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Amphastar Pharmaceuticals, Inc. (AMPH)
NASDAQ: AMPH · Real-Time Price · USD
25.43
+0.08 (0.32%)
Oct 2, 2026, 4:00 PM EDT - Market closed

Amphastar Pharmaceuticals Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 2, 202625.4625.5525.0625.4325.430.32%372,329
Oct 1, 202625.6026.0225.3025.3525.35-1.78%528,692
Sep 30, 202626.7326.7925.7725.8125.81-3.26%504,650
Sep 29, 202627.5927.6426.5226.6826.68-2.59%626,940
Sep 28, 202625.9927.8025.9627.3927.394.82%747,864
Sep 25, 202626.2526.6325.6626.1326.13-0.53%370,895
Sep 24, 202624.8126.3124.6526.2726.275.25%568,856
Sep 23, 202624.3925.1224.2024.9624.962.63%504,549
Sep 22, 202624.6024.8324.0024.3224.32-0.65%496,729
Sep 21, 202623.5425.4123.4524.4824.483.64%563,475
Sep 18, 202623.6923.9923.5123.6223.62-0.84%1,450,179
Sep 17, 202624.0824.1823.5023.8223.82-0.54%451,995
Sep 16, 202623.6424.3923.4923.9523.951.31%502,992
Sep 15, 202623.7523.9423.5623.6423.64-1.13%347,395
Sep 14, 202623.8424.2823.5623.9123.910.55%471,954
Sep 11, 202623.6523.8023.2423.7823.781.02%400,728
Sep 10, 202623.0023.6922.7623.5423.542.17%495,998
Sep 9, 202622.8423.0722.5823.0423.040.48%343,406
Sep 8, 202622.8223.1422.3022.9322.93-1.08%451,310
Sep 4, 202623.4723.7423.0723.1823.18-2.77%626,116
Sep 3, 202623.8823.9223.0423.8423.840.42%391,242
Sep 2, 202623.0523.8323.0323.7423.743.40%436,695
Sep 1, 202622.5923.0522.5922.9622.961.91%349,054
Aug 31, 202621.8622.6521.5222.5322.532.36%271,824
Aug 28, 202621.8822.1521.6922.0122.010.59%224,528
Aug 27, 202621.6921.9721.6321.8821.88-0.64%247,746
Aug 26, 202621.8622.4421.7222.0222.020.18%395,567
Aug 25, 202621.5022.0721.4121.9821.982.14%283,723
Aug 24, 202621.6021.8121.2621.5221.52-0.37%209,562
Aug 21, 202621.6422.2021.4421.6021.60-0.37%376,557
Aug 20, 202621.3821.7621.2421.6821.68-0.28%338,696
Aug 19, 202621.6421.9921.1521.7421.741.87%410,758
Aug 18, 202621.1121.5921.0821.3421.342.30%411,799
Aug 17, 202620.9021.2320.7720.8620.86-0.24%533,504
Aug 14, 202620.0221.0719.8920.9120.913.62%305,681
Aug 13, 202620.1820.2719.8420.1820.181.00%307,442
Aug 12, 202620.1620.2219.6119.9819.98-2.15%337,108
Aug 11, 202620.0020.5720.0020.4220.420.54%361,823
Aug 10, 202620.7420.9019.5520.3120.31-2.26%645,738
Aug 7, 202622.4822.6520.4020.7820.784.90%1,299,876
Aug 6, 202620.2220.2519.6019.8119.81-2.12%526,642
Aug 5, 202620.0620.2819.8820.2420.241.71%351,591
Aug 4, 202620.1120.3819.8619.9019.90-1.58%481,599
Aug 3, 202620.1120.4619.7020.2220.221.40%413,175
Jul 31, 202620.3520.4119.6719.9419.94-2.16%367,423
Jul 30, 202620.3120.5319.9520.3820.38-0.97%355,683
Jul 29, 202620.2420.7019.9920.5820.582.13%321,443
Jul 28, 202619.3820.2719.3820.1520.155.06%390,836
Jul 27, 202618.9719.3118.9619.1819.182.46%285,916
Jul 24, 202618.9019.1218.5018.7218.72-0.79%445,682