Noranda Aluminum Holding (NYSE: NOR) reported earnings on Oct. 24. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended Sep. 30 (Q3), Noranda Aluminum Holding beat expectations on revenues and exceeded expectations on earnings per share.

Compared to the prior-year quarter, revenue dropped significantly and GAAP earnings per share shrank significantly.

Margins dropped across the board.

Revenue details
 Noranda Aluminum Holding reported revenue of $336.8 million. The five analysts polled by S&P Capital IQ hoped for net sales of $325.8 million on the same basis. GAAP reported sales were 16% lower than the prior-year quarter's $400.4 million.

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 -$0.16. The eight earnings estimates compiled by S&P Capital IQ anticipated -$0.21 per share. GAAP EPS of $0.05 for Q3 were 89% lower than the prior-year quarter's $0.45 per share.

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 4.0%, 850 basis points worse than the prior-year quarter. Operating margin was -3.2%, 980 basis points worse than the prior-year quarter. Net margin was 1.1%, 660 basis points worse than the prior-year quarter.

Looking ahead
 Next quarter's average estimate for revenue is $329.9 million. On the bottom line, the average EPS estimate is $0.06.

Next year's average estimate for revenue is $1.38 billion. The average EPS estimate is $0.16.

Investor sentiment
 The stock has a four-star rating (out of five) at Motley Fool CAPS, with 30 members out of 32 rating the stock outperform, and two members rating it underperform. Among eight CAPS All-Star picks (recommendations by the highest-ranked CAPS members), eight give Noranda Aluminum Holding a green thumbs-up, and give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Noranda Aluminum Holding is outperform, with an average price target of $9.93.

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