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Lam Research

1,773 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, 726 increasing their positions, 542 reducing their positions, and 138 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
1,773
Holders Change
+103
Holders Change %
+6.17%
% of All Funds
24.08%
Holding in Top 10
31
Holding in Top 10 Change
+8
Holding in Top 10 Change %
+34.78%
% of All Funds
0.42%
New
269
Increased
726
Reduced
542
Closed
138
Calls
$1.79B
Puts
$1.72B
Net Calls
+$71.5M
Net Calls Change
+$633M
Name Holding Trade Value Shares
Change
Shares
Change %
WAM
1776
Weiss Asset Management
Massachusetts
-$36.8M -510,150 Closed
Arrowstreet Capital
1777
Arrowstreet Capital
Massachusetts
-$17.1M -236,860 Closed
Walleye Trading
1778
Walleye Trading
New York
-$12M -166,048 Closed
PL
1779
Parkwood LLC
Ohio
-$10.1M -140,490 Closed
RPI
1780
Railway Pension Investments
United Kingdom
-$8.83M -122,300 Closed
Capital International Investors
1781
Capital International Investors
California
-$8.67M -120,040 Closed
MTWSIF
1782
Mivtachim The Workers Social Insurance Fund
Israel
-$8.16M -113,000 Closed
ACM
1783
Aquatic Capital Management
Illinois
-$7.76M -107,473 Closed
NI
1784
Nuance Investments
Missouri
-$7.45M -103,190 Closed
AM
1785
Atreides Management
Massachusetts
-$6.48M -89,680 Closed
Renaissance Technologies
1786
Renaissance Technologies
New York
-$6.38M -88,260 Closed
DekaBank Deutsche Girozentrale
1787
DekaBank Deutsche Girozentrale
Germany
-$54.4M -61,804 Closed
PAM
1788
Pamalican Asset Management
Hong Kong
-$4.04M -56,000 Closed
LAM
1789
LECAP Asset Management
United Kingdom
-$3.62M -50,124 Closed
4A
1790
4D Advisors
California
-$3.61M -50,000 Closed
RFM
1791
Royal Fund Management
Florida
-$3.6M -49,866 Closed
MMA
1792
Mizuho Markets Americas
New York
-$3.11M -43,000 Closed
QC
1793
Quantessence Capital
New York
-$3.03M -41,953 Closed
YIH
1794
Y-Intercept (HK)
Hong Kong
-$3.03M -41,892 Closed
SCM
1795
Sone Capital Management
New York
-$3.02M -41,785 Closed
MCC
1796
Malaga Cove Capital
California
-$2.97M -41,100 Closed
OCM
1797
Octahedron Capital Management
California
-$2.87M -39,750 Closed
EP
1798
Essential Planning
New Hampshire
-$2.92M -38,540 Closed
NA
1799
Navellier & Associates
Nevada
-$2.5M -34,600 Closed
AWA
1800
Artemis Wealth Advisors
New York
-$2.17M -30,000 Closed