798 hedge funds and large institutions have $22.3B invested in Ameren in 2025 Q1 according to their latest regulatory filings, with 136 funds opening new positions, 311 increasing their positions, 209 reducing their positions, and 55 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
798
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
7
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$12.5M
Puts
$11.4M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
GF
51
Gabelli Funds
New York
$49.7M
Mitsubishi UFJ Asset Management
52
Mitsubishi UFJ Asset Management
Japan
$48.4M
RhumbLine Advisers
53
RhumbLine Advisers
Massachusetts
$46.3M
Bank of Montreal
54
Bank of Montreal
Ontario, Canada
$44.5M
HSBC Holdings
55
HSBC Holdings
United Kingdom
$43.5M
Royal Bank of Canada
56
Royal Bank of Canada
Ontario, Canada
$41.4M
BNP Paribas Financial Markets
57
BNP Paribas Financial Markets
France
$38.9M
GIA
58
Gateway Investment Advisers
Ohio
$38.9M
Citigroup
59
Citigroup
New York
$34.5M
Hudson Bay Capital Management
60
Hudson Bay Capital Management
Connecticut
$33.8M
National Pension Service
61
National Pension Service
South Korea
$33.1M
Principal Financial Group
62
Principal Financial Group
Iowa
$33.1M
California State Teachers Retirement System (CalSTRS)
63
California State Teachers Retirement System (CalSTRS)
California
$31.7M
Schroder Investment Management Group
64
Schroder Investment Management Group
United Kingdom
$31.5M
CIBC Private Wealth Group
65
CIBC Private Wealth Group
Georgia
$30.7M
Amundi
66
Amundi
France
$29.9M
SEI Investments
67
SEI Investments
Pennsylvania
$29.8M
National Bank of Canada
68
National Bank of Canada
Quebec, Canada
$28M
Canada Pension Plan Investment Board
69
Canada Pension Plan Investment Board
Ontario, Canada
$27.4M
Jane Street
70
Jane Street
New York
$26.6M
YCM
71
Yaupon Capital Management
New York
$25.7M
State Board of Administration of Florida Retirement System
72
State Board of Administration of Florida Retirement System
Florida
$25.3M
New York State Teachers Retirement System (NYSTRS)
73
New York State Teachers Retirement System (NYSTRS)
New York
$24.4M
Raymond James Financial
74
Raymond James Financial
Florida
$23.9M
Russell Investments Group
75
Russell Investments Group
United Kingdom
$21.8M