DC Halts Exelon's Acquisition of Pepco Holdings; Pepco Stock Tumbles

By Michael Brooks, Suzanne Herel and Ted Caddell WASHINGTON -- The D.C. Public Service Commission last week unanimously denied Exelon’s proposed $6.8 billion acquisition of Pepco Holdings Inc., sparking applause in the hearing room and sending PHI shares tumbling on Wall Street. “When this proposed merger is considered as a whole … we conclude...