NEW YORK (TheStreet) --Shares of Whiting Petroleum (WLL) - Get Report are down by 5.7% to $7.11 on Monday morning, as some energy and related stocks slip today due to the retreat in the price of oil.

The commodity is trading below $40 per barrel this morning as investors doubt that talks due to be held by oil producers next month will result in a reduction in the global supply glut.

Crude oil (WTI) is declining by 1.06% to $39.04 per barrel and Brent crude is lower by 1.63% to $39.78 per barrel.

Iran and Libya are the two members of OPEC that have not agreed to attend the production freeze talks on April 17 in Doha, Qatar, Bloomberg reports.

"There's a growing realization that the meeting in Doha is not going to be effective," Thomas Finlon, director of Energy Analytics Group told Bloomberg. "The U.S. has lost about 500,000 barrels a day from its peak but the Iranians are planning to increase output by more than 1 million, so we're going to see the surplus grow."

Whiting Petroleum is a Denver-based independent oil and gas company that explores for, develops, acquires and produces crude oils and natural gas liquids.

Separately, TheStreet Ratings has set a "sell" rating and a score of D on Whiting Petroleum stock. This is driven by a few notable weaknesses, which TheStreet Ratings believes should have a greater impact than any strengths, and could make it more difficult for investors to achieve positive results compared to most of the stocks it covers.

The company's weaknesses can be seen in multiple areas, such as its generally high debt management risk, disappointing return on equity, weak operating cash flow and generally disappointing historical performance in the stock itself.

TheStreet Ratings objectively rated this stock according to its "risk-adjusted" total return prospect over a 12-month investment horizon. Not based on the news in any given day, the rating may differ from Jim Cramer's view or that of this articles's author.

You can view the full analysis from the report here: WLL

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