Under Armour (NYSE: UA) reported earnings on Jan. 31. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended Dec. 31 (Q4), Under Armour beat slightly on revenues and beat slightly on earnings per share.

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

Gross margins shrank, operating margins expanded, net margins grew.

Revenue details
 Under Armour reported revenue of $505.9 million. The 24 analysts polled by S&P Capital IQ foresaw revenue of $497.8 million on the same basis. GAAP reported sales were 25% higher than the prior-year quarter's $403.1 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 $0.47. The 27 earnings estimates compiled by S&P Capital IQ predicted $0.46 per share. GAAP EPS of $0.47 for Q4 were 52% higher than the prior-year quarter's $0.31 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 50.3%, 130 basis points worse than the prior-year quarter. Operating margin was 16.1%, 240 basis points better than the prior-year quarter. Net margin was 9.9%, 180 basis points better than the prior-year quarter.

Looking ahead
 Next quarter's average estimate for revenue is $472.2 million. On the bottom line, the average EPS estimate is $0.19.

Next year's average estimate for revenue is $2.22 billion. The average EPS estimate is $1.50.

Investor sentiment
 The stock has a three-star rating (out of five) at Motley Fool CAPS, with 2,738 members out of 2,990 rating the stock outperform, and 252 members rating it underperform. Among 979 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 932 give Under Armour a green thumbs-up, and 47 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Under Armour is hold, with an average price target of $56.20.

Selling to fickle consumers is a tough business for Under Armour or anyone else in the space. But some companies are better equipped to face the future than others. In a new report, we'll give you the rundown on three companies that are setting themselves up to dominate retail. Click here for instant access to this free report.