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879 hedge funds and large institutions have $23.2B invested in Ameren in 2025 Q4 according to their latest regulatory filings, with 142 funds opening new positions, 336 increasing their positions, 238 reducing their positions, and 70 closing their positions.

New
Increased
Maintained
Reduced
Closed

103% more first-time investments, than exits

New positions opened: 142 | Existing positions closed: 70

50% more funds holding in top 10

Funds holding in top 10: 46 (+2)

41% more repeat investments, than reductions

Existing positions increased: 336 | Existing positions reduced: 238

7% more funds holding

Funds holding: 823879 (+56)

0.45% more ownership

Funds ownership: 85.26%85.71% (+0.45%)

4% less capital invested

Capital invested by funds: $24.1B → $23.2B (-$905M)

40% less call options, than puts

Call options by funds: $19.8M | Put options by funds: $32.8M

Holders
879
Holders Change
+56
Holders Change %
+6.8%
% of All Funds
10.69%
Holding in Top 10
6
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+50%
% of All Funds
0.07%
New
142
Increased
336
Reduced
238
Closed
70
Calls
$19.8M
Puts
$32.8M
Net Calls
-$13M
Net Calls Change
-$24.3M
Name Holding Trade Value Shares
Change
Change in
Stake
Jones Financial Companies
151
Jones Financial Companies
Missouri
$8.27M +$761K +7,425 +10%
BEI
152
Benjamin Edwards Inc
Missouri
$8.25M +$545K +5,314 +7%
Natixis Advisors
153
Natixis Advisors
Massachusetts
$7.77M +$1.22M +11,917 +18%
ASRS
154
Arizona State Retirement System
Arizona
$7.41M -$736K -7,181 -9%
PCM
155
Polymer Capital Management
New York
$7.21M -$6.95M -67,775 -48%
Ensign Peak Advisors
156
Ensign Peak Advisors
Utah
$7.19M -$9.83M -95,892 -57%
CNB
157
Czech National Bank
Czech Republic
$7.12M +$270K +2,636 +4%
Wealthfront Advisers
158
Wealthfront Advisers
California
$7.09M +$332K +3,234 +5%
SOMRS
159
State of Michigan Retirement System
Michigan
$7.07M -$236K -2,300 -3%
MMA
160
Mizuho Markets Americas
New York
$6.99M +$7.18M +70,000 New
Public Sector Pension Investment Board (PSP Investments)
161
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$6.9M +$1.05M +10,225 +17%
Robeco Institutional Asset Management
162
Robeco Institutional Asset Management
Netherlands
$6.8M +$6.99M +68,144 New
ProShare Advisors
163
ProShare Advisors
Maryland
$6.65M +$1.96M +19,095 +40%
Comerica Bank
164
Comerica Bank
Texas
$6.51M -$268K -2,615 -4%
MIM
165
MetLife Investment Management
New Jersey
$6.47M -$231K -2,251 -3%
VOYA Investment Management
166
VOYA Investment Management
Georgia
$6.33M -$571K -5,572 -8%
PNC Financial Services Group
167
PNC Financial Services Group
Pennsylvania
$6.09M +$170K +1,656 +3%
Mariner
168
Mariner
Kansas
$6.08M +$133K +1,300 +2%
RAM
169
RWC Asset Management
United Kingdom
$6.05M -$414K -4,033 -6%
BPAMU
170
BTG Pactual Asset Management US
New York
$6.01M -$1.86M -18,145 -23%
First Manhattan
171
First Manhattan
New York
$6M -$330K -3,220 -5%
Stifel Financial
172
Stifel Financial
Missouri
$5.96M -$1.13K -11 -0%
II
173
IFM Investors
Australia
$5.95M +$216K +2,106 +4%
Retirement Systems of Alabama
174
Retirement Systems of Alabama
Alabama
$5.75M -$14.3K -139 -0.2%
QCM
175
QRG Capital Management
Illinois
$5.6M +$190K +1,854 +3%