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Amphastar Pharmaceuticals, Inc.

AMPHNASDAQHealthcareDrug Manufacturers - Specialty & Generic

$25.87Today:- (-)1Y +11.10%

As of Oct 16, 2026 close

Market cap
$1.17B
P/E (TTM)
14.88
Forward P/E
26.76
Dividend yield
-
52-week range
$16.65$29.52
Volume (live)
-
Avg. volume (3M)
499.07K

Amphastar Pharmaceuticals (AMPH) Historical Stock Prices

Analyze Amphastar Pharmaceuticals (AMPH) historical stock prices with comprehensive OHLC data, adjusted close prices, and daily trading volume. Access interactive price charts and detailed historical price data across multiple timeframes including daily, weekly, monthly, and yearly intervals for complete price history analysis.

Amphastar Pharmaceuticals (AMPH) Interactive Price Chart

Interactive historical price chart showing Amphastar Pharmaceuticals stock price movements and trends across multiple time periods.

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AMPH Historical Price Data Table

Complete historical stock price data with OHLC prices, adjusted close, and daily trading volume. Filter by time interval and date range for detailed price history analysis.

Filter Historical Data

Active filters: 6 Months · Daily126 records
Showing 1-50 of 126
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AMPH historical price data table with daily, weekly, monthly, quarterly, and yearly trading intervals. Track Open, High, Low, Close, Adjusted Close prices, and trading volume to analyze price trends, technical patterns, and market activity for comprehensive price history analysis.
DateOpenHighLowCloseAdj CloseVolume
Oct 16, 202626.6126.6125.5225.8725.87351.98K
Oct 15, 202626.3827.1026.1326.4226.42352.33K
Oct 14, 202625.8926.5725.8926.0826.08364.65K
Oct 13, 202626.9127.0026.0326.0526.05326.54K
Oct 12, 202626.6226.8626.5126.7626.76362.82K
Oct 9, 202625.7326.7925.6526.6226.62269.25K
Oct 8, 202625.3926.1425.0925.8125.81422.79K
Oct 7, 202625.9126.1725.2925.5425.54774.80K
Oct 6, 202625.5426.1325.0325.9125.91466.11K
Oct 5, 202625.4325.7025.1725.3725.37453.63K
Oct 2, 202625.4625.5525.0625.4325.43372.33K
Oct 1, 202625.6026.0225.3025.3525.35528.69K
Sep 30, 202626.7326.7925.7725.8125.81504.65K
Sep 29, 202627.5927.6426.5226.6826.68626.94K
Sep 28, 202625.9927.8025.9527.3927.39747.86K
Sep 25, 202626.2526.6325.6626.1326.13370.89K
Sep 24, 202624.8126.3124.6426.2726.27568.86K
Sep 23, 202624.3925.1124.2024.9624.96504.55K
Sep 22, 202624.6024.8324.0024.3224.32496.73K
Sep 21, 202623.5425.4123.4524.4824.48563.48K
Sep 18, 202623.6923.9923.5123.6223.621.45M
Sep 17, 202624.0824.1823.5023.8223.82452.00K
Sep 16, 202623.6424.3923.4923.9523.95502.99K
Sep 15, 202623.7523.9423.5623.6423.64347.39K
Sep 14, 202623.8424.2823.5523.9123.91471.95K
Sep 11, 202623.6523.8023.2423.7823.78400.73K
Sep 10, 202623.0023.6922.7523.5423.54496.00K
Sep 9, 202622.8423.0722.5723.0423.04343.41K
Sep 8, 202622.8223.1422.3022.9322.93451.31K
Sep 4, 202623.4723.7423.0723.1823.18626.12K
Sep 3, 202623.8823.9223.0423.8423.84391.24K
Sep 2, 202623.0523.8323.0323.7423.74436.69K
Sep 1, 202622.5923.0522.5922.9622.96349.05K
Aug 31, 202621.8622.6521.5222.5322.53271.82K
Aug 28, 202621.8822.1521.6922.0122.01224.53K
Aug 27, 202621.6921.9721.6321.8821.88247.75K
Aug 26, 202621.8622.4321.7122.0222.02395.57K
Aug 25, 202621.5022.0721.4121.9821.98283.72K
Aug 24, 202621.6021.8121.2621.5221.52209.56K
Aug 21, 202621.6422.2021.4421.6021.60376.56K
Aug 20, 202621.3821.7621.2421.6821.68338.70K
Aug 19, 202621.6421.9921.1421.7421.74410.76K
Aug 18, 202621.1121.5921.0721.3421.34411.80K
Aug 17, 202620.9021.2320.7720.8620.86533.50K
Aug 14, 202620.0221.0719.8920.9120.91305.68K
Aug 13, 202620.1820.2719.8420.1820.18307.44K
Aug 12, 202620.1620.2119.6119.9819.98337.11K
Aug 11, 202620.0020.5720.0020.4220.42361.82K
Aug 10, 202620.7420.9019.5520.3120.31645.74K
Aug 7, 202622.4822.6420.4020.7820.781.30M
Show:
of 126

Source: Daily price history (open, high, low, close and volume). Data as of Oct 16, 2026. Data sources and methodology

Understanding Historical Stock Price Data & OHLC Metrics

Open Price
The price at which the stock opened for trading at the start of the trading session.
High Price
The highest price at which the stock traded during the trading session.
Low Price
The lowest price at which the stock traded during the trading session.
Close Price
The final price when trading closed for the session.
Adjusted Close Price
The closing price adjusted for corporate actions such as dividends, stock splits, and rights offerings. Used for accurate long-term historical price analysis and return calculations.
Volume
The total number of shares traded during the session, indicating trading activity and liquidity.