FORT LAUDERDALE, Fla. & EL SEGUNDO, Calif.--(BUSINESS WIRE)--In a move to further extend the scope of its online brokerage offering, TradeKing Group announced today that it has entered into an agreement with California-based MB Trading to acquire all of the firm’s assets. The acquisition is part of TradeKing’s mission to build a diversified financial services firm that fits the needs of every kind of client, from new investors to the savviest traders. Financial terms of the agreement were not d