AMPH: Amphastar Pharmaceuticals Inc.

As of Wednesday, August 12th, 2026

$ 19.98

-0.44 -2.15%

Open: 20.16
High: 20.22
Low: 19.61
Volume: 337,222
Previous Close on Tuesday, August 11th, 2026

$ 20.42

+0.11 +0.54%

Open: 20.00
High: 20.57
Low: 20.00
Volume: 361,801

Historical Data

Date Open High Low Close Volume Chg %Chg
2026-08-12 20.16 20.22 19.61 19.98 337,222 -0.44 -2.15
2026-08-11 20.00 20.57 20.00 20.42 361,801 +0.11 +0.54
2026-08-10 20.74 20.90 19.55 20.31 645,728 -0.47 -2.26
2026-08-07 22.48 22.65 20.40 20.78 1,299,876 +0.97 +4.90
2026-08-06 20.22 20.25 19.60 19.81 526,622 -0.43 -2.12
2026-08-05 20.06 20.28 19.88 20.24 351,487 +0.34 +1.71
2026-08-04 20.11 20.38 19.86 19.90 48,146 -0.32 -1.58
2026-08-03 20.11 20.46 19.70 20.22 413,099 +0.28 +1.40
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Metrics and Technicals

Period High Low Chg %Chg Max Drawdown SMA
Peak Trough %Loss
Period High Low Chg %Chg MDD SMA
5D 22.65
On 2026-08-07		 19.55
On 2026-08-10		 -0.26 -1.28 22.65
On 2026-08-07		 19.55
On 2026-08-10		 -13.67 20.26
10D 22.65
On 2026-08-07		 19.55
On 2026-08-10		 -0.60 -2.92 22.65
On 2026-08-07		 19.55
On 2026-08-10		 -13.67 20.20
20D 22.65
On 2026-08-07		 18.50
On 2026-07-24		 0.58 2.99 22.65
On 2026-08-07		 19.55
On 2026-08-10		 -13.67 19.88
WTD 20.90
On 2026-08-10		 19.55
On 2026-08-10		 -0.80 -3.85 20.90
On 2026-08-10		 19.61
On 2026-08-12		 -6.17 20.24
MTD 22.65
On 2026-08-07		 19.55
On 2026-08-10		 0.04 0.20 22.65
On 2026-08-07		 19.55
On 2026-08-10		 -13.67 20.21
As of Wednesday, August 12th, 2026
 
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Recent
Ticker Last Chg %Chg Volume
AMPH

Amphastar Pharmaceuticals Inc.

19.98 -0.44 -2.15 337,222