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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
10.7%
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
Daiwa Securities Group
176
Daiwa Securities Group
Japan
$5.55M +$136K +1,328 +2%
Nisa Investment Advisors
177
Nisa Investment Advisors
Missouri
$5.43M +$36.3K +354 +0.7%
BAM
178
Belpointe Asset Management
Nevada
$5.41M +$38.2K +373 +0.7%
Commonwealth Equity Services
179
Commonwealth Equity Services
Massachusetts
$5.39M -$2.46M -24,029 -31%
OTL
180
Oak Thistle LLC
New York
$5.31M +$5.46M +53,221 New
Neuberger Berman Group
181
Neuberger Berman Group
New York
$5.3M +$205K +2,000 +4%
IMRF
182
Illinois Municipal Retirement Fund
Illinois
$5.17M -$5.75M -56,065 -52%
Cambridge Investment Research Advisors
183
Cambridge Investment Research Advisors
Iowa
$5.15M +$299K +2,919 +6%
Millennium Management
184
Millennium Management
New York
$5.11M -$14.6M -142,512 -74%
Susquehanna International Group
185
Susquehanna International Group
Pennsylvania
$5.1M -$3.07M -29,961 -37%
DIA
186
Dean Investment Associates
Ohio
$5.01M +$132K +1,284 +3%
AB
187
Amalgamated Bank
New York
$5M -$302K -2,944 -6%
NIG
188
NFJ Investment Group
Texas
$4.99M -$476K -4,646 -9%
Focus Partners Wealth
189
Focus Partners Wealth
Massachusetts
$4.98M +$1.53M +14,902 +43%
BCIM
190
British Columbia Investment Management
British Columbia, Canada
$4.78M +$846K +8,251 +21%
GCM
191
Greenland Capital Management
New York
$4.68M +$4.81M +46,890 New
WP
192
Woodline Partners
California
$4.61M +$1.07M +10,411 +29%
FAF
193
Första AP-fonden
Sweden
$4.56M -$1.1M -10,700 -19%
NAMI
194
Nomura Asset Management International
Pennsylvania
$4.56M +$4.68M +45,666 New
URS
195
Utah Retirement Systems
Utah
$4.45M
Mirae Asset Global Investments
196
Mirae Asset Global Investments
South Korea
$4.45M +$855K +8,337 +23%
EGM
197
Engineers Gate Manager
New York
$4.34M +$4.45M +43,428 New
MSV
198
MN Services Vermogensbeheer
Netherlands
$4.28M -$646K -6,300 -13%
X
199
Xponance
Pennsylvania
$4.28M +$215K +2,099 +5%
SPI
200
Strategic Planning Inc
Ohio
$4.28M -$192K -1,872 -4%