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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
Vontobel Holding
251
Vontobel Holding
Switzerland
$28.3M -$3.87M -48,841 -14%
ACM
252
Aquatic Capital Management
Illinois
$27.7M +$22.6M +284,732 New
ADEF
253
Adams Diversified Equity Fund
Maryland
$27.6M
SSCM
254
Summit Street Capital Management
New York
$27.6M -$1.13M -14,220 -5%
Rockefeller Capital Management
255
Rockefeller Capital Management
New York
$27.3M +$2.55M +32,107 +13%
TAM
256
Talos Asset Management
New York
$27.2M +$5.46M +68,834 +33%
AB
257
Amalgamated Bank
New York
$27.1M +$453K +5,710 +2%
VF
258
Vest Financial
Virginia
$27M +$10.6M +133,993 +93%
Retirement Systems of Alabama
259
Retirement Systems of Alabama
Alabama
$26.7M -$109K -1,372 -0.5%
AssetMark Inc
260
AssetMark Inc
California
$26.3M -$7.83M -98,706 -27%
MGIA
261
Moneta Group Investment Advisors
Missouri
$26M -$180K -2,273 -0.8%
WA
262
Wealth Architects
California
$25.6M -$78.4K -989 -0.4%
CIBC World Market
263
CIBC World Market
Ontario, Canada
$25.6M +$5.44M +68,594 +35%
DDPIC
264
Deroy & Devereaux Private Investment Counsel
Michigan
$25.6M +$10.4K +131 +0%
EF
265
Empowered Funds
Pennsylvania
$25.4M +$5.83M +73,544 +39%
Pathstone Holdings
266
Pathstone Holdings
New Jersey
$25.1M -$972K -12,254 -5%
II
267
IFM Investors
Australia
$24.9M +$515K +6,495 +3%
BSA
268
Braun Stacey Associates
New York
$24.8M -$3.53M -44,555 -15%
GFM
269
GF Fund Management
China
$24.8M +$512K +6,459 +3%
Osaic Holdings
270
Osaic Holdings
Arizona
$24.7M +$1.55M +19,495 +8%
CWM
271
CIBC World Markets
New York
$24.6M +$7.72M +97,296 +63%
PCM
272
Penserra Capital Management
California
$24.4M +$453K +5,713 +2%
CAM
273
Capco Asset Management
Florida
$24.3M -$40.3K -508 -0.2%
Verition Fund Management
274
Verition Fund Management
Connecticut
$24M -$33.8M -426,555 -63%
UM
275
UniSuper Management
Australia
$24M -$774K -9,755 -4%

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.