Oct 9, 2018 Allergan's Neurology Portfolio, Stock Performance, and Ratings Allergan’s Neurology Portfolio, Stock Performance, and RatingsOn October 3, Allergan's (AGN) stock price closed at $193.46, which is ~11.0% below its 52-week high of $215.10 on October 3, 2017. Allergan's stock ... read morePublished on 2018-10-09