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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
76
$143M
77
$143M
78
$140M
79
$139M
80
$139M
81
$139M
82
$138M
83
$136M
84
$134M
85
$134M
86
$126M
87
$124M
88
$122M
89
$119M
90
$117M
91
$116M
92
$114M
93
$113M
94
$112M
95
$108M
96
$103M
97
$103M
98
$102M
99
$96.4M
100
$95.9M