811 hedge funds and large institutions have $24.1B invested in Ameren in 2025 Q3 according to their latest regulatory filings, with 97 funds opening new positions, 326 increasing their positions, 228 reducing their positions, and 65 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
811
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
IAIM
326
International Assets Investment Management
Florida
$1.09M
MCM
327
MAI Capital Management
Ohio
$1.08M
CBT
328
Central Bank & Trust
Kentucky
$1.08M
Nomura Holdings
329
Nomura Holdings
Japan
$1.07M
RRA
330
Round Rock Advisors
Connecticut
$1.06M
AC
331
Allstate Corporation
Illinois
$1.05M
IWC
332
Integrated Wealth Concepts
Massachusetts
$1.05M
TIAA Trust, National Association
333
TIAA Trust, National Association
North Carolina
$1.04M
NSIM
334
North Star Investment Management
Illinois
$1.03M
GI
335
GAMMA Investing
California
$1.03M
OAM
336
Ostrum Asset Management
France
$1.02M
Walleye Trading
337
Walleye Trading
New York
$1.02M
Truist Financial
338
Truist Financial
North Carolina
$1.01M
EI
339
Ethic Inc
New York
$1M
AV
340
Alamea Verwaltungs
New Jersey
$998K
JCM
341
Jag Capital Management
Missouri
$995K
OAC
342
OMERS Administration Corp
Ontario, Canada
$988K
TMAM
343
Tokio Marine Asset Management
Japan
$987K
EF
344
Empowered Funds
Pennsylvania
$986K
AIM
345
Acropolis Investment Management
Missouri
$984K
EF
346
Empirical Finance
Pennsylvania
$964K
MFG
347
Merit Financial Group
Georgia
$962K
MA
348
Maxele Advisors
Missouri
$959K
PFBT
349
Parkside Financial Bank & Trust
Missouri
$958K
MGP
350
Metis Global Partners
California
$952K