Ameren is a public utility holding company, generating and distributing electricity and natural gas to 2.2m customers in Missouri and Illinois. The group conducts its business through its primary subsidiaries: Union Electric Company, Central Illinois Public Service Company, AmerenEnergy Resources Company, AmerenEnergy, Electric Energy and Ameren Services Company.
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| ISIN: | US0236081024 |
| Main Indices: | S&P 500 |