The Midwest utility said adjusted Q3 EPS slipped 15% to $1.33 per share, shy of views for $1.41. Operating revenue declined 12% to $2 bil also missing. Ameren (AEE) cited higher fuel costs and regulatory pressure on rates in Illinois. It lowered its full-year adjusted EPS guidance to a range of $2.35 to $2.45, from its last forecast in August of $2.25-$2.55 per share. Analysts expect $2.46. Shares fell 3.6%.