Amphastar Pharmaceuticals Inc (AMPH)
NASDAQ:AMPH
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Time Period
1Y
Events
Historical Prices
Rows:
May 19, 2026
17.28
17.91
17.00
17.82
17.82
+3.60%
725,146
1.21
May 18, 2026
16.70
17.31
16.65
17.20
17.20
+1.96%
866,027
1.47
May 15, 2026
17.27
17.53
16.76
16.87
16.87
-2.49%
679,289
1.16
May 14, 2026
17.81
18.08
17.26
17.30
17.30
-5.57%
739,074
1.29
May 13, 2026
17.50
18.57
17.43
18.32
18.32
+4.69%
971,189
1.73
May 12, 2026
18.41
18.58
17.26
17.50
17.50
-5.15%
1,219,603
2.22
May 11, 2026
19.13
19.41
18.33
18.45
18.45
-2.89%
1,359,559
2.56
May 08, 2026
18.58
19.53
18.28
19.00
19.00
-20.93%
1,983,804
3.94
May 07, 2026
24.01
24.35
23.87
24.03
24.03
+0.54%
373,521
0.74
May 06, 2026
23.50
24.15
23.50
23.90
23.90
+2.18%
392,763
0.78
May 05, 2026
22.85
23.46
22.75
23.39
23.39
+2.86%
366,945
0.73
May 04, 2026
21.82
23.22
21.72
22.74
22.74
+3.93%
487,139
0.98
May 01, 2026
21.98
22.26
21.64
21.88
21.88
-0.36%
353,190
0.71
Apr 30, 2026
21.63
22.36
21.57
21.96
21.96
+1.53%
407,242
0.81
Apr 29, 2026
21.50
21.86
21.48
21.63
21.63
-0.87%
268,688
0.54
Apr 28, 2026
21.71
22.04
21.56
21.82
21.82
+0.79%
281,225
0.56
Apr 27, 2026
21.47
22.06
21.46
21.65
21.65
+1.12%
329,613
0.66
Apr 24, 2026
21.05
21.60
20.77
21.41
21.41
+1.90%
429,703
0.87
Apr 23, 2026
20.99
21.23
20.77
21.01
21.01
+0.10%
302,590
0.61
Apr 22, 2026
21.40
21.59
20.77
20.99
20.99
-1.04%
410,802
0.83
Apr 21, 2026
22.38
22.66
21.10
21.21
21.21
-7.46%
684,196
1.41
Apr 20, 2026
22.67
23.26
22.54
22.92
22.92
+0.17%
542,349
1.13
Apr 17, 2026
22.18
23.00
21.98
22.88
22.88
+4.91%
537,832
1.13
Apr 16, 2026
21.67
22.02
21.41
21.81
21.81
+0.60%
361,313
0.77
Apr 15, 2026
21.38
21.76
21.19
21.68
21.68
+1.40%
389,357
0.83
Apr 14, 2026
21.36
21.70
21.12
21.38
21.38
+0.09%
343,451
0.72
Apr 13, 2026
20.17
21.48
20.17
21.36
21.36
+4.86%
577,873
1.22
Apr 10, 2026
20.98
21.10
20.14
20.37
20.37
-2.40%
354,467
0.75
Apr 09, 2026
20.32
21.19
20.32
20.87
20.87
+2.30%
519,316
1.10
Apr 08, 2026
20.68
21.07
20.18
20.40
20.40
-0.87%
613,466
1.32
Apr 07, 2026
20.39
20.81
20.26
20.58
20.58
0.00%
351,463
0.76
Apr 06, 2026
20.45
20.73
20.04
20.58
20.58
+0.64%
344,067
0.74
Apr 03, 2026
19.95
20.66
19.88
20.45
20.45
0.00%
0
0.00
Apr 02, 2026
19.95
20.66
19.88
20.45
20.45
+1.04%
390,454
0.83
Apr 01, 2026
19.74
20.31
19.68
20.24
20.24
+3.32%
677,388
1.45
Mar 31, 2026
19.53
20.00
19.27
19.59
19.59
+1.93%
534,427
1.17
Mar 30, 2026
19.15
19.67
19.07
19.22
19.22
+1.10%
410,715
0.90
Mar 27, 2026
19.37
19.64
18.92
19.01
19.01
-2.66%
346,011
0.76
Mar 26, 2026
19.50
19.80
18.98
19.53
19.53
-0.20%
363,470
0.81
Mar 25, 2026
19.45
19.96
19.39
19.57
19.57
+1.77%
317,553
0.71
Mar 24, 2026
19.10
19.57
18.98
19.23
19.23
0.00%
367,780
0.83
Mar 23, 2026
20.04
20.08
19.23
19.23
19.23
-1.38%
414,859
0.94
Mar 20, 2026
19.56
19.76
19.15
19.50
19.50
-0.20%
1,133,239
2.66
Mar 19, 2026
19.10
19.82
19.06
19.54
19.54
+2.84%
582,227
1.37
Mar 18, 2026
19.21
19.47
18.97
19.00
19.00
-2.61%
650,426
1.52
Mar 17, 2026
19.48
20.00
19.48
19.51
19.51
+0.52%
635,570
1.50
Mar 16, 2026
18.93
19.46
18.65
19.41
19.41
+6.77%
737,990
1.77
Mar 13, 2026
18.23
18.46
17.81
18.18
18.18
+0.03%
604,646
1.45
Mar 12, 2026
18.58
18.58
17.03
18.18
18.18
-3.17%
901,668
2.20
Mar 11, 2026
18.91
19.50
18.52
18.77
18.77
-0.74%
548,285
1.35
Rows: