802 hedge funds and large institutions have $24B invested in Ameren in 2025 Q3 according to their latest regulatory filings, with 99 funds opening new positions, 319 increasing their positions, 225 reducing their positions, and 63 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
802
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
4
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$15.4M
Puts
$4.12M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
YCM
76
Yaupon Capital Management
New York
$28.3M
State Board of Administration of Florida Retirement System
77
State Board of Administration of Florida Retirement System
Florida
$26.1M
Adage Capital Partners
78
Adage Capital Partners
Massachusetts
$25.7M
New York State Teachers Retirement System (NYSTRS)
79
New York State Teachers Retirement System (NYSTRS)
New York
$25.4M
MAM
80
Magellan Asset Management
Australia
$23.6M
APG Asset Management
81
APG Asset Management
Netherlands
$23.2M
Macquarie Group
82
Macquarie Group
Australia
$22.5M
Raymond James Financial
83
Raymond James Financial
Florida
$22.2M
Korea Investment Corp
84
Korea Investment Corp
South Korea
$22M
Verition Fund Management
85
Verition Fund Management
Connecticut
$21.2M
NEI
86
Northwest & Ethical Investments
Ontario, Canada
$20.6M
Millennium Management
87
Millennium Management
New York
$20.2M
BSA
88
Braun Stacey Associates
New York
$19.7M
Canada Life
89
Canada Life
Manitoba, Canada
$19.2M
CB
90
Commerce Bank
Missouri
$19M
1832 Asset Management
91
1832 Asset Management
Ontario, Canada
$19M
BNP Paribas Financial Markets
92
BNP Paribas Financial Markets
France
$18.8M
Mitsubishi UFJ Trust & Banking
93
Mitsubishi UFJ Trust & Banking
Japan
$18.1M
Ensign Peak Advisors
94
Ensign Peak Advisors
Utah
$17.5M
Allspring Global Investments
95
Allspring Global Investments
North Carolina
$17.5M
SC
96
SummitTX Capital
Texas
$16.7M
Tudor Investment Corp
97
Tudor Investment Corp
Connecticut
$16.3M
SFM
98
Stack Financial Management
Montana
$16.2M
Asset Management One
99
Asset Management One
Japan
$16.2M
ELI
100
Empire Life Investments
Ontario, Canada
$16.1M