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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
AAP
201
Arax Advisory Partners
Colorado
$4.19M -$4.18M -40,737 -49%
PFSRSONJ
202
Police & Firemen's Retirement System of New Jersey
New Jersey
$4.14M -$214K -2,091 -5%
FAM
203
Fulcrum Asset Management
United Kingdom
$4.11M +$643K +6,271 +18%
UIM
204
USS Investment Management
United Kingdom
$4.09M
HighTower Advisors
205
HighTower Advisors
Illinois
$4.09M -$235K -2,294 -5%
YCM
206
Yousif Capital Management
Michigan
$4.05M -$167K -1,624 -4%
AF
207
Allworth Financial
California
$3.92M +$621K +6,060 +18%
PF
208
Prosperitas Financial
California
$3.84M +$153K +1,493 +4%
SMDAM
209
Sumitomo Mitsui DS Asset Management
Japan
$3.81M +$88.6K +864 +2%
Osaic Holdings
210
Osaic Holdings
Arizona
$3.79M +$135K +1,314 +4%
CWM
211
CIBC World Markets
New York
$3.76M +$3.86M +37,624 New
Pathstone Holdings
212
Pathstone Holdings
New Jersey
$3.69M -$47.2K -460 -1%
NYLIM
213
New York Life Investment Management
New York
$3.69M +$39.3K +383 +1%
SPS
214
Susquehanna Portfolio Strategies
Pennsylvania
$3.65M +$3.75M +36,582 New
DADC
215
D.A. Davidson & Co
Montana
$3.65M -$19.7K -192 -0.5%
RIM
216
Rakuten Investment Management
Japan
$3.57M +$3.54M +34,480 +3,135%
Balyasny Asset Management
217
Balyasny Asset Management
Illinois
$3.56M +$3.66M +35,661 New
Mackenzie Financial
218
Mackenzie Financial
Ontario, Canada
$3.56M +$398K +3,884 +12%
MML Investors Services
219
MML Investors Services
Massachusetts
$3.53M +$1.48M +14,409 +69%
HAI
220
Hennessy Advisors Inc
California
$3.5M -$103K -1,000 -3%
NS
221
NBC Securities
Alabama
$3.49M -$21.2K -207 -0.6%
NAM
222
Nissay Asset Management
Japan
$3.46M -$71.6K -698 -2%
DekaBank Deutsche Girozentrale
223
DekaBank Deutsche Girozentrale
Germany
$3.4M
JFG
224
Jefferies Financial Group
New York
$3.33M -$1.36M -13,271 -28%
BAMF
225
BI Asset Management Fondsmaeglerselskab
Denmark
$3.29M -$564K -5,497 -14%