By Sourasis Bose and Srivastava Vallari Nov 8 (Reuters) – Icahn Enterprises (IEP.O), headed by billionaire activist investor Carl Icahn, said on Friday it has submitted a proposal to boost its stake in Texas-based refiner CVR Energy (CVI.N) to 81.3%. The investment company, which already owns about 66.3% of CVR Energy, said it wants to … Read more