Ameren

Ameren

Multi-Utilities
Ameren owns rate-regulated generation, transmission, and distribution networks that deliver electricity and natural gas through the company's two main subsidiaries, Ameren Missouri and Ameren Illinois. It serves 2.5 million electricity customers and 800,000 natural gas customers across its two service territories.

$27.7B

Market Cap • 1/23/2026

1997

(29 years)

Founded

1984

(42 years ago)

IPO

NYSE

Listing Exchange

Flag of United States

United States

Country

S&P500 Participant

Index Composite • 2026