Costco (Nasdaq: COST) reported earnings on Dec. 12. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended Nov. 25 (Q1), Costco beat slightly on revenues and beat slightly on earnings per share.

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

Margins increased across the board.

Revenue details
 Costco notched revenue of $23.72 billion. The 15 analysts polled by S&P Capital IQ expected to see a top line of $23.44 billion on the same basis. GAAP reported sales were 9.6% higher than the prior-year quarter's $21.63 billion.

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 $0.95. The 21 earnings estimates compiled by S&P Capital IQ forecast $0.93 per share. GAAP EPS of $0.95 for Q1 were 30% higher than the prior-year quarter's $0.73 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 12.6%, 10 basis points better than the prior-year quarter. Operating margin was 2.7%, 20 basis points better than the prior-year quarter. Net margin was 1.8%, 30 basis points better than the prior-year quarter.

Looking ahead
 Next quarter's average estimate for revenue is $24.92 billion. On the bottom line, the average EPS estimate is $1.06.

Next year's average estimate for revenue is $106.08 billion. The average EPS estimate is $4.48.

Investor sentiment
 The stock has a five-star rating (out of five) at Motley Fool CAPS, with 4,432 members out of 4,590 rating the stock outperform, and 158 members rating it underperform. Among 1,303 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 1,276 give Costco a green thumbs-up, and 27 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Costco is outperform, with an average price target of $103.41.

Looking for alternatives to Costco? It takes more than great companies to build a fortune for the future. Learn the basic financial habits of millionaires next door and get focused stock ideas in our free report, "3 Stocks That Will Help You Retire Rich." Click here for instant access to this free report.