Walgreen (NYSE: WAG) is expected to report Q4 earnings on Sep. 28. Here's what Wall Street wants to see:

The 10-second takeaway
 Comparing the upcoming quarter to the prior-year quarter, average analyst estimates predict Walgreen's revenues will compress -4.5% and EPS will wane -1.8%.

The average estimate for revenue is $17.16 billion. On the bottom line, the average EPS estimate is $0.56.

Revenue details
 Last quarter, Walgreen reported revenue of $17.77 billion. GAAP reported sales were 3.4% lower than the prior-year quarter's $18.37 billion.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
 Last quarter, non-GAAP EPS came in at $0.63. GAAP EPS of $0.62 for Q3 were 4.6% lower than the prior-year quarter's $0.65 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Recent performance
 For the preceding quarter, gross margin was 28.2%, 10 basis points better than the prior-year quarter. Operating margin was 4.9%, 50 basis points worse than the prior-year quarter. Net margin was 3.0%, 30 basis points worse than the prior-year quarter.

Looking ahead

The full year's average estimate for revenue is $71.66 billion. The average EPS estimate is $2.59.

Investor sentiment
 The stock has a three-star rating (out of five) at Motley Fool CAPS, with 2,097 members out of 2,243 rating the stock outperform, and 146 members rating it underperform. Among 516 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 486 give Walgreen a green thumbs-up, and 30 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Walgreen is hold, with an average price target of $36.42.

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