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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
Bank of New York Mellon
26
Bank of New York Mellon
New York
$154M +$626K +6,108 +0.4%
Cohen & Steers
27
Cohen & Steers
New York
$153M -$2.14M -20,834 -1%
Jennison Associates
28
Jennison Associates
New York
$144M -$2.82M -27,488 -2%
SCP
29
Soroban Capital Partners
New York
$130M
AP
30
Antipodes Partners
Australia
$124M -$13M -127,267 -9%
DPIM
31
Duff & Phelps Investment Management
Illinois
$120M -$4.87M -47,480 -4%
UBS AM
32
UBS AM
Illinois
$115M -$13.6M -132,494 -10%
Barclays
33
Barclays
United Kingdom
$113M -$15.4M -149,798 -12%
Dimensional Fund Advisors
34
Dimensional Fund Advisors
Texas
$112M +$2.65M +25,889 +2%
WHRC
35
W.H. Reaves & Co
New Jersey
$108M +$12.4M +120,652 +13%
Deutsche Bank
36
Deutsche Bank
Germany
$98.6M +$18.7M +182,054 +23%
UBS Group
37
UBS Group
Switzerland
$97.2M +$4.49M +43,821 +5%
Caisse de Depot et Placement du Quebec (CDPQ)
38
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
$95.9M +$26.4M +257,493 +37%
Point72 Asset Management
39
Point72 Asset Management
Connecticut
$95.7M +$98.2M +958,013 New
Lazard Asset Management
40
Lazard Asset Management
New York
$93.1M +$94M +916,865 +6,051%
First Trust Advisors
41
First Trust Advisors
Illinois
$91.2M -$1.76M -17,178 -2%
Swiss National Bank
42
Swiss National Bank
Switzerland
$74M -$5.54M -54,000 -7%
ZP
43
Zimmer Partners
New York
$71.3M -$3.63M -35,400 -5%
Marshall Wace
44
Marshall Wace
United Kingdom
$69.6M -$8.43M -82,166 -11%
California Public Employees Retirement System
45
California Public Employees Retirement System
California
$68.1M -$16.9M -165,077 -19%
CCMG
46
Clark Capital Management Group
Pennsylvania
$66.6M +$68.4M +667,243 New
ACG
47
Aventail Capital Group
New York
$66.5M +$68.3M +666,389 New
AQR Capital Management
48
AQR Capital Management
Connecticut
$64.6M +$15.8M +154,086 +31%
HA
49
Homestead Advisers
Virginia
$64.4M -$9.13M -89,052 -12%
Sumitomo Mitsui Trust Group
50
Sumitomo Mitsui Trust Group
Japan
$63.6M -$2.86M -27,916 -4%