AMPH: Amphastar Pharmaceuticals Inc.

As of Friday, September 4th, 2026

$ 23.18

-0.66 -2.77%

Open: 23.47
High: 23.74
Low: 23.07
Volume: 625,537
Previous Close on Thursday, September 3rd, 2026

$ 23.84

+0.10 +0.42%

Open: 23.88
High: 23.92
Low: 23.04
Volume: 390,535

Historical Data

Date Open High Low Close Volume Chg %Chg
2026-09-04 23.47 23.74 23.07 23.18 625,537 -0.66 -2.77
2026-09-03 23.88 23.92 23.04 23.84 390,535 +0.10 +0.42
2026-09-02 23.05 23.83 23.03 23.74 436,233 +0.78 +3.40
2026-09-01 22.59 23.05 22.59 22.96 347,666 +0.43 +1.91
2026-08-31 21.86 22.65 21.52 22.53 271,798 +0.52 +2.36
2026-08-28 21.88 22.15 21.69 22.01 224,528 +0.13 +0.59
2026-08-27 21.69 21.97 21.63 21.88 259,781 -0.14 -0.64
2026-08-26 21.86 22.44 21.72 22.02 395,563 +0.04 +0.18
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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 23.92
On 2026-09-03		 21.52
On 2026-08-31		 1.17 5.32 23.92
On 2026-09-03		 23.07
On 2026-09-04		 -3.55 23.25
10D 23.92
On 2026-09-03		 21.26
On 2026-08-24		 1.58 7.31 23.92
On 2026-09-03		 23.07
On 2026-09-04		 -3.55 22.57
20D 23.92
On 2026-09-03		 19.55
On 2026-08-10		 2.40 11.55 20.90
On 2026-08-10		 19.61
On 2026-08-12		 -6.17 21.73
WTD 23.92
On 2026-09-03		 21.52
On 2026-08-31		 1.17 5.32 23.92
On 2026-09-03		 23.07
On 2026-09-04		 -3.55 23.25
MTD 23.92
On 2026-09-03		 22.59
On 2026-09-01		 0.65 2.89 23.92
On 2026-09-03		 23.07
On 2026-09-04		 -3.55 23.43
As of Friday, September 4th, 2026
 
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Recent
Ticker Last Chg %Chg Volume
AMPH

Amphastar Pharmaceuticals Inc.

23.18 -0.66 -2.77 625,537