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Lam Research

1,878 hedge funds and large institutions have $103B invested in Lam Research in 2025 Q2 according to their latest regulatory filings, with 245 funds opening new positions, 744 increasing their positions, 667 reducing their positions, and 136 closing their positions.

New
Increased
Maintained
Reduced
Closed

80% more first-time investments, than exits

New positions opened: 245 | Existing positions closed: 136

58% more funds holding in top 10

Funds holding in top 10: 3149 (+18)

35% more capital invested

Capital invested by funds: $76B → $103B (+$26.7B)

12% more repeat investments, than reductions

Existing positions increased: 744 | Existing positions reduced: 667

5% more funds holding

Funds holding: 1,7961,878 (+82)

1.01% more ownership

Funds ownership: 81.53%82.54% (+1%)

8% less call options, than puts

Call options by funds: $2.1B | Put options by funds: $2.28B

Holders
1,878
Holders Change
+82
Holders Change %
+4.57%
% of All Funds
24.73%
Holding in Top 10
49
Holding in Top 10 Change
+18
Holding in Top 10 Change %
+58.06%
% of All Funds
0.65%
New
245
Increased
744
Reduced
667
Closed
136
Calls
$2.1B
Puts
$2.28B
Net Calls
-$184M
Net Calls Change
-$255M
Name Holding Trade Value Shares
Change
Change in
Stake
AIM
1901
Aigen Investment Management
New York
-$3.31M -45,492 Closed
AFA
1902
Abacus FCF Advisors
Florida
-$3.1M -42,615 Closed
SMH
1903
Sanders Morris Harris
Texas
-$3.09M -42,420 Closed
Group One Trading
1904
Group One Trading
Illinois
-$3.31M -41,747 Closed
ACM
1905
Aster Capital Management
United Arab Emirates
-$3.07M -39,953 Closed
LCM
1906
Laurion Capital Management
New York
-$2.43M -33,419 Closed
ROP
1907
Rule One Partners
Georgia
-$2.54M -32,000 Closed
LSA
1908
L & S Advisors
California
-$2.3M -31,704 Closed
USAA
1909
United Services Automobile Association
Texas
-$2.19M -30,155 Closed
PA
1910
Paragon Advisors
Texas
-$2.08M -28,645 Closed
GMFG
1911
Greater Midwest Financial Group
Minnesota
-$1.82M -25,045 Closed
KI
1912
Keystone Investors
Singapore
-$1.8M -24,718 Closed
WAM
1913
Wolverine Asset Management
Illinois
-$1.85M -23,332 Closed
AA
1914
ABC Arbitrage
France
-$1.57M -21,549 Closed
PP
1915
PDT Partners
New York
-$1.54M -21,234 Closed
CAM
1916
CenterStar Asset Management
Illinois
-$1.66M -20,917 Closed
CCB
1917
Cutter & Co Brokerage
Missouri
-$1.48M -20,342 Closed
LHC
1918
Little House Capital
Massachusetts
-$1.4M -19,199 Closed
CICI
1919
Capital Investment Counsel Inc
North Carolina
-$1.34M -18,380 Closed
HCM
1920
Highview Capital Management
Illinois
-$1.22M -16,831 Closed
SAW
1921
Signal Advisors Wealth
Michigan
-$1.18M -16,262 Closed
AWA
1922
Alta Wealth Advisors
Massachusetts
-$1.15M -15,845 Closed
EFS
1923
Econ Financial Services
Pennsylvania
-$1.12M -15,447 Closed
IMC Chicago
1924
IMC Chicago
Illinois
-$1.14M -14,405 Closed
DTL
1925
Dynamic Technology Lab
Singapore
-$1.05M -14,394 Closed

LRCX Hedge Fund Activity: Q2 2025 in Review

1,878 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Lam Research (LRCX) for Q2 2025, worth a combined $103B — up 35% from $76B a quarter earlier.

Buyers outnumbered sellers: 245 funds opened new LRCX positions and 136 closed out — a net gain of 109 holders — while 744 added to existing stakes and 667 trimmed.

The largest buyer was JP Morgan Chase, adding an estimated $404M. The largest seller was Fidelity Investments, cutting an estimated $630M.

  • 1,878 institutional investors held Lam Research (LRCX) as of Q2 2025, up from 1,796 in Q1 2025.
  • Funds reported $103B of Lam Research stock for Q2 2025, up 35% quarter-over-quarter.
  • 245 funds opened new Lam Research positions in Q2 2025 and 136 closed out, a net change of +109 holders.
  • The largest Lam Research buyer in Q2 2025 was JP Morgan Chase, an estimated $404M added.
  • The largest Lam Research seller in Q2 2025 was Fidelity Investments, an estimated $630M sold.

Based on aggregated 13F filings for Q2 2025.