859 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, 333 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
859
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
BCM
876
Bayesian Capital Management
New York
OC
877
Oppenheimer & Co
New York
SSA
878
Schonfeld Strategic Advisors
New York
PCA
879
Prosperity Capital Advisors
Ohio
Connor, Clark & Lunn Investment Management (CC&L)
880
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
VCM
881
Voleon Capital Management
California
Grantham, Mayo, Van Otterloo & Co (GMO)
882
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
SB
883
Simmons Bank
Arkansas
ASN
884
Advisory Services Network
Georgia
BJL
885
Brighton Jones LLC
Washington
AWA
886
Amplius Wealth Advisors
Pennsylvania
FFG
887
Fiduciary Financial Group
California
FTWA
888
Fifth Third Wealth Advisors
Ohio
IC
889
Inscription Capital
Texas
SWTS
890
Stonehaven Wealth & Tax Solutions
Wisconsin
SOW
891
State of Wyoming
Wyoming
RG
892
Rathbones Group
United Kingdom
GCM
893
Graver Capital Management
Ohio
WIA
894
Wetzel Investment Advisors
Indiana
SFC
895
SYM Financial Corp
Indiana
CIA
896
Capital Investment Advisors
Georgia
CI Investments Inc
897
CI Investments Inc
Ontario, Canada
SIC
898
Salem Investment Counselors
North Carolina
CCA
899
Catalyst Capital Advisors
New York
Walleye Capital
900
Walleye Capital
New York