Benzinga's Top #PreMarket Losers

iRobot Corporation IRBT shares fell 10.48% to $28.61 in pre-market trading after the company met first-quarter expectations, but offered an outlook below consensus views. Keurig Green Mountain, Inc. GMCR shares declined 10.07% to $109.00 in pre-market trading after the company reported downbeat first-quarter results and issued a disappointing outlook. Michael Kors Holdings Limited KORS shares dropped 6.47% to $66.76 in pre-market trading after the company issued a downbeat forecast. However, the company reported better-than-expected earnings for its fiscal third quarter. Prudential Financial Inc PRU shares dropped 4.87% to $76.00 in pre-market trading on downbeat quarterly adjusted profit. Twenty-First Century Fox, Inc. FOXA fell 4.47% to $33.11 in pre-market trading. Twenty-First Century Fox reported upbeat quarterly results and raised its dividend. However, the company lowered its guidance for the year