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Lam Research

1,777 hedge funds and large institutions have $74.3B invested in Lam Research in 2025 Q1 according to their latest regulatory filings, with 270 funds opening new positions, 728 increasing their positions, 542 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

0.42% less ownership

Funds ownership: 80.1%79.68% (-0.42%)

0% less capital invested

Capital invested by funds: $74.6B → $74.3B (-$333M)

Holders
1,777
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
51
$231M
52
$229M
53
$227M
54
$222M
55
$220M
56
$210M
57
$203M
58
$200M
59
$197M
60
$196M
61
$196M
62
$189M
63
$189M
64
$187M
65
$174M
66
$173M
67
$171M
68
$166M
69
$162M
70
$160M
71
$159M
72
$158M
73
$157M
74
$148M
75
$144M