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Lam Research

1,796 hedge funds and large institutions have $76B invested in Lam Research in 2025 Q1 according to their latest regulatory filings, with 269 funds opening new positions, 738 increasing their positions, 547 reducing their positions, and 140 closing their positions.

New
Increased
Maintained
Reduced
Closed

92% more first-time investments, than exits

New positions opened: 269 | Existing positions closed: 140

35% more repeat investments, than reductions

Existing positions increased: 738 | Existing positions reduced: 547

35% more funds holding in top 10

Funds holding in top 10: 2331 (+8)

6% more funds holding

Funds holding: 1,6901,796 (+106)

1.06% more ownership

Funds ownership: 80.47%81.53% (+1.1%)

4% more call options, than puts

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

1% more capital invested

Capital invested by funds: $74.9B → $76B (+$1.05B)

Holders
1,796
Holders Change
+106
Holders Change %
+6.27%
% 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
738
Reduced
547
Closed
140
Calls
$1.79B
Puts
$1.72B
Net Calls
+$71.5M
Net Calls Change
+$633M
Name Holding Trade Value Shares
Change
Change in
Stake
PL
1801
Parkwood LLC
Ohio
-$10.1M -140,490 Closed
RPI
1802
Railway Pension Investments
United Kingdom
-$8.83M -122,300 Closed
Capital International Investors
1803
Capital International Investors
California
-$8.67M -120,040 Closed
MTWSIF
1804
Mivtachim The Workers Social Insurance Fund
Israel
-$8.16M -113,000 Closed
ACM
1805
Aquatic Capital Management
Illinois
-$7.76M -107,473 Closed
NI
1806
Nuance Investments
Missouri
-$7.45M -103,190 Closed
AM
1807
Atreides Management
Massachusetts
-$6.48M -89,680 Closed
Renaissance Technologies
1808
Renaissance Technologies
New York
-$6.38M -88,260 Closed
DekaBank Deutsche Girozentrale
1809
DekaBank Deutsche Girozentrale
Germany
-$54.4M -61,804 Closed
PAM
1810
Pamalican Asset Management
Hong Kong
-$4.04M -56,000 Closed
LAM
1811
LECAP Asset Management
United Kingdom
-$3.62M -50,124 Closed
4A
1812
4D Advisors
California
-$3.61M -50,000 Closed
RFM
1813
Royal Fund Management
Florida
-$3.6M -49,866 Closed
MMA
1814
Mizuho Markets Americas
New York
-$3.11M -43,000 Closed
QC
1815
Quantessence Capital
New York
-$3.03M -41,953 Closed
YIH
1816
Y-Intercept (HK)
Hong Kong
-$3.03M -41,892 Closed
SCM
1817
Sone Capital Management
New York
-$3.02M -41,785 Closed
MCC
1818
Malaga Cove Capital
California
-$2.97M -41,100 Closed
OCM
1819
Octahedron Capital Management
California
-$2.87M -39,750 Closed
EP
1820
Essential Planning
New Hampshire
-$2.92M -38,540 Closed
NA
1821
Navellier & Associates
Nevada
-$2.5M -34,600 Closed
AWA
1822
Artemis Wealth Advisors
New York
-$2.17M -30,000 Closed
RCAP
1823
Resolute Capital Asset Partners
Colorado
-$2.17M -30,000 Closed
CGPCS
1824
Capital Group Private Client Services
California
-$2.09M -28,878 Closed
CSUI
1825
Cincinnati Specialty Underwriters Insurance
Ohio
-$2.01M -27,830 Closed

LRCX Hedge Fund Activity: Q1 2025 in Review

1,796 of the 7,458 institutional investors tracked by Wall St. Rank reported a position in Lam Research (LRCX) for Q1 2025, worth a combined $76B — up 1.4% from $74.9B a quarter earlier.

Buyers outnumbered sellers: 269 funds opened new LRCX positions and 140 closed out — a net gain of 129 holders — while 738 added to existing stakes and 547 trimmed.

The largest buyer was Vanguard Group, adding an estimated $659M. The largest seller was Fisher Asset Management, cutting an estimated $1.39B.

  • 1,796 institutional investors held Lam Research (LRCX) as of Q1 2025, up from 1,690 in Q4 2024.
  • Funds reported $76B of Lam Research stock for Q1 2025, up 1.4% quarter-over-quarter.
  • 269 funds opened new Lam Research positions in Q1 2025 and 140 closed out, a net change of +129 holders.
  • The largest Lam Research buyer in Q1 2025 was Vanguard Group, an estimated $659M added.
  • The largest Lam Research seller in Q1 2025 was Fisher Asset Management, an estimated $1.39B sold.

Based on aggregated 13F filings for Q1 2025.