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
Pacer Advisors
226
Pacer Advisors
Pennsylvania
$3.19M
NIM
227
NEOS Investment Management
Connecticut
$3.16M
OPERF
228
Oregon Public Employees Retirement Fund
Oregon
$3.09M
HWAM
229
Hennion & Walsh Asset Management
New Jersey
$3.04M
NAAA
230
New Age Alpha Advisors
New York
$2.98M
Rafferty Asset Management
231
Rafferty Asset Management
New York
$2.97M
BTC
232
Bank & Trust Company
Illinois
$2.93M
VPIM
233
Vanguard Personalized Indexing Management
California
$2.92M
KBC Group
234
KBC Group
Belgium
$2.91M
MOACM
235
Mutual of America Capital Management
New York
$2.9M
CWM
236
Cornerstone Wealth Management
Missouri
$2.88M
MA
237
Mutual Advisors
Nebraska
$2.79M
OTPPB
238
Ontario Teachers' Pension Plan Board
Ontario, Canada
$2.74M
Mercer Global Advisors
239
Mercer Global Advisors
Colorado
$2.73M
HI
240
Horizon Investments
North Carolina
$2.63M
CTC
241
Central Trust Company
Missouri
$2.6M
VI
242
Vestcor Inc
New Brunswick, Canada
$2.6M
Northwestern Mutual Wealth Management
243
Northwestern Mutual Wealth Management
Wisconsin
$2.59M
DCM
244
Dean Capital Management
Kansas
$2.58M
Public Employees Retirement Association of Colorado
245
Public Employees Retirement Association of Colorado
Colorado
$2.53M
PAM
246
Panagora Asset Management
Massachusetts
$2.53M
AI
247
Atom Investors
Texas
$2.48M
SGI
248
Summit Global Investments
Utah
$2.42M
Cerity Partners
249
Cerity Partners
New York
$2.41M
SLAM
250
Swiss Life Asset Management
$2.4M