Based on the aggregated intelligence of 180,000-plus investors participating in Motley Fool CAPS, the Fool's free investing community, South American oil giant Petroleo Brasileiro (NYSE: PBR) has earned a respected four-star ranking.

With that in mind, let's take a closer look at Petrobras' business and see what CAPS investors are saying about the stock right now.

Petrobras facts

Founded Rio de Janeiro (1953)
Market Cap $121.8 million
Industry Integrated oil and gas
Trailing-12-Month Revenue $138.7 billion
Management CEO Maria das Gracas Silva Foster (since February 2012)
CFO Almir Guilherme Barbassa (since July 2005)
Return on Equity (average, past 3 years) 15.4%
Cash/Debt $31.8 billion / $90.1 billion
Dividend Yield 1.2%
Competitors BP
Chevron
ExxonMobil

Sources: S&P Capital IQ and Motley Fool CAPS.

On CAPS, 98% of the 4,273 members who have rated Petrobras believe the stock will outperform the S&P 500 going forward.   

Just yesterday, one of those bulls, All-Star BlacknGold, tapped Petrobras as a particularly timely bargain opportunity:

The company is trading at a severe discount to fair book value. ... Oil is down right now and this company hasn't been a great one to own for the last several years, but most of the high hopes were priced in while it was overvalued. Now that some of the funny money is gone the company is undervalued. I swear I'll never understand why this happens, but [Petrobras] is looking pretty good at these levels.

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