In the same period a year ago, the company posted earnings of 62 cents a share on sales of $1.6 billion.
The stock has risen 5.3% since the company last reported earnings on Feb. 14.
Quarterly estimates have risen 6.6 cents a share in the past month.
Ameren is currently trading at a price-to-forward-earnings ratio of 21.5 based on the 12-month estimates of 10 analysts surveyed by FactSet.
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