Amphastar Pharmaceuticals, Inc. (AMPH) Stock Chart
AMPH price chart
Daily prices adjusted for splits and dividends. 1D and 5D show delayed intraday prices. Markers: E earnings, D dividend, S split.
Technical snapshot
Key levels & statistics
AMPH performance vs the market
Total return, dividends reinvestedAMPH monthly returns
AMPH historical prices
AMPH dividends & splits
About the AMPH chart
Amphastar Pharmaceuticals (AMPH) closed at $25.87 on October 16, 2026, down 3.4% so far this year. The stock is trading 15.9% above its 200-day moving average of $22.32, which technical analysts usually read as a long-term uptrend. Over the past year AMPH returned +11.4% including dividends, behind the S&P 500 (+16.8%).
This page charts the full trading history of Amphastar Pharmaceuticals, Inc. stock. Daily prices come from EODHD and are adjusted for stock splits and dividends, so returns over long periods are comparable. For the latest quote, company profile, earnings and news, see the AMPH stock overview.
AMPH chart FAQ
What is Amphastar Pharmaceuticals's all-time high stock price?
The highest closing price for AMPH was $65.00 on August 8, 2023 (adjusted for stock splits). As of the October 16, 2026 close it traded 60.2% below that level.
What is the 52-week range of AMPH stock?
Over the 52 weeks to October 16, 2026, AMPH traded between an intraday low of $16.64 on May 18, 2026 and an intraday high of $29.52 on January 12, 2026.
Is AMPH above its 200-day moving average?
Yes. On October 16, 2026 AMPH closed at $25.87, 15.9% above its 200-day simple moving average of $22.32. The 50-day average was $23.70.
How has AMPH stock performed compared with the S&P 500?
Including reinvested dividends, AMPH returned +11.4% over the past year, compared with +16.8% for the S&P 500 (SPY). Over five years the figures were +35.4% and +83.0%.
Does Amphastar Pharmaceuticals pay a dividend?
Amphastar Pharmaceuticals has not paid a dividend in the past 12 months.
How do I read the AMPH chart?
Pick a time range above the chart and choose candlesticks, a line or an area chart. Moving averages, Bollinger Bands, volume, RSI and MACD can be switched on with the indicator buttons, and "Compare" plots AMPH against the S&P 500, its sector or a competitor as a percentage change. Chart prices are adjusted for splits and dividends.