Amphastar Pharmaceuticals (AMPH) Stock Chart & Stock Price History $35.70 +0.04 (+0.11%) Closing price 01/17/2025 04:00 PM EasternExtended Trading$36.90 +1.20 (+3.36%) As of 08:31 AM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrends Amphastar Pharmaceuticals Stock Price Performance 5 Day Performance+0.11%1 Month Performance-8.79%3 Month Performance-29.75%6 Month Performance-9.87%Year-To-Date Performance-3.85%1 Year Performance-35.14% Receive AMPH Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Amphastar Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. Email Address AMPH Stock Chart for Tuesday, January, 21, 2025 AMPH Chart by TradingView Amphastar Pharmaceuticals Stock Price History Daily Weekly Monthly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization01/20/2025$35.70$35.70$35.96$35.27410,479 shs$1.72 billion01/17/2025$35.66$35.70+0.11%$35.96$35.27410,479 shs$1.72 billion01/16/2025$36.24$35.66-1.60%$36.85$34.601.06 million shs$1.71 billion01/15/2025$38.48$36.24-5.82%$39.01$35.87908,124 shs$1.74 billion01/14/2025$37.92$38.48+1.48%$38.92$37.26605,625 shs$1.85 billion01/13/2025$36.36$37.92+4.29%$37.95$35.85461,373 shs$1.82 billion01/10/2025$36.63$36.36-0.74%$36.58$35.71410,060 shs$1.75 billion01/09/2025$36.63$36.63$36.99$34.69923,553 shs$1.76 billion01/08/2025$35.25$36.63+3.91%$36.99$34.69923,553 shs$1.76 billion01/07/2025$35.43$35.25-0.51%$36.16$34.97801,475 shs$1.69 billion Get the Latest News and Ratings for AMPH and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Amphastar Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 01/06/2025$36.30$35.43-2.40%$36.45$34.87824,404 shs$1.70 billion01/03/2025$36.36$36.30-0.17%$36.88$35.68633,252 shs$1.75 billion01/02/2025$37.13$36.36-2.07%$37.84$36.07410,218 shs$1.75 billion01/01/2025$37.13$37.13$37.37$36.48568,379 shs$1.79 billion12/31/2024$36.84$37.13+0.79%$37.37$36.48568,379 shs$1.79 billion12/30/2024$37.80$36.84-2.54%$37.69$36.80484,358 shs$1.77 billion12/27/2024$38.17$37.80-0.97%$38.27$37.36374,180 shs$1.82 billion12/26/2024$38.27$38.17-0.26%$38.60$37.81403,466 shs$1.84 billion12/25/2024$38.27$38.27$39.56$37.88305,165 shs$1.84 billion12/24/2024$39.12$38.27-2.17%$39.56$37.88305,165 shs$1.84 billion12/23/2024$39.14$39.12-0.05%$39.77$38.37543,040 shs$1.88 billion12/20/2024$39.39$39.14-0.63%$40.74$38.962.48 million shs$1.88 billion Related Companies RVMD Stock Chart LNTH Stock Chart BPMC Stock Chart BBIO Stock Chart LEGN Stock Chart ELAN Stock Chart CYTK Stock Chart GRFS Stock Chart NUVL Stock Chart VKTX Stock Chart Receive AMPH Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Amphastar Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 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