AMPH: Amphastar Pharmaceuticals Inc.

As of Friday, May 22nd, 2026

$ 18.41

+0.23 +1.27%

Open: 18.25
High: 18.44
Low: 17.93
Volume: 485,196
Previous Close on Thursday, May 21st, 2026

$ 18.18

+0.10 +0.55%

Open: 18.07
High: 18.37
Low: 17.76
Volume: 1,488,514

Historical Data

Date Open High Low Close Volume Chg %Chg
2026-05-22 18.25 18.44 17.93 18.41 485,196 +0.23 +1.27
2026-05-21 18.07 18.37 17.76 18.18 1,488,514 +0.10 +0.55
2026-05-20 17.81 18.19 17.70 18.08 868,756 +0.26 +1.46
2026-05-19 17.28 17.91 17.00 17.82 725,146 +0.62 +3.60
2026-05-18 16.70 17.31 16.65 17.20 865,827 +0.33 +1.96
2026-05-15 17.27 17.53 16.76 16.87 679,269 -0.43 -2.49
2026-05-14 17.81 18.08 17.26 17.30 738,741 -1.02 -5.57
2026-05-13 17.50 18.57 17.43 18.32 971,167 +0.82 +4.69
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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 18.44
On 2026-05-22		 16.65
On 2026-05-18		 1.54 9.13 17.31
On 2026-05-18		 17.31
On 2026-05-18		 0.00 17.94
10D 19.41
On 2026-05-11		 16.65
On 2026-05-18		 -0.59 -3.11 19.41
On 2026-05-11		 16.65
On 2026-05-18		 -14.25 17.81
20D 24.35
On 2026-05-07		 16.65
On 2026-05-18		 -3.00 -14.01 24.35
On 2026-05-07		 16.65
On 2026-05-18		 -31.63 20.01
WTD 18.44
On 2026-05-22		 16.65
On 2026-05-18		 1.54 9.13 17.31
On 2026-05-18		 17.31
On 2026-05-18		 0.00 17.94
MTD 24.35
On 2026-05-07		 16.65
On 2026-05-18		 -3.55 -16.17 24.35
On 2026-05-07		 16.65
On 2026-05-18		 -31.63 19.57
As of Friday, May 22nd, 2026
 
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AMPH

Amphastar Pharmaceuticals Inc.

18.41 +0.23 +1.27 485,196