Daily trading records
Amphastar Pharmaceuticals Stock Price on July 17, 2026
Direct answer
Amphastar Pharmaceuticals closed at $19.745 on July 17, 2026.
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Review Amphastar Pharmaceuticals's price trend and period performance.
The chart connects verified session closes from April 21, 2026 through July 17, 2026.
Period performance is calculated from verified trading sessions.
5-session performance
+5.48%
From the July 10, 2026 close of $18.72 to $19.745 on July 17, 2026.
20-session performance
+1.73%
From the June 17, 2026 close of $19.41 to $19.745 on July 17, 2026.
60-session performance
-6.91%
From the April 21, 2026 close of $21.21 to $19.745 on July 17, 2026.
Verified data
- Open
- $19.84
- High
- $20.35
- Low
- $19.63
- Close
- $19.745
- Volume
- 338,457
- Prior-close change
- -$0.115 (-0.58%)
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Read the frequently asked questions.
What was Amphastar Pharmaceuticals's closing price on July 17, 2026?
Amphastar Pharmaceuticals closed at $19.745 on July 17, 2026.
What were Amphastar Pharmaceuticals's open, high and low on July 17, 2026?
The open was $19.84, the high was $20.35 and the low was $19.63.
How much did Amphastar Pharmaceuticals change from the prior close on July 17, 2026?
The change from the prior close was -$0.115 (-0.58%).
What was Amphastar Pharmaceuticals's volume on July 17, 2026?
Trading volume was 338,457 shares.
What is the source for Amphastar Pharmaceuticals's daily prices?
Daily aggregate prices are provided by Polygon.