Whiting Petroleum (WLL) - Get Report shares were down more than 8% Tuesday afternoon after analysts at Goldman Sachs downgraded the stock to "sell" from "neutral" while lowering its price target to $7.25 from $11. 

Analyst Brian Singer believes that the company will probably disappoint investor's volume growth expectations due to headwinds from reduced cash flow and tighter access to capital.

The firm slashed its full year profit expectations to a loss of 54 cents per share from a loss of 48 cents per share. The firm increased its fiscal 2018 profit expectations to a loss of 32 cents per share from a loss of 37 cents per share. 

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