861 hedge funds and large institutions have $23.1B invested in Ameren in 2025 Q4 according to their latest regulatory filings, with 131 funds opening new positions, 334 increasing their positions, 235 reducing their positions, and 70 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

0.26% more ownership

Funds ownership: 85.26%85.52% (+0.26%)

4% less capital invested

Capital invested by funds: $24.1B → $23.1B (-$955M)

40% less call options, than puts

Call options by funds: $19.8M | Put options by funds: $32.8M

Holders
861
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
6
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$19.8M
Puts
$32.8M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
MC
876
Machina Capital
France
JF
877
Jump Financial
Illinois
BCM
878
Bayesian Capital Management
New York
OC
879
Oppenheimer & Co
New York
SSA
880
Schonfeld Strategic Advisors
New York
PCA
881
Prosperity Capital Advisors
Ohio
Connor, Clark & Lunn Investment Management (CC&L)
882
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
VCM
883
Voleon Capital Management
California
Grantham, Mayo, Van Otterloo & Co (GMO)
884
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
SB
885
Simmons Bank
Arkansas
ASN
886
Advisory Services Network
Georgia
BJL
887
Brighton Jones LLC
Washington
AWA
888
Amplius Wealth Advisors
Pennsylvania
FFG
889
Fiduciary Financial Group
California
FTWA
890
Fifth Third Wealth Advisors
Ohio
IC
891
Inscription Capital
Texas
SWTS
892
Stonehaven Wealth & Tax Solutions
Wisconsin
SOW
893
State of Wyoming
Wyoming
RG
894
Rathbones Group
United Kingdom
GCM
895
Graver Capital Management
Ohio
WIA
896
Wetzel Investment Advisors
Indiana
SFC
897
SYM Financial Corp
Indiana
CIA
898
Capital Investment Advisors
Georgia
CI Investments Inc
899
CI Investments Inc
Ontario, Canada
SIC
900
Salem Investment Counselors
North Carolina