Brazil's state-run oil company is rising, seeing a 14.1% gain in just the past month.
The futures market points to more increases, and refinery accidents have hampered US production.
Beware promises of high yields and stick with some safer bets.
Stocks get a lift after better-than-expected retail sales figures.
These picks earn top ratings for long-term growth, dividends, quality and value.
There were negative trends in the company's second quarter. Short-term blip or signs of turbulence ahead?
Delta, United are initiated at Goldman with a 'sell,' and Tyson Foods is downgraded to 'underperform' at BofA/Merrill.
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