2015-05-6 5e4f94ef64ba0c28bb4d83a84e39e2da8ad1297d 1 Alexion Pharmaceuticals 1 /wiki/alexion%20pharmaceuticals Synageva BioPharma 13 /wiki/synageva%20biopharma Alexion Pharmaceuticals Synageva BioPharma Alexion Pharmaceuticals /feed/2015/05/6/alexion-pharmaceuticals-agrees-to-purchase-synageva-biopharma-a-maker-of-rare-disease-treatments-for-us-86-billion New York Times 6 29bc0bac2efc26065458498ab893ba4ad2ad2641 5 https://www.nytimes.com/2015/05/07/business/dealbook/alexion-puts-its-soaring-stock-price-to-good-use.html 2015 Alexion Pharmaceuticals agrees to purchase Synageva BioPharma, a maker of rare disease treatments, for US$8.6 billion.