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Amphastar Pharmaceuticals, Inc. (AMPH)
NASDAQ: AMPH · Real-Time Price · USD
26.77
-0.38 (-1.40%)
At close: Dec 5, 2025, 4:00 PM EST
26.00
-0.77 (-2.88%)
After-hours: Dec 5, 2025, 6:34 PM EST

Amphastar Pharmaceuticals Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
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
Nov 12, 202527.1629.0027.1227.8327.832.47%685,779
Nov 11, 202526.0027.2126.0027.1627.163.98%541,178
Nov 10, 202524.0326.8323.8126.1226.128.70%826,318
Nov 7, 202526.1527.4023.6724.0324.03-0.83%809,392
Nov 6, 202525.4125.5324.1524.2324.23-4.27%767,419
Nov 5, 202525.0725.6525.0725.3125.310.20%335,208
Nov 4, 202525.2025.4024.9325.2625.26-0.16%416,494
Nov 3, 202525.3025.8524.9025.3025.30-0.78%361,693
Oct 31, 202524.3625.6024.2425.5025.503.41%552,330
Oct 30, 202524.2424.8124.0224.6624.661.73%390,822
Oct 29, 202524.0124.7123.9024.2424.240.25%363,133
Oct 28, 202523.9224.4523.7724.1824.180.58%264,331
Oct 27, 202524.3824.5523.9824.0424.04-1.96%319,227
Oct 24, 202524.7224.8924.4624.5224.52-0.81%220,779
Oct 23, 202524.5924.8724.2424.7224.720.82%309,413
Oct 22, 202524.1424.8323.9724.5224.521.07%582,786
Oct 21, 202523.7324.3823.7324.2624.262.23%335,175
Oct 20, 202523.7824.1023.6723.7323.73-0.21%255,762
Oct 17, 202523.0923.8923.0923.7823.782.41%321,594
Oct 16, 202523.1323.6122.9423.2223.220.35%449,608
Oct 15, 202523.8524.2022.9423.1423.14-3.02%504,313
Oct 14, 202523.3323.9823.3323.8623.861.49%282,166
Oct 13, 202523.6924.2123.4223.5123.51-0.51%324,141
Oct 10, 202525.0125.0223.2023.6323.63-5.37%607,448
Oct 9, 202525.9226.1124.6824.9724.97-3.89%441,557
Oct 8, 202526.0026.3225.5725.9825.980.58%250,038
Oct 7, 202526.4526.6825.8025.8325.83-2.82%390,489
Oct 6, 202526.8227.0726.5326.5826.58-0.64%241,845
Oct 3, 202526.5127.3126.4626.7526.750.87%331,099
Oct 2, 202526.8627.0326.4626.5226.52-1.74%288,366
Oct 1, 202526.7427.3926.7426.9926.991.28%337,099
Sep 30, 202526.9327.2726.4726.6526.65-1.00%392,172
Sep 29, 202526.8727.2126.3526.9226.920.26%513,361
Sep 26, 202526.6226.9226.3426.8526.851.86%291,264