NuStar Energy (NYSE: NS) is expected to report Q2 earnings on July 26. 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 NuStar Energy's revenues will contract -51.0% and EPS will grow 300.0%.

The average estimate for revenue is $932.8 million. On the bottom line, the average EPS estimate is $0.24.

Revenue details
 Last quarter, NuStar Energy recorded revenue of $999.7 million. GAAP reported sales were 38% lower than the prior-year quarter's $1.61 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, EPS came in at $0.17. GAAP EPS of $0.17 for Q1 were 26% lower than the prior-year quarter's $0.23 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 13.0%, 490 basis points better than the prior-year quarter. Operating margin was 5.9%, 220 basis points better than the prior-year quarter. Net margin was 1.3%, 30 basis points better than the prior-year quarter.

Looking ahead

The full year's average estimate for revenue is $3.88 billion. The average EPS estimate is $1.39.

Investor sentiment
 The stock has a three-star rating (out of five) at Motley Fool CAPS, with 351 members out of 369 rating the stock outperform, and 18 members rating it underperform. Among 114 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 112 give NuStar Energy a green thumbs-up, and two give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on NuStar Energy is hold, with an average price target of $49.90.

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