Benzinga's Top #PreMarket Losers

SINA Corporation SINA shares declined 5.09% to $35.60 in pre-market trading. China is threatening to shutdown news service of Sina Weibo for not censoring and filtering false information. Symantec Corporation SYMC shares dropped 4.18% to $24.51 in pre-market. Symantec may be considering a sale of its Veritas unit, according to Dow Jones. Extreme Networks Inc. EXTR slipped 3.60% to $2.41 in pre-market trading after tumbling 22.84% on Friday. FireEye, Inc. FEYE shares fell 1.36% to $42.65 in pre-market trading after gaining 5.31% on Friday. Shire plc SHPG fell 1.21% to $245.76 in pre-market trading after dropping 2.18% on Friday.