United States, Nov. 10 -- Eni today celebrated the thirtieth anniversary of its listing in the US market at the New York Stock Exchange (NYSE), attended by the Chief Executive Officer Claudio Descalzi and Eni's top management.During the event, Eni's CEO updated the US financial community on the execution of the Company's distinctive strategy, employing its existing competitive strengths to a rapidly changing energy market creating a portfolio of established, new and emerging businesses that generate highly competitive growth and attractive shareholder returns. Since Eni's IPO US investors have been integral to the Company. They currently make up 25% of Eni's free float, the largest single country outside of Italy, and represent around 40% o...