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
Canada Pension Plan Investment Board
301
Canada Pension Plan Investment Board
Ontario, Canada
$1.46M
GIBU
302
Gulf International Bank (UK)
United Kingdom
$1.45M
SWP
303
Stratos Wealth Partners
Ohio
$1.43M
BCA
304
Bay Colony Advisors
Massachusetts
$1.41M
Jane Street
305
Jane Street
New York
$1.41M
MSRPS
306
Maryland State Retirement & Pension System
Maryland
$1.38M
LSERS
307
Louisiana State Employees Retirement System
Louisiana
$1.38M
MFWP
308
Mosaic Family Wealth Partners
Missouri
$1.37M
NP
309
Ninepoint Partners
Ontario, Canada
$1.37M
HA
310
Huntleigh Advisors
Missouri
$1.34M
PA
311
Profund Advisors
Maryland
$1.34M
OIC
312
Orion Investment Company
Missouri
$1.33M
CIA
313
Concurrent Investment Advisors
Florida
$1.33M
AC
314
Avestar Capital
New York
$1.33M
DIA
315
Dana Investment Advisors
Wisconsin
$1.33M
AV
316
Alamea Verwaltungs
New Jersey
$1.28M
BFM
317
Boothbay Fund Management
New York
$1.26M
NMERB
318
New Mexico Educational Retirement Board
New Mexico
$1.24M
ECSS
319
Eurizon Capital SGR SpA
$1.23M
FWCM
320
Ferguson Wellman Capital Management
Oregon
$1.23M
MYIA
321
Mount Yale Investment Advisors
Colorado
$1.23M
VA
322
Vident Advisory
Georgia
$1.23M
KAM
323
KEB Asset Management
Illinois
$1.22M
NB
324
Norinchukin Bank
Japan
$1.21M
IA
325
Icon Advisers
Colorado
$1.21M