Amphastar Pharmaceuticals, Inc. (AMPH)
NASDAQ: AMPH · Real-Time Price · USD
25.90
-0.12 (-0.46%)
Nov 18, 2025, 4:00 PM EST - Market closed
Amphastar Pharmaceuticals Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Nov 18, 2025 | 25.82 | 26.57 | 25.39 | 25.90 | 25.90 | -0.46% | 484,851 |
| Nov 17, 2025 | 26.04 | 26.54 | 25.69 | 26.02 | 26.02 | -0.15% | 417,693 |
| Nov 14, 2025 | 26.15 | 26.47 | 25.90 | 26.06 | 26.06 | -1.18% | 294,122 |
| Nov 13, 2025 | 27.66 | 27.86 | 26.00 | 26.37 | 26.37 | -5.25% | 488,815 |
| Nov 12, 2025 | 27.16 | 29.00 | 27.12 | 27.83 | 27.83 | 2.47% | 685,779 |
| Nov 11, 2025 | 26.00 | 27.21 | 26.00 | 27.16 | 27.16 | 3.98% | 541,178 |
| Nov 10, 2025 | 24.03 | 26.83 | 23.81 | 26.12 | 26.12 | 8.70% | 826,318 |
| Nov 7, 2025 | 26.15 | 27.40 | 23.67 | 24.03 | 24.03 | -0.83% | 809,392 |
| Nov 6, 2025 | 25.41 | 25.53 | 24.15 | 24.23 | 24.23 | -4.27% | 767,419 |
| Nov 5, 2025 | 25.07 | 25.65 | 25.07 | 25.31 | 25.31 | 0.20% | 335,208 |
| Nov 4, 2025 | 25.20 | 25.40 | 24.93 | 25.26 | 25.26 | -0.16% | 416,494 |
| Nov 3, 2025 | 25.30 | 25.85 | 24.90 | 25.30 | 25.30 | -0.78% | 361,693 |
| Oct 31, 2025 | 24.36 | 25.60 | 24.24 | 25.50 | 25.50 | 3.41% | 552,330 |
| Oct 30, 2025 | 24.24 | 24.81 | 24.02 | 24.66 | 24.66 | 1.73% | 390,822 |
| Oct 29, 2025 | 24.01 | 24.71 | 23.90 | 24.24 | 24.24 | 0.25% | 363,133 |
| Oct 28, 2025 | 23.92 | 24.45 | 23.77 | 24.18 | 24.18 | 0.58% | 264,331 |
| Oct 27, 2025 | 24.38 | 24.55 | 23.98 | 24.04 | 24.04 | -1.96% | 319,227 |
| Oct 24, 2025 | 24.72 | 24.89 | 24.46 | 24.52 | 24.52 | -0.81% | 220,779 |
| Oct 23, 2025 | 24.59 | 24.87 | 24.24 | 24.72 | 24.72 | 0.82% | 309,413 |
| Oct 22, 2025 | 24.14 | 24.83 | 23.97 | 24.52 | 24.52 | 1.07% | 582,786 |
| Oct 21, 2025 | 23.73 | 24.38 | 23.73 | 24.26 | 24.26 | 2.23% | 335,175 |
| Oct 20, 2025 | 23.78 | 24.10 | 23.67 | 23.73 | 23.73 | -0.21% | 255,762 |
| Oct 17, 2025 | 23.09 | 23.89 | 23.09 | 23.78 | 23.78 | 2.41% | 321,594 |
| Oct 16, 2025 | 23.13 | 23.61 | 22.94 | 23.22 | 23.22 | 0.35% | 449,608 |
| Oct 15, 2025 | 23.85 | 24.20 | 22.94 | 23.14 | 23.14 | -3.02% | 504,313 |
| Oct 14, 2025 | 23.33 | 23.98 | 23.33 | 23.86 | 23.86 | 1.49% | 282,166 |
| Oct 13, 2025 | 23.69 | 24.21 | 23.42 | 23.51 | 23.51 | -0.51% | 324,141 |
| Oct 10, 2025 | 25.01 | 25.02 | 23.20 | 23.63 | 23.63 | -5.37% | 607,448 |
| Oct 9, 2025 | 25.92 | 26.11 | 24.68 | 24.97 | 24.97 | -3.89% | 441,557 |
| Oct 8, 2025 | 26.00 | 26.32 | 25.57 | 25.98 | 25.98 | 0.58% | 250,038 |
| Oct 7, 2025 | 26.45 | 26.68 | 25.80 | 25.83 | 25.83 | -2.82% | 390,489 |
| Oct 6, 2025 | 26.82 | 27.07 | 26.53 | 26.58 | 26.58 | -0.64% | 241,845 |
| Oct 3, 2025 | 26.51 | 27.31 | 26.46 | 26.75 | 26.75 | 0.87% | 331,099 |
| Oct 2, 2025 | 26.86 | 27.03 | 26.46 | 26.52 | 26.52 | -1.74% | 288,366 |
| Oct 1, 2025 | 26.74 | 27.39 | 26.74 | 26.99 | 26.99 | 1.28% | 337,099 |
| Sep 30, 2025 | 26.93 | 27.27 | 26.47 | 26.65 | 26.65 | -1.00% | 392,172 |
| Sep 29, 2025 | 26.87 | 27.21 | 26.35 | 26.92 | 26.92 | 0.26% | 513,361 |
| Sep 26, 2025 | 26.62 | 26.92 | 26.34 | 26.85 | 26.85 | 1.86% | 291,264 |
| Sep 25, 2025 | 26.88 | 26.89 | 25.95 | 26.36 | 26.36 | -1.90% | 565,989 |
| Sep 24, 2025 | 27.43 | 27.62 | 26.78 | 26.87 | 26.87 | -1.97% | 302,731 |
| Sep 23, 2025 | 27.88 | 28.22 | 27.21 | 27.41 | 27.41 | -1.72% | 323,932 |
| Sep 22, 2025 | 27.88 | 28.24 | 27.61 | 27.89 | 27.89 | 0.90% | 424,678 |
| Sep 19, 2025 | 27.37 | 27.77 | 26.87 | 27.64 | 27.64 | 0.73% | 1,384,028 |
| Sep 18, 2025 | 27.09 | 27.70 | 26.90 | 27.44 | 27.44 | 1.70% | 458,903 |
| Sep 17, 2025 | 27.13 | 27.90 | 26.57 | 26.98 | 26.98 | -0.07% | 920,934 |
| Sep 16, 2025 | 27.30 | 27.51 | 26.87 | 27.00 | 27.00 | -0.99% | 497,864 |
| Sep 15, 2025 | 28.07 | 28.39 | 27.23 | 27.27 | 27.27 | -2.82% | 422,797 |
| Sep 12, 2025 | 28.86 | 28.86 | 27.91 | 28.06 | 28.06 | -2.16% | 273,671 |
| Sep 11, 2025 | 28.36 | 28.89 | 28.36 | 28.68 | 28.68 | 0.99% | 422,254 |
| Sep 10, 2025 | 29.18 | 29.26 | 28.34 | 28.40 | 28.40 | -3.17% | 309,841 |