Ameren (NYSE: AEE) filed its 10-K on March 1. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended Dec. 31 (Q4), Ameren whiffed on revenues and missed estimates on earnings per share.

Compared to the prior-year quarter, revenue contracted. Non-GAAP earnings per share stayed the same. GAAP earnings per share dropped to a loss.

Margins dropped across the board.

Revenue details
 Ameren tallied revenue of $1.51 billion. The two analysts polled by S&P Capital IQ looked for sales of $1.76 billion on the same basis. GAAP reported sales were the same as the prior-year quarter's.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
 EPS came in at $0.14. The eight earnings estimates compiled by S&P Capital IQ predicted $0.15 per share. Non-GAAP EPS of $0.14 were the same as the prior-year quarter. GAAP EPS were -$4.77 for Q4 against $0.10 per share for the prior-year quarter.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Margin details
 For the quarter, gross margin was 30.0%, 280 basis points worse than the prior-year quarter. Operating margin was 9.2%, 400 basis points worse than the prior-year quarter. Net margin was -79.0%, much worse than the prior-year quarter.

Looking ahead
 Next quarter's average estimate for revenue is $1.62 billion. On the bottom line, the average EPS estimate is $0.22.

Next year's average estimate for revenue is $7.16 billion. The average EPS estimate is $2.13.

Investor sentiment
 The stock has a two-star rating (out of five) at Motley Fool CAPS, with 187 members out of 230 rating the stock outperform, and 43 members rating it underperform. Among 72 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 62 give Ameren a green thumbs-up, and 10 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Ameren is hold, with an average price target of $32.28.

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