Amphastar Pharmaceuticals (AMPH) News Today $25.07 +0.28 (+1.13%) Closing price 05/20/2025 04:00 PM EasternExtended Trading$25.08 +0.00 (+0.02%) As of 08:03 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 Headlines Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock AMPH Latest News All Sources Trusted Sources MarketBeat Benzinga Bloomberg GlobeNewswire GuruFocus MarketWatch Motley Fool NASDAQ PR Newswire Reuters Seeking Alpha TalkMarkets The Street TipRanks The Wall Street Journal Wall Street Zen Yahoo Finance Source Sentiment refers to the positivity or negativity of each headline according to our language processing algorithm. Sentiment All Sentiments Very Positive Positive Neutral Negative Very Negative Most Recent May 2025 April 2025 March 2025 February 2025 January 2025 December 2024 November 2024 October 2024 September 2024 August 2024 July 2024 June 2024 May 2024 April 2024 March 2024 February 2024 January 2024 December 2023 November 2023 October 2023 September 2023 August 2023 July 2023 June 2023 May 2023 April 2023 March 2023 February 2023 January 2023 December 2022 November 2022 October 2022 September 2022 August 2022 July 2022 June 2022 Time Period Systematic Financial Management LP Acquires Shares of 246,348 Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Systematic Financial Management LP acquired a new stake in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) in the fourth quarter, according to the company in its most recent filing with the Securities and Exchange Commission (SEC). The fund acquired 246,348 shares of the company's stockMay 20 at 6:06 AM | marketbeat.comJanus Henderson Group PLC Grows Holdings in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Janus Henderson Group PLC lifted its holdings in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 28.8% during the fourth quarter, according to its most recent 13F filing with the Securities and Exchange Commission (SEC). The firm owned 189,347 shares of the company's stock after buyiMay 20 at 4:38 AM | marketbeat.comD. E. Shaw & Co. Inc. Boosts Stock Holdings in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)D. E. Shaw & Co. Inc. grew its position in shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 402.4% in the 4th quarter, according to the company in its most recent filing with the Securities and Exchange Commission (SEC). The institutional investor owned 118,851 shares of thMay 20 at 4:20 AM | marketbeat.comJane Street Group LLC Raises Holdings in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Jane Street Group LLC grew its holdings in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 23.0% in the fourth quarter, according to the company in its most recent 13F filing with the Securities and Exchange Commission. The institutional investor owned 99,487 shares of the company'sMay 15, 2025 | marketbeat.comNorthern Trust Corp Buys 29,808 Shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Northern Trust Corp grew its stake in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 5.1% during the 4th quarter, according to its most recent disclosure with the Securities and Exchange Commission. The institutional investor owned 613,170 shares of the company's stock after acquirMay 15, 2025 | marketbeat.comJPMorgan Chase & Co. Reiterates "Neutral" Rating for Amphastar Pharmaceuticals (NASDAQ:AMPH)JPMorgan Chase & Co. reiterated a "neutral" rating and set a $30.00 price objective (down previously from $45.00) on shares of Amphastar Pharmaceuticals in a research report on Monday.May 14, 2025 | marketbeat.comAmphastar Pharmaceuticals (NASDAQ:AMPH) Earns "Neutral" Rating from JPMorgan Chase & Co.May 14, 2025 | americanbankingnews.comAmphastar stock rating cut to Neutral by JPMorganMay 14, 2025 | investing.comJP Morgan Downgrades Amphastar Pharmaceuticals (AMPH)May 13, 2025 | msn.comAmphastar Pharmaceuticals: Navigating Through An Inflection YearMay 11, 2025 | seekingalpha.comWells Fargo & Company Cuts Amphastar Pharmaceuticals (NASDAQ:AMPH) Price Target to $35.00May 11, 2025 | americanbankingnews.comAmphastar Pharmaceuticals, Inc.: Amphastar Pharmaceuticals to Present at the 2025 Bank of America Health Care ConferenceMay 10, 2025 | finanznachrichten.deAmphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Shares Purchased by Schonfeld Strategic Advisors LLCSchonfeld Strategic Advisors LLC raised its position in shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 343.6% in the fourth quarter, according to the company in its most recent Form 13F filing with the Securities and Exchange Commission. The firm owned 42,614 shares of theMay 9, 2025 | marketbeat.comAmphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Q1 2025 Earnings Call TranscriptMay 8, 2025 | insidermonkey.comAmphastar outlines key launches and product growth drivers for 2025May 8, 2025 | msn.comAmphastar Pharmaceuticals (NASDAQ:AMPH) Misses Q1 Sales TargetsMay 7, 2025 | msn.comAmphastar Pharmaceuticals (NASDAQ:AMPH) Misses Q1 Sales TargetsMay 7, 2025 | msn.comAmphastar Pharmaceuticals (AMPH) Reports Earnings Tomorrow: What To ExpectMay 6, 2025 | finance.yahoo.comDimensional Fund Advisors LP Buys 105,288 Shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Dimensional Fund Advisors LP boosted its stake in shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 9.6% during the 4th quarter, according to its most recent Form 13F filing with the SEC. The institutional investor owned 1,198,590 shares of the company's stock after purchasiMay 6, 2025 | marketbeat.comFirst Trust Advisors LP Raises Position in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)First Trust Advisors LP lifted its stake in shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 350.0% during the 4th quarter, according to the company in its most recent disclosure with the Securities & Exchange Commission. The fund owned 81,129 shares of the company's stoMay 6, 2025 | marketbeat.comAristeia Capital L.L.C. Acquires Shares of 43,235 Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Aristeia Capital L.L.C. acquired a new position in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) during the 4th quarter, according to the company in its most recent Form 13F filing with the Securities & Exchange Commission. The institutional investor acquired 43,235 shares of theMay 5, 2025 | marketbeat.comAmphastar Pharmaceuticals (AMPH) Projected to Post Quarterly Earnings on WednesdayAmphastar Pharmaceuticals (NASDAQ:AMPH) will be releasing its Q1 2025 earnings after the market closes on Wednesday, May 7. (View Earnings Report at https://www.marketbeat.com/earnings/reports/2025-5-7-amphastar-pharmaceuticals-inc-stock/)May 4, 2025 | marketbeat.comAmphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Director Sells $12,040.00 in StockMay 3, 2025 | insidertrades.comBarclays PLC Buys 10,334 Shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Barclays PLC grew its stake in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 13.9% during the 4th quarter, according to its most recent disclosure with the Securities and Exchange Commission. The institutional investor owned 84,790 shares of the company's stock after acquiring anMay 2, 2025 | marketbeat.comRaymond James Financial Inc. Invests $3.45 Million in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Raymond James Financial Inc. purchased a new stake in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) in the 4th quarter, according to the company in its most recent 13F filing with the SEC. The fund purchased 92,904 shares of the company's stock, valued at approximately $3,450,000. RayApril 29, 2025 | marketbeat.comAmphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Shares Purchased by Oberweis Asset Management Inc.Oberweis Asset Management Inc. raised its position in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 14.5% during the 4th quarter, according to its most recent filing with the Securities and Exchange Commission (SEC). The fund owned 184,595 shares of the company's stock after purchaApril 27, 2025 | marketbeat.comFuller & Thaler Asset Management Inc. Sells 127,841 Shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Fuller & Thaler Asset Management Inc. trimmed its stake in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 10.1% in the fourth quarter, according to its most recent Form 13F filing with the Securities and Exchange Commission. The firm owned 1,132,926 shares of the company's stock aftApril 26, 2025 | marketbeat.com2 Safe-and-Steady Stocks with Solid Fundamentals and 1 to Think Twice AboutApril 24, 2025 | finance.yahoo.comBank of America Securities Remains a Hold on Amphastar Pharmaceuticals (AMPH)April 22, 2025 | markets.businessinsider.comAmphastar price target lowered to $31 from $36 at BofAApril 22, 2025 | markets.businessinsider.comMesirow Institutional Investment Management Inc. Has $14.12 Million Holdings in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Mesirow Institutional Investment Management Inc. trimmed its stake in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 8.1% during the fourth quarter, according to its most recent disclosure with the Securities and Exchange Commission (SEC). The firm owned 380,389 shares of the companApril 22, 2025 | marketbeat.comAmphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Position Decreased by Epoch Investment Partners Inc.Epoch Investment Partners Inc. reduced its holdings in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 7.5% during the fourth quarter, according to its most recent filing with the Securities and Exchange Commission (SEC). The institutional investor owned 1,101,273 shares of the compApril 22, 2025 | marketbeat.comMarshall Wace LLP Buys 40,212 Shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Marshall Wace LLP lifted its stake in shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 7.1% during the fourth quarter, according to the company in its most recent 13F filing with the SEC. The firm owned 608,706 shares of the company's stock after purchasing an additional 40,April 22, 2025 | marketbeat.comJPMorgan Chase & Co. Sells 385,349 Shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)JPMorgan Chase & Co. lowered its holdings in shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 71.5% in the 4th quarter, according to its most recent Form 13F filing with the Securities and Exchange Commission. The institutional investor owned 153,571 shares of the company'sApril 21, 2025 | marketbeat.comAmphastar Pharmaceuticals (NASDAQ:AMPH) Sets New 1-Year Low - Should You Sell?Amphastar Pharmaceuticals (NASDAQ:AMPH) Hits New 1-Year Low - Here's What HappenedApril 18, 2025 | marketbeat.comAmphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Shares Sold by LSV Asset ManagementLSV Asset Management lowered its position in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 54.7% in the fourth quarter, according to its most recent Form 13F filing with the Securities & Exchange Commission. The fund owned 36,400 shares of the company's stock after selling 44,0April 17, 2025 | marketbeat.comPortolan Capital Management LLC Cuts Stock Position in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Portolan Capital Management LLC trimmed its holdings in shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 60.0% in the fourth quarter, according to the company in its most recent filing with the Securities and Exchange Commission. The firm owned 131,123 shares of the company'April 16, 2025 | marketbeat.com2 Reasons to Like AMPH and 1 to Stay SkepticalApril 15, 2025 | finance.yahoo.comIs Amphastar Pharmaceuticals, Inc. (AMPH) the Best Pharma Stock to Buy for Long Term Growth?April 15, 2025 | insidermonkey.comRenaissance Technologies LLC Has $19.51 Million Stake in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Renaissance Technologies LLC increased its stake in shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 7.4% during the 4th quarter, according to its most recent Form 13F filing with the Securities and Exchange Commission (SEC). The fund owned 525,500 shares of the company's stApril 15, 2025 | marketbeat.comBessemer Group Inc. Buys 11,609 Shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Bessemer Group Inc. grew its position in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 2.4% during the fourth quarter, according to the company in its most recent disclosure with the Securities & Exchange Commission. The firm owned 488,630 shares of the company's stock after puApril 13, 2025 | marketbeat.comAmphastar Pharmaceuticals' (AMPH) Hold Rating Reaffirmed at Needham & Company LLCNeedham & Company LLC restated a "hold" rating on shares of Amphastar Pharmaceuticals in a report on Thursday.April 12, 2025 | marketbeat.comAmphastar Pharmaceuticals, Inc.'s (NASDAQ:AMPH) Stock Has Been Sliding But Fundamentals Look Strong: Is The Market Wrong?April 11, 2025 | finance.yahoo.comRenaissance Group LLC Increases Holdings in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Renaissance Group LLC lifted its holdings in shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 42.5% during the fourth quarter, according to its most recent 13F filing with the Securities and Exchange Commission (SEC). The firm owned 99,572 shares of the company's stock afterApril 11, 2025 | marketbeat.comFederated Hermes Inc. Sells 1,123,613 Shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Federated Hermes Inc. decreased its position in Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 57.7% during the fourth quarter, according to its most recent disclosure with the Securities and Exchange Commission. The firm owned 823,487 shares of the company's stock after selling 1,1April 11, 2025 | marketbeat.comAmphastar Pharmaceuticals (NASDAQ:AMPH) Sets New 12-Month Low - Here's What HappenedAmphastar Pharmaceuticals (NASDAQ:AMPH) Hits New 52-Week Low - Should You Sell?April 9, 2025 | marketbeat.comAmphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Position Raised by Dynamic Technology Lab Private LtdDynamic Technology Lab Private Ltd lifted its position in shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 309.0% in the 4th quarter, according to its most recent disclosure with the SEC. The fund owned 19,150 shares of the company's stock after acquiring an additional 14,46April 8, 2025 | marketbeat.comTrexquant Investment LP Acquires 16,248 Shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH)Trexquant Investment LP increased its holdings in shares of Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Free Report) by 18.2% during the fourth quarter, according to the company in its most recent Form 13F filing with the SEC. The firm owned 105,528 shares of the company's stock after acquiringApril 7, 2025 | marketbeat.comAmphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Director Floyd F. Petersen Sells 500 SharesAmphastar Pharmaceuticals, Inc. (NASDAQ:AMPH - Get Free Report) Director Floyd F. Petersen sold 500 shares of the firm's stock in a transaction that occurred on Tuesday, April 1st. The shares were sold at an average price of $28.38, for a total transaction of $14,190.00. Following the completion of the sale, the director now directly owns 73,909 shares in the company, valued at approximately $2,097,537.42. This trade represents a 0.67 % decrease in their position. The sale was disclosed in a filing with the Securities & Exchange Commission, which can be accessed through this hyperlink.April 4, 2025 | marketbeat.comAmphastar Pharmaceuticals (NASDAQ:AMPH) Trading Down 3.1% - What's Next?Amphastar Pharmaceuticals (NASDAQ:AMPH) Shares Down 3.1% - What's Next?April 4, 2025 | marketbeat.com Get Amphastar Pharmaceuticals News Delivered to You Automatically Sign up to receive the latest news and ratings for AMPH and its competitors with MarketBeat's FREE daily newsletter. Email Address AMPH Media Mentions By Week AMPH Media Sentiment Learn about the media sentiment score. Each headline receives a score ranging from 2 (good news) to -2 (bad news). Our company news sentiment scores track the average news sentiment of articles about each company over the most recent 7 days in order to identify companies that are receiving positive press. AMPH News Sentiment▼1.020.65▲Average Medical News Sentiment AMPH News Coverage Learn about the media coverage comparison. We track news headlines from hundreds of news outlets and tag them by company. This chart compares the number of articles about this company in the last seven days compared with the average number of articles about this company on a typical week. AMPH Articles This Week▼54▲AMPH Articles Average Week Get Amphastar Pharmaceuticals News Delivered to You Automatically Sign up to receive the latest news and ratings for AMPH and its competitors with MarketBeat's FREE daily newsletter. 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