Amphastar Pharmaceuticals (NASDAQ:AMPH – Get Free Report) released its quarterly earnings results on Thursday. Amphastar Pharmaceuticals Stock Up 4.9%Amphastar Pharmaceuticals stock opened at $20.78 on Friday. Amphastar Pharmaceuticals Q2 Earnings and Revenues Top EstimatesThe earnings beat was broad enough to attract attention from analysts, with coverage highlighting stronger-than-expected revenue, EPS and other key quarterly metrics. Amphastar Pharmaceuticals Company Profile(Get Free Report)Amphastar Pharmaceuticals, Inc is a specialty pharmaceutical company headquartered in Rancho Cucamonga, California. Featured StoriesReceive News & Ratings for Amphastar Pharmaceuticals Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for Amphastar Pharmaceuticals and related companies with MarketBeat.com's FREE daily email newsletter.