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
Teacher Retirement System of Texas
201
Teacher Retirement System of Texas
Texas
$3.77M
HAI
202
Hennessy Advisors Inc
California
$3.77M
WP
203
Woodline Partners
California
$3.73M
Osaic Holdings
204
Osaic Holdings
Arizona
$3.7M
NAM
205
Nissay Asset Management
Japan
$3.69M
NS
206
NBC Securities
Alabama
$3.67M
Focus Partners Wealth
207
Focus Partners Wealth
Massachusetts
$3.66M
SOADOR
208
State of Alaska Department of Revenue
Alaska
$3.62M
Man Group
209
Man Group
United Kingdom
$3.61M
FAM
210
Fulcrum Asset Management
United Kingdom
$3.6M
SGI
211
Summit Global Investments
Utah
$3.59M
Bank of Nova Scotia
212
Bank of Nova Scotia
Ontario, Canada
$3.5M
Mackenzie Financial
213
Mackenzie Financial
Ontario, Canada
$3.29M
OPERF
214
Oregon Public Employees Retirement Fund
Oregon
$3.23M
SW
215
SteelPeak Wealth
California
$3.1M
MOACM
216
Mutual of America Capital Management
New York
$3.06M
BTC
217
Bank & Trust Company
Illinois
$3.06M
NAAA
218
New Age Alpha Advisors
New York
$3.04M
RC
219
Resolution Capital
Australia
$3.01M
Rafferty Asset Management
220
Rafferty Asset Management
New York
$2.97M
VPIM
221
Vanguard Personalized Indexing Management
California
$2.96M
OQS
222
Occudo Quantitative Strategies
Florida
$2.93M
CTC
223
Central Trust Company
Missouri
$2.91M
Northwestern Mutual Wealth Management
224
Northwestern Mutual Wealth Management
Wisconsin
$2.86M
CIBC World Market
225
CIBC World Market
Ontario, Canada
$2.83M