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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
DB
126
Danske Bank
Denmark
$69.3M +$1.03M +13,105 +1%
Robeco Institutional Asset Management
127
Robeco Institutional Asset Management
Netherlands
$69.2M +$695K +8,825 +0.9%
Mariner
128
Mariner
Kansas
$69.1M +$1.82M +23,155 +2%
Korea Investment Corp
129
Korea Investment Corp
South Korea
$68.3M -$6.91M -87,770 -9%
Aberdeen Group
130
Aberdeen Group
United Kingdom
$67.9M -$28.6M -362,569 -28%
NC
131
NZS Capital
Colorado
$67.7M -$1.15M -14,613 -2%
Fisher Asset Management
132
Fisher Asset Management
Washington
$66.8M -$1.39B -17,659,058 -95%
CVA
133
Ceredex Value Advisors
Florida
$66.4M +$27.7M +351,440 +63%
AQR Capital Management
134
AQR Capital Management
Connecticut
$64.5M +$27.7M +352,264 +63%
WorldQuant Millennium Advisors
135
WorldQuant Millennium Advisors
New York
$63.6M -$20.1M -255,391 -23%
GT
136
Glenmede Trust
Pennsylvania
$63.5M -$541K -6,868 -0.8%
SSA
137
Schonfeld Strategic Advisors
New York
$63.3M +$35.2M +447,401 +106%
Mitsubishi UFJ Trust & Banking
138
Mitsubishi UFJ Trust & Banking
Japan
$63.2M -$4.19M -53,182 -6%
Assenagon Asset Management
139
Assenagon Asset Management
Luxembourg
$63.1M -$123M -1,563,839 -64%
State of Wisconsin Investment Board
140
State of Wisconsin Investment Board
Wisconsin
$61.9M +$2.3M +29,151 +4%
Marshall Wace
141
Marshall Wace
United Kingdom
$61.5M +$66.7M +846,462 New
Jennison Associates
142
Jennison Associates
New York
$61.4M -$2.47M -31,396 -4%
AIM
143
Achmea Investment Management
Netherlands
$61.4M +$45.2M +574,561 +213%
Public Sector Pension Investment Board (PSP Investments)
144
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$61.2M +$51.7M +656,751 +355%
CS
145
Candriam SCA
Luxembourg
$60.6M +$11.7M +148,202 +22%
PAM
146
Panagora Asset Management
Massachusetts
$59.7M -$114M -1,449,860 -64%
KBC Group
147
KBC Group
Belgium
$58.2M -$44.9M -570,359 -42%
GC
148
Guggenheim Capital
Illinois
$58.2M -$4.23M -53,709 -6%
ClearBridge Investments
149
ClearBridge Investments
New York
$56.2M +$27.7M +351,821 +83%
Parnassus Investments
150
Parnassus Investments
California
$56.2M -$5.91M -75,025 -9%

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.