AMPH: Amphastar Pharmaceuticals Inc.

As of Friday, September 11th, 2026

$ 23.78

+0.24 +1.02%

Open: 23.65
High: 23.80
Low: 23.24
Volume: 400,724
Previous Close on Thursday, September 10th, 2026

$ 23.54

+0.50 +2.17%

Open: 23.00
High: 23.69
Low: 22.76
Volume: 495,998

Historical Data

Date Open High Low Close Volume Chg %Chg
2026-09-11 23.65 23.80 23.24 23.78 400,724 +0.24 +1.02
2026-09-10 23.00 23.69 22.76 23.54 495,998 +0.50 +2.17
2026-09-09 22.84 23.07 22.57 23.04 343,408 +0.11 +0.48
2026-09-08 22.82 23.14 22.30 22.93 460,013 -0.25 -1.08
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
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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 23.80
On 2026-09-11		 22.30
On 2026-09-08		 -0.06 -0.25 23.74
On 2026-09-04		 22.30
On 2026-09-08		 -6.07 23.29
10D 23.92
On 2026-09-03		 21.52
On 2026-08-31		 1.90 8.68 23.92
On 2026-09-03		 22.30
On 2026-09-08		 -6.77 23.16
20D 23.92
On 2026-09-03		 19.89
On 2026-08-14		 3.60 17.84 23.92
On 2026-09-03		 22.30
On 2026-09-08		 -6.77 22.35
WTD 23.80
On 2026-09-11		 22.30
On 2026-09-08		 0.60 2.59 23.14
On 2026-09-08		 22.57
On 2026-09-09		 -2.44 23.32
MTD 23.92
On 2026-09-03		 22.30
On 2026-09-08		 1.25 5.55 23.92
On 2026-09-03		 22.30
On 2026-09-08		 -6.77 23.38
As of Friday, September 11th, 2026
 
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AMPH

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23.78 +0.24 +1.02 400,724