1330
$317K
1331
$317K
1332
$315K
1333
$315K
1334
$315K
1335
$314K
1336
$314K
1337
$313K
1338
$313K
1339
$312K
1340
$311K
1341
$310K
1342
$310K
1343
$308K
1344
$306K
1345
$305K
1346
$305K
1347
$305K
1348
$305K
1349
$304K
1350
$303K