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Lam Research

1,774 hedge funds and large institutions have $74.2B invested in Lam Research in 2025 Q1 according to their latest regulatory filings, with 269 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 (-$363M)

Holders
1,774
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
RCAP
1801
Resolute Capital Asset Partners
Colorado
AWA
1802
Artemis Wealth Advisors
New York
CGPCS
1803
Capital Group Private Client Services
California
CSUI
1804
Cincinnati Specialty Underwriters Insurance
Ohio
TCM
1805
Twin Capital Management
Pennsylvania
SIP
1806
Stoneridge Investment Partners
Pennsylvania
QIM
1807
Quantitative Investment Management
Virginia
SW
1808
SVB Wealth
Massachusetts
SPA
1809
Sherbrooke Park Advisers
New York
SAM
1810
Synergy Asset Management
Washington
CPCPP
1811
Canada Post Corporation Pension Plan
Canada
SCM
1812
Semanteon Capital Management
Massachusetts
PL
1813
Polianta Ltd
Jersey
HEIP
1814
Hudson Edge Investment Partners
New Jersey
LAM
1815
L2 Asset Management
Massachusetts
OTPPB
1816
Ontario Teachers' Pension Plan Board
Ontario, Canada
I
1817
InceptionR
California
KCM
1818
KRS Capital Management
Michigan
SGI
1819
Summit Global Investments
Utah
MPCA
1820
Madison Park Capital Advisors
Washington
MIC
1821
Maxi Investments CY
Cyprus
ADIM
1822
Alpha DNA Investment Management
Maryland
PTC
1823
Petrus Trust Company
Texas
AIMCA
1824
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
ONB
1825
Old National Bancorp
Indiana