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Amphastar Pharmaceuticals, Inc. (AMPH)
NASDAQ: AMPH · Real-Time Price · USD
26.25
-0.35 (-1.32%)
Jan 27, 2026, 4:00 PM EST - Market closed

Amphastar Pharmaceuticals Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Jan 27, 202626.3926.5825.8126.2526.25-1.32%264,507
Jan 26, 202625.9226.7125.6326.6026.602.62%316,050
Jan 23, 202626.0326.3725.8125.9225.92-0.86%269,346
Jan 22, 202626.2526.9226.1026.1526.15-0.29%231,737
Jan 21, 202625.9626.5925.9326.2226.221.04%251,622
Jan 20, 202625.6226.7525.4725.9525.95-0.46%282,570
Jan 16, 202625.9426.2325.4226.0726.070.27%284,511
Jan 15, 202627.6527.6925.9426.0026.00-6.34%583,625
Jan 14, 202628.8029.2027.6127.7627.76-3.98%472,419
Jan 13, 202629.1629.3828.4028.9128.91-1.67%345,642
Jan 12, 202628.0529.5227.3129.4029.405.98%455,592
Jan 9, 202627.7128.0227.4327.7427.74-247,198
Jan 8, 202627.4028.3427.2327.7427.741.50%302,643
Jan 7, 202627.8328.2827.1527.3327.33-1.05%342,796
Jan 6, 202626.5327.7526.5127.6227.623.37%299,567
Jan 5, 202626.2127.4526.1126.7226.720.98%418,742
Jan 2, 202626.9126.9326.0226.4626.46-1.19%405,969
Dec 31, 202527.0627.0626.6426.7826.78-0.81%218,279
Dec 30, 202526.7527.1626.7327.0027.000.78%246,950
Dec 29, 202527.0027.2326.7726.7926.79-1.22%215,206
Dec 26, 202526.7727.1726.5527.1227.121.16%229,035
Dec 24, 202526.4527.1226.4426.8126.811.36%175,168
Dec 23, 202527.2427.2626.2626.4526.45-3.18%324,703
Dec 22, 202526.5027.4426.3527.3227.322.71%474,461
Dec 19, 202526.4026.8026.3326.6026.600.38%807,026
Dec 18, 202526.0426.6225.9226.5026.501.65%340,750
Dec 17, 202525.6026.5225.4726.0726.071.80%389,839
Dec 16, 202526.1826.3125.1625.6125.61-2.66%499,486
Dec 15, 202525.7826.5025.5626.3126.314.12%472,889
Dec 12, 202526.1326.1325.2025.2725.27-2.43%341,410
Dec 11, 202525.8125.9425.4725.9025.900.74%284,907
Dec 10, 202525.6425.9125.2225.7125.710.23%483,522
Dec 9, 202525.9726.3925.5625.6525.65-1.38%414,104
Dec 8, 202526.8126.8525.9526.0126.01-2.84%300,935
Dec 5, 202527.1527.4726.6926.7726.77-1.40%323,306
Dec 4, 202527.5827.8426.9727.1527.15-1.56%404,953
Dec 3, 202526.8627.8226.7527.5827.583.41%317,346
Dec 2, 202527.4627.6226.2326.6726.67-2.84%456,357
Dec 1, 202527.4427.8227.3027.4527.45-0.90%355,915
Nov 28, 202527.4727.7827.3727.7027.701.24%208,311
Nov 26, 202527.4427.8327.2327.3627.36-1.19%410,854
Nov 25, 202527.0027.7626.9027.6927.693.67%375,501
Nov 24, 202525.9626.7925.8226.7126.712.69%349,465
Nov 21, 202525.4526.5325.4026.0126.012.56%392,921
Nov 20, 202525.5426.0124.9225.3625.36-0.04%355,832
Nov 19, 202525.8126.2825.1325.3725.37-2.05%524,386
Nov 18, 202525.8226.5725.3925.9025.90-0.46%484,851
Nov 17, 202526.0426.5425.6926.0226.02-0.15%417,693
Nov 14, 202526.1526.4725.9026.0626.06-1.18%294,122
Nov 13, 202527.6627.8626.0026.3726.37-5.25%488,815