Ameren is one of the most successful companies in the Energy sector. As of the year 2018, it generated revenues of $6,177 million (1.70% year-over-year change). Reported profit was of $523.00 million. The current CEO Warner L. Baxter (Chairman, President & Chief Executive Officer) currently manages more than 8,615 employees. The company's headquarters is located in St. Louis, MO. Yes, Ameren is a Fortune 1000 company. Its current rank is top 453 US company. It has been on the list for 21 years.