Pre-Market Imbalance Update: GE 526K To Sell, Alibaba 221K To Buy, GM 183K To Sell, Square 169K To Buy, BofA 136K To Sell, Twitter 116K To Sell, AT&T 108K To Buy, Pfizer 106K To Sell, Coca-Cola 59K To Sell, Verizon 51K To Sell, Mastercard 38K To Buy