AstraZeneca's Partnership With Amgen Ends Abruptly By: TalkMarkets May 26, 2015 at 16:00 PM EDT Shares of both AstraZeneca and Amgen declined after announcing the end of a partnership for psoriasis drug. Read More >> Related Stocks: Amgen Astrazeneca Plc ADR Eli Lilly Novartis Ag ADR