Original: Shares of power company FirstEnergy ( FE) - Get Report jumped Thursday after the firm disclosed it had received a letter from activist investor Carl Icahn saying that his firm intends to acquire voting shares in the company. FirstEnergy said it received a letter dated Feb. 16 from Icahn Capital saying that it has a "good faith intention" to acquire shares worth more than $184 million but less than $919.9 million. The Akron, Ohio company said it does not know whether Carl Icahn and his affiliates have acquired the shares already, nor does it know his intentions with respect to FirstEnergy, according to a regulatory filing with the Securities and Exchange Commission on Thursday.