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923 hedge funds and large institutions have $25.7B invested in Ameren in 2026 Q1 according to their latest regulatory filings, with 125 funds opening new positions, 372 increasing their positions, 233 reducing their positions, and 61 closing their positions.

New
Increased
Maintained
Reduced
Closed

105% more first-time investments, than exits

New positions opened: 125 | Existing positions closed: 61

60% more repeat investments, than reductions

Existing positions increased: 372 | Existing positions reduced: 233

17% more funds holding in top 10

Funds holding in top 10: 67 (+1)

11% more capital invested

Capital invested by funds: $23.2B → $25.7B (+$2.53B)

5% more funds holding

Funds holding: 879923 (+44)

1.07% less ownership

Funds ownership: 85.71%84.64% (-1.1%)

33% less call options, than puts

Call options by funds: $12.8M | Put options by funds: $19.1M

Holders
923
Holders Change
+44
Holders Change %
+5.01%
% of All Funds
11.37%
Holding in Top 10
7
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+16.67%
% of All Funds
0.09%
New
125
Increased
372
Reduced
233
Closed
61
Calls
$12.8M
Puts
$19.1M
Net Calls
-$6.28M
Net Calls Change
+$6.75M
Name Holding Trade Value Shares
Change
Change in
Stake
BNP Paribas Financial Markets
76
BNP Paribas Financial Markets
France
$38.8M -$3.86M -36,123 -9%
Bank of Montreal
77
Bank of Montreal
Ontario, Canada
$38.7M -$635K -5,940 -2%
Korea Investment Corp
78
Korea Investment Corp
South Korea
$38.2M +$12.8M +119,770 +53%
Victory Capital Management
79
Victory Capital Management
Texas
$36M +$911K +8,522 +3%
Citigroup
80
Citigroup
New York
$35.8M -$6.23M -58,235 -15%
Principal Financial Group
81
Principal Financial Group
Iowa
$35.6M -$137K -1,284 -0.4%
California State Teachers Retirement System (CalSTRS)
82
California State Teachers Retirement System (CalSTRS)
California
$34.5M -$1.32M -12,332 -4%
ACG
83
Aventail Capital Group
New York
$34.2M -$37.9M -354,819 -53%
Russell Investments Group
84
Russell Investments Group
United Kingdom
$32.9M +$1.98M +18,510 +7%
MAM
85
Magellan Asset Management
Australia
$32.8M +$7.44M +69,553 +30%
GIA
86
Gateway Investment Advisers
Ohio
$32.2M -$5.68M -53,160 -15%
Renaissance Technologies
87
Renaissance Technologies
New York
$31.7M +$5.07M +47,400 +20%
Fidelity International
88
Fidelity International
Bermuda
$30.3M +$29.4M +275,285 New
LPL Financial
89
LPL Financial
California
$29.2M +$4.18M +39,107 +17%
VIA
90
Vanguard Investments Australia
Australia
$28.7M +$28M +261,416 New
GAM
91
Gotham Asset Management
New York
$27.7M +$6.39M +59,742 +31%
CVA
92
Ceredex Value Advisors
Florida
$27.2M -$1.22M -11,375 -4%
MF
93
Milford Funds
$27M
Verition Fund Management
94
Verition Fund Management
Connecticut
$26.8M -$4.5M -42,094 -15%
New York State Teachers Retirement System (NYSTRS)
95
New York State Teachers Retirement System (NYSTRS)
New York
$26.7M
State Board of Administration of Florida Retirement System
96
State Board of Administration of Florida Retirement System
Florida
$26.6M
Schroder Investment Management Group
97
Schroder Investment Management Group
United Kingdom
$26.5M -$4.72M -44,128 -15%
Acadian Asset Management
98
Acadian Asset Management
Massachusetts
$24.6M +$23.9M +223,994 New
Raymond James Financial
99
Raymond James Financial
Florida
$24.3M +$1.27M +11,872 +6%
MAM
100
Martingale Asset Management
Massachusetts
$22.2M +$5.51M +51,562 +34%