Shares of Roundy's (RNDY) slip 22.5% in premarket trading after the grocery store chain misses...

|About: Roundy's Supermarkets, Inc (RNDY)|By:, SA News Editor

Shares of Roundy's (RNDY) slip 22.5% in premarket trading after the grocery store chain misses earnings estimates by a penny in Q2 and lowers its forecast for the year. CEO Robert Mariano warns of an increasingly "price-conscious" consumer and pricing pressure in major markets.