Allergan plc Ordinary Shares (NYSE:AGN), which lost 14.23% during the first quarter, has continued to plummet in the second quarter, losing another 12.15%, taking its year-to-date decline down to 24.65%. Taking advantage of the tumbling share price, Seth Klarman 's Baupost Group initiated a new position in the company during the first quarter, of 1.72 million shares. The largest stake on March 31 was held by John Paulson's Paulson & Co, and totaled 5.41 million shares.