Tesoro (NYSE: TSO) is expected to report Q3 earnings on Oct. 31. 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 Tesoro's revenues will grow 5.0% and EPS will contract -7.5%.

The average estimate for revenue is $8.51 billion. On the bottom line, the average EPS estimate is $2.21.

Revenue details
Last quarter, Tesoro reported revenue of $8.11 billion. GAAP reported sales were 1.5% higher than the prior-year quarter's $7.87 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 $2.87. GAAP EPS of $2.75 for Q2 were 81% higher than the prior-year quarter's $1.52 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 10.5%, 280 basis points better than the prior-year quarter. Operating margin was 8.6%, 260 basis points better than the prior-year quarter. Net margin was 4.8%, 200 basis points better than the prior-year quarter.

Looking ahead

The full year's average estimate for revenue is $30.82 billion. The average EPS estimate is $6.44.

Investor sentiment
The stock has a three-star rating (out of five) at Motley Fool CAPS, with 914 members out of 983 rating the stock outperform, and 69 members rating it underperform. Among 276 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 254 give Tesoro a green thumbs-up, and 22 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Tesoro is outperform, with an average price target of $30.50.

Are you missing a major story in the energy space? Read about "One Stock to Own Before Nat Gas Act 2011 Becomes Law." Click here for instant access to this free report.