BofA Merrill to upgrade shares to Buy from Neutral.The firm says the approval to release the results should remove a major overhang and allow the company to start reducing debt levels and restoring cash flow; the company now has the potential to show significant improvement in its financial position over the next two years[/b], BofA says.In recent days, the stock has been helped by news that it may sell some of its valuable deepwater assets as part of its divestment plan as well as selling a stake in chemical maker Braskem.
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