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

The 10-second takeaway
 For the quarter ended March 31 (Q1), Noranda Aluminum Holding met expectations on revenues and exceeded expectations on earnings per share.

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

Margins shrank across the board.

Revenue details
 Noranda Aluminum Holding booked revenue of $338.4 million. The five analysts polled by S&P Capital IQ expected revenue of $339.5 million 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 -$0.02. The eight earnings estimates compiled by S&P Capital IQ averaged -$0.06 per share. Non-GAAP EPS were -$0.02 for Q1 versus $0.18 per share for the prior-year quarter. GAAP EPS of $0.01 for Q1 were 96% lower than the prior-year quarter's $0.24 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 9.7%, 420 basis points worse than the prior-year quarter. Operating margin was 2.4%, 430 basis points worse than the prior-year quarter. Net margin was 0.2%, 440 basis points worse than the prior-year quarter. (Margins calculated in GAAP terms.)

Looking ahead
 Next quarter's average estimate for revenue is $357.7 million. On the bottom line, the average EPS estimate is -$0.03.

Next year's average estimate for revenue is $1.42 billion. The average EPS estimate is -$0.16.

Investor sentiment
 The stock has a three-star rating (out of five) at Motley Fool CAPS, with 38 members out of 42 rating the stock outperform, and four 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 $7.93.

Is Noranda Aluminum Holding the right metals stock for you? Find out the best way to profit from inflation and gold with a little-known company we profile in, "The Tiny Gold Stock Digging Up Massive Profits." Click here for instant access to this free report.