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.

Seth Jayson had no position in any company mentioned here at the time of publication. You can view his stock holdings here. He is co-advisor of Motley Fool Hidden Gems, which provides new small-cap ideas every month, backed by a real-money portfolio. The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.