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Lam Research

2,610 hedge funds and large institutions have $215B invested in Lam Research in 2026 Q1 according to their latest regulatory filings, with 394 funds opening new positions, 888 increasing their positions, 1,062 reducing their positions, and 105 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

5% less call options, than puts

Call options by funds: $4.46B | Put options by funds: $4.68B

3.41% less ownership

Funds ownership: 84.35%80.94% (-3.4%)

16% less repeat investments, than reductions

Existing positions increased: 888 | Existing positions reduced: 1,062

Holders
2,610
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
139
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$4.46B
Puts
$4.68B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
Calamos Advisors
226
Calamos Advisors
Illinois
$88.3M
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
227
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$87.3M
ClearBridge Investments
228
ClearBridge Investments
New York
$86.4M
CIBC World Market
229
CIBC World Market
Ontario, Canada
$84.3M
US Bancorp
230
US Bancorp
Minnesota
$83.2M
Commonwealth Equity Services
231
Commonwealth Equity Services
Massachusetts
$83.1M
CI Investments Inc
232
CI Investments Inc
Ontario, Canada
$82.8M
FLPIM
233
F.L. Putnam Investment Management
Massachusetts
$82.3M
AIP
234
ARS Investment Partners
New York
$82.3M
MIF
235
Mediolanum International Funds
Ireland
$82.2M
AL
236
Appaloosa LP
New Jersey
$81.7M
Vontobel Holding
237
Vontobel Holding
Switzerland
$81.7M
BBVA
238
Banco Bilbao Vizcaya Argentaria
Spain
$81M
MNA
239
Manning & Napier Advisors
New York
$80.8M
Cetera Investment Advisers
240
Cetera Investment Advisers
Illinois
$80.7M
X
241
Xponance
Pennsylvania
$79.6M
CC
242
Cartenna Capital
Connecticut
$78M
SOMRS
243
State of Michigan Retirement System
Michigan
$77.3M
Fisher Asset Management
244
Fisher Asset Management
Washington
$76.8M
NW
245
NewEdge Wealth
Pennsylvania
$76.1M
Fifth Third Bancorp
246
Fifth Third Bancorp
Ohio
$75.6M
Janney Montgomery Scott
247
Janney Montgomery Scott
Pennsylvania
$75.4M
Public Employees Retirement Association of Colorado
248
Public Employees Retirement Association of Colorado
Colorado
$75M
EF
249
Empowered Funds
Pennsylvania
$74.8M
MIM
250
MetLife Investment Management
New Jersey
$74.5M