Grocery store stocks look set to feel the sting from Supervalu's (SVU) earnings report disaster...

|By:, SA News Editor

Grocery store stocks look set to feel the sting from Supervalu's (SVU) earnings report disaster that has sent its shares into a 31% nosedive premarket. On watch: Safeway (SWY) -3.8%, Kroger (KR) -2.2%, Winn-Dixie (WINN) inactive.