Global Hunter Securities Upgrades Basic Energy Services (BAS) to Buy April 26, 2013 8:08 AM EDT http://www.streetinsider.com/Upgrades/Global+Hunter+Securities+Upgrades+Basic+Energy+Services+%28BAS%29+to+Buy/8281578.html Global Hunter Securities upgraded Basic Energy Services (NYSE: BAS) from Accumulate to Buy with a price target of $18.00 (unchanged).