GNC Holdings (NYSE: GNC) is expected to report Q3 earnings around Oct. 19. 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 GNC Holdings's revenues will grow 14.8% and EPS will increase 26.1%.

The average estimate for revenue is $617.5 million. On the bottom line, the average EPS estimate is $0.58.

Revenue details
 Last quarter, GNC Holdings reported revenue of $619.1 million. GAAP reported sales were 19% higher than the prior-year quarter's $518.5 million.

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, EPS came in at $0.62. GAAP EPS of $0.62 for Q2 were 82% higher than the prior-year quarter's $0.34 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 38.7%, 190 basis points better than the prior-year quarter. Operating margin was 18.9%, 420 basis points better than the prior-year quarter. Net margin was 10.8%, 390 basis points better than the prior-year quarter.

Looking ahead

The full year's average estimate for revenue is $2.43 billion. The average EPS estimate is $2.26.

Investor sentiment
 The stock has a four-star rating (out of five) at Motley Fool CAPS, with 90 members out of 101 rating the stock outperform, and 11 members rating it underperform. Among 22 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 21 give GNC Holdings a green thumbs-up, and one give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on GNC Holdings is outperform, with an average price target of $45.43.

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