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Fortinet

1,237 hedge funds and large institutions have $40.1B invested in Fortinet in 2025 Q3 according to their latest regulatory filings, with 135 funds opening new positions, 433 increasing their positions, 509 reducing their positions, and 222 closing their positions.

New
Increased
Maintained
Reduced
Closed

less ownership

Funds ownership:

less funds holding

Funds holding:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less call options, than puts

Call options by funds: $ | Put options by funds: $

26% less capital invested

Capital invested by funds: $54.2B → $40.1B (-$14.1B)

39% less first-time investments, than exits

New positions opened: 135 | Existing positions closed: 222

45% less funds holding in top 10

Funds holding in top 10: 2212 (-10)

Holders
1,237
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
12
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$719M
Puts
$893M
Net Calls
Net Calls Change

Top Buyers

1 +$243M
2 +$179M
3 +$151M
4
Invesco
Invesco
Georgia
+$132M
5
Deutsche Bank
Deutsche Bank
Germany
+$127M
Name Holding Trade Value Shares
Change
Change in
Stake
William Blair & Company
201
William Blair & Company
Illinois
$15.7M
Mariner
202
Mariner
Kansas
$15.7M
NAM
203
Nissay Asset Management
Japan
$15.7M
BWP
204
Barlow Wealth Partners
Kentucky
$15.6M
GAM
205
Gotham Asset Management
New York
$15.6M
WIC
206
Willis Investment Counsel
Georgia
$15.4M
DnB Asset Management
207
DnB Asset Management
Norway
$14.4M
BWFA
208
Baltimore-Washington Financial Advisors
Maryland
$14.3M
Walleye Trading
209
Walleye Trading
New York
$14.2M
CNB
210
Czech National Bank
Czech Republic
$13.9M
SG Americas Securities
211
SG Americas Securities
New York
$13.5M
Lido Advisors
212
Lido Advisors
California
$13.5M
State of Tennessee, Department of Treasury
213
State of Tennessee, Department of Treasury
Tennessee
$13.5M
TI
214
Trexquant Investment
Connecticut
$13.3M
Teacher Retirement System of Texas
215
Teacher Retirement System of Texas
Texas
$13.2M
PAM
216
Peak Asset Management
Colorado
$13.2M
IMPI
217
Ilmarinen Mutual Pension Insurance
Finland
$13.2M
COPPSERS
218
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$13.2M
WIC
219
Wilkins Investment Counsel
Massachusetts
$13.1M
X
220
Xponance
Pennsylvania
$13.1M
GFM
221
GF Fund Management
China
$12.8M
IC
222
IEQ Capital
California
$12.8M
Thrivent Financial for Lutherans
223
Thrivent Financial for Lutherans
Minnesota
$12.8M
AB
224
Amalgamated Bank
New York
$12.7M
SO
225
STRS Ohio
Ohio
$12.6M