Notable Analyst Rating Changes 07/29: (MO) (WLL) (EVEP) Upgraded; (CTCT) (VPRT) (POT) Downgraded Jul 29, 2011 11:34AM
Morgan Keegan Upgrades Whiting Petroleum (WLL) to Outperform Jul 29, 2011 08:16AM
Notable Analyst Rating Changes 4/17: NOK, DRYS, ISRG, MHP, PH Upgraded; JPM, SOHU, BWA, PALM, ITW Downgraded Apr 17, 2009 10:14AM
Morgan Keegan Initiates Coverage on Whiting Petroleum (WLL) with an Outperform Apr 17, 2009 09:00AM