Élan Corporation plc was a major drugs firm based in Dublin, Ireland, which had major interests in the United States, it was listed on which American stock exchange located at 11 Wall Street, Lower Manhattan, New York City, New York, as ELN?
Élan:  It was listed on the New York Stock Exchange as ELN, the Irish Stock Exchange as ELN.I, and the London Stock Exchange as ELN.L. New York Stock Exchange: The New York Stock Exchange (abbreviated as NYSE and nicknamed "The Big Board"), is an American stock exchange located at 11 Wall Street, Lower Manhattan, New York City, New York.
New York Stock Exchange