AMPH: Amphastar Pharmaceuticals Inc.

As of Tuesday, September 1st, 2026

$ 22.96

+0.43 +1.91%

Open: 22.59
High: 23.05
Low: 22.59
Volume: 347,666
Previous Close on Monday, August 31st, 2026

$ 22.53

+0.52 +2.36%

Open: 21.86
High: 22.65
Low: 21.52
Volume: 271,798

Historical Data

Date Open High Low Close Volume Chg %Chg
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
2026-08-25 21.50 22.07 21.41 21.98 283,626 +0.46 +2.14
2026-08-24 21.60 21.81 21.26 21.52 201,945 -0.08 -0.37
2026-08-21 21.64 22.20 21.44 21.60 376,554 -0.08 -0.37
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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 23.05
On 2026-09-01		 21.52
On 2026-08-31		 0.98 4.46 22.44
On 2026-08-26		 21.63
On 2026-08-27		 -3.61 22.28
10D 23.05
On 2026-09-01		 21.15
On 2026-08-19		 1.62 7.59 22.20
On 2026-08-21		 21.26
On 2026-08-24		 -4.23 21.99
20D 23.05
On 2026-09-01		 19.55
On 2026-08-10		 3.06 15.38 22.65
On 2026-08-07		 19.55
On 2026-08-10		 -13.67 21.24
WTD 23.05
On 2026-09-01		 21.52
On 2026-08-31		 0.95 4.32 22.65
On 2026-08-31		 22.65
On 2026-08-31		 0.00 22.75
MTD 23.05
On 2026-09-01		 22.59
On 2026-09-01		 0.43 1.91 -- -- -- 22.96
As of Tuesday, September 1st, 2026
 
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Recent
Ticker Last Chg %Chg Volume
AMPH

Amphastar Pharmaceuticals Inc.

22.96 +0.43 +1.91 347,666