NASDAQ : AMPH
Amphastar Pharmaceuticals, Inc. — Price history
Healthcare · Drug Manufacturers - Specialty & Generic · United States
Last price 27.72 USD (Oct 30, 2026, 4:00 PM EDT) · Market cap 1.18B
Overview · Financial statements · Key statistics · Dividends · Company profile · Price history · Reports
Price history
Amphastar Pharmaceuticals, Inc. (AMPH) closed at 27.72 USD on 2026-10-30. Daily open, high, low, close and volume for recent sessions:
| Date | Open | High | Low | Close | Volume | Change |
|---|---|---|---|---|---|---|
| 2026-10-30 | 27.12 | 27.8 | 26.76 | 27.72 | 664,502 | +2.93% |
| 2026-10-29 | 26.84 | 27 | 26.45 | 26.93 | 371,414 | +2.28% |
| 2026-10-28 | 25.36 | 26.36 | 25.36 | 26.33 | 397,267 | +2.97% |
| 2026-10-27 | 25.38 | 25.696 | 25.29 | 25.57 | 323,927 | +0.39% |
| 2026-10-26 | 25.27 | 25.65 | 25.215 | 25.47 | 225,242 | +1.31% |
| 2026-10-23 | 25.91 | 25.91 | 24.62 | 25.14 | 483,121 | -3.46% |
| 2026-10-22 | 26.25 | 26.5 | 25.92 | 26.04 | 315,091 | -0.61% |
| 2026-10-21 | 25.69 | 26.35 | 25.51 | 26.2 | 390,205 | +1.00% |
| 2026-10-20 | 26.24 | 26.61 | 25.82 | 25.94 | 361,336 | -0.77% |
| 2026-10-19 | 25.63 | 26.31 | 25.63 | 26.14 | 299,510 | +1.04% |
| 2026-10-16 | 26.61 | 26.61 | 25.515 | 25.87 | 351,983 | -2.08% |
| 2026-10-15 | 26.38 | 27.1 | 26.13 | 26.42 | 352,334 | +1.30% |
| 2026-10-14 | 25.89 | 26.57 | 25.89 | 26.08 | 364,651 | +0.12% |
| 2026-10-13 | 26.91 | 27 | 26.03 | 26.05 | 326,542 | -2.65% |
| 2026-10-12 | 26.62 | 26.86 | 26.51 | 26.76 | 362,817 | +0.53% |
| 2026-10-09 | 25.73 | 26.79 | 25.65 | 26.62 | 269,255 | +3.14% |
| 2026-10-08 | 25.39 | 26.14 | 25.095 | 25.81 | 422,785 | +1.06% |
| 2026-10-07 | 25.91 | 26.17 | 25.285 | 25.54 | 774,800 | -1.43% |
| 2026-10-06 | 25.54 | 26.13 | 25.03 | 25.91 | 466,112 | +2.13% |
| 2026-10-05 | 25.43 | 25.7 | 25.17 | 25.37 | 453,634 | -0.24% |
| 2026-10-02 | 25.46 | 25.545 | 25.06 | 25.43 | 372,329 | +0.32% |
| 2026-10-01 | 25.6 | 26.02 | 25.3 | 25.35 | 528,692 | -1.78% |
| 2026-09-30 | 26.73 | 26.79 | 25.77 | 25.81 | 504,650 | -3.26% |
| 2026-09-29 | 27.585 | 27.64 | 26.515 | 26.68 | 626,940 | -2.59% |
| 2026-09-28 | 25.99 | 27.8 | 25.955 | 27.39 | 747,864 | +4.82% |
| 2026-09-25 | 26.25 | 26.63 | 25.66 | 26.13 | 370,895 | -0.53% |
| 2026-09-24 | 24.81 | 26.31 | 24.645 | 26.27 | 568,856 | +5.25% |
| 2026-09-23 | 24.39 | 25.115 | 24.2 | 24.96 | 504,549 | +2.63% |
| 2026-09-22 | 24.6 | 24.83 | 24 | 24.32 | 496,729 | -0.65% |
| 2026-09-21 | 23.54 | 25.41 | 23.45 | 24.48 | 563,475 | +3.64% |
| 2026-09-18 | 23.69 | 23.99 | 23.51 | 23.62 | 1,450,179 | -0.84% |
| 2026-09-17 | 24.08 | 24.18 | 23.495 | 23.82 | 451,995 | -0.54% |
| 2026-09-16 | 23.64 | 24.39 | 23.49 | 23.95 | 502,992 | +1.31% |
| 2026-09-15 | 23.75 | 23.938 | 23.56 | 23.64 | 347,395 | -1.13% |
| 2026-09-14 | 23.84 | 24.28 | 23.555 | 23.91 | 471,954 | +0.55% |
| 2026-09-11 | 23.65 | 23.8 | 23.24 | 23.78 | 400,728 | +1.02% |
| 2026-09-10 | 23 | 23.69 | 22.755 | 23.54 | 495,998 | +2.17% |
| 2026-09-09 | 22.84 | 23.07 | 22.575 | 23.04 | 343,406 | +0.48% |
| 2026-09-08 | 22.82 | 23.14 | 22.3 | 22.93 | 451,310 | -1.08% |
| 2026-09-04 | 23.47 | 23.74 | 23.07 | 23.18 | 626,116 | -2.77% |
| 2026-09-03 | 23.875 | 23.92 | 23.04 | 23.84 | 391,242 | +0.42% |
| 2026-09-02 | 23.05 | 23.83 | 23.028 | 23.74 | 436,695 | +3.40% |
| 2026-09-01 | 22.59 | 23.05 | 22.59 | 22.96 | 349,054 | +1.91% |
| 2026-08-31 | 21.86 | 22.65 | 21.52 | 22.53 | 271,824 | +2.36% |
| 2026-08-28 | 21.88 | 22.15 | 21.69 | 22.01 | 224,528 | +0.59% |
| 2026-08-27 | 21.69 | 21.97 | 21.625 | 21.88 | 247,746 | -0.64% |
| 2026-08-26 | 21.86 | 22.435 | 21.715 | 22.02 | 395,567 | +0.18% |
| 2026-08-25 | 21.5 | 22.07 | 21.405 | 21.98 | 283,723 | +2.14% |
| 2026-08-24 | 21.6 | 21.81 | 21.26 | 21.52 | 209,562 | -0.37% |
| 2026-08-21 | 21.64 | 22.2 | 21.44 | 21.6 | 376,557 | -0.37% |
| 2026-08-20 | 21.38 | 21.76 | 21.24 | 21.68 | 338,696 | -0.28% |
| 2026-08-19 | 21.64 | 21.99 | 21.145 | 21.74 | 410,758 | +1.87% |
| 2026-08-18 | 21.11 | 21.59 | 21.075 | 21.34 | 411,799 | +2.30% |
| 2026-08-17 | 20.9 | 21.23 | 20.77 | 20.86 | 533,504 | -0.24% |
| 2026-08-14 | 20.02 | 21.07 | 19.89 | 20.91 | 305,681 | +3.62% |
| 2026-08-13 | 20.18 | 20.27 | 19.84 | 20.18 | 307,442 | +1.00% |
| 2026-08-12 | 20.16 | 20.215 | 19.61 | 19.98 | 337,108 | -2.15% |
| 2026-08-11 | 20 | 20.57 | 20 | 20.42 | 361,823 | +0.54% |
| 2026-08-10 | 20.74 | 20.9 | 19.55 | 20.31 | 645,738 | -2.26% |
| 2026-08-07 | 22.48 | 22.645 | 20.4 | 20.78 | 1,299,876 | +4.90% |
| 2026-08-06 | 20.22 | 20.25 | 19.602 | 19.81 | 526,642 | -2.12% |
| 2026-08-05 | 20.06 | 20.28 | 19.88 | 20.24 | 351,591 | +1.71% |
| 2026-08-04 | 20.11 | 20.38 | 19.86 | 19.9 | 481,599 | -1.58% |
| 2026-08-03 | 20.11 | 20.455 | 19.7 | 20.22 | 413,175 | +1.40% |
| 2026-07-31 | 20.35 | 20.41 | 19.665 | 19.94 | 367,423 | -2.16% |
| 2026-07-30 | 20.31 | 20.525 | 19.95 | 20.38 | 355,683 | -0.97% |
| 2026-07-29 | 20.24 | 20.7 | 19.985 | 20.58 | 321,443 | +2.13% |
| 2026-07-28 | 19.38 | 20.27 | 19.38 | 20.15 | 390,836 | +5.06% |
| 2026-07-27 | 18.97 | 19.31 | 18.96 | 19.18 | 285,916 | +2.46% |
| 2026-07-24 | 18.9 | 19.12 | 18.5 | 18.72 | 445,682 | -0.79% |
| 2026-07-23 | 19.08 | 19.34 | 18.73 | 18.87 | 650,429 | -2.23% |
| 2026-07-22 | 19.71 | 19.95 | 19.2 | 19.3 | 409,241 | -1.48% |
| 2026-07-21 | 19.42 | 19.89 | 19.42 | 19.59 | 620,355 | -0.20% |
| 2026-07-20 | 19.78 | 19.91 | 19.518 | 19.63 | 437,415 | -0.58% |
| 2026-07-17 | 19.84 | 20.35 | 19.63 | 19.745 | 338,456 | -0.58% |
| 2026-07-16 | 19.4 | 20.14 | 19.4 | 19.86 | 416,837 | +2.37% |
| 2026-07-15 | 18.87 | 19.5 | 18.83 | 19.4 | 356,066 | +3.16% |
| 2026-07-14 | 19.1 | 19.385 | 18.41 | 18.805 | 334,746 | -2.51% |
| 2026-07-13 | 19 | 19.68 | 18.95 | 19.29 | 384,388 | +3.04% |
| 2026-07-10 | 18.97 | 19.15 | 18.605 | 18.72 | 311,036 | -1.58% |
| 2026-07-09 | 18.86 | 19.13 | 18.61 | 19.02 | 445,978 | +0.74% |
| 2026-07-08 | 19.96 | 19.96 | 18.52 | 18.88 | 438,663 | -5.98% |
| 2026-07-07 | 20.06 | 20.28 | 19.74 | 20.08 | 449,984 | +2.40% |
| 2026-07-06 | 19.48 | 20.005 | 19.08 | 19.61 | 313,781 | -0.15% |
| 2026-07-02 | 20.35 | 20.35 | 19.63 | 19.64 | 315,753 | -2.29% |
| 2026-07-01 | 20.32 | 20.535 | 19.905 | 20.1 | 422,109 | -0.40% |
| 2026-06-30 | 20.71 | 20.71 | 19.86 | 20.18 | 400,207 | -2.56% |
| 2026-06-29 | 21.12 | 21.235 | 19.66 | 20.71 | 727,089 | -4.91% |
| 2026-06-26 | 21.01 | 21.805 | 20.88 | 21.78 | 623,977 | +3.52% |
| 2026-06-25 | 21 | 22 | 20.79 | 21.04 | 481,265 | +0.10% |
| 2026-06-24 | 19.77 | 21.09 | 19.77 | 21.02 | 701,214 | +7.63% |
| 2026-06-23 | 18.61 | 19.58 | 18.5 | 19.53 | 660,872 | +6.55% |
| 2026-06-22 | 18.8 | 18.895 | 18.22 | 18.33 | 767,439 | -2.55% |
| 2026-06-18 | 19.51 | 19.66 | 18.7 | 18.81 | 1,327,603 | -3.09% |
| 2026-06-17 | 19.94 | 20.26 | 19.15 | 19.41 | 1,008,517 | -2.76% |
| 2026-06-16 | 19.91 | 20.405 | 19.615 | 19.96 | 724,208 | +1.27% |
| 2026-06-15 | 20.11 | 20.285 | 19.59 | 19.71 | 528,512 | -1.89% |
| 2026-06-12 | 19.9 | 20.55 | 19.9 | 20.09 | 377,788 | -2.14% |
| 2026-06-11 | 20.15 | 20.645 | 20.1 | 20.53 | 463,562 | +1.18% |
| 2026-06-10 | 20.21 | 20.77 | 19.985 | 20.29 | 405,165 | +0.64% |
| 2026-06-09 | 19.53 | 20.27 | 19.53 | 20.16 | 506,256 | +3.97% |
| 2026-06-08 | 19.75 | 19.845 | 19.335 | 19.39 | 558,989 | -1.77% |
| 2026-06-05 | 18.86 | 20.142 | 18.85 | 19.74 | 750,284 | +5.56% |
| 2026-06-04 | 18.28 | 18.895 | 18.28 | 18.7 | 459,231 | +3.20% |
| 2026-06-03 | 18.26 | 18.36 | 17.73 | 18.12 | 509,337 | -1.79% |
| 2026-06-02 | 18.36 | 18.67 | 18.1 | 18.45 | 810,643 | +0.16% |
| 2026-06-01 | 18.63 | 19.01 | 18.22 | 18.42 | 569,685 | -2.28% |
| 2026-05-29 | 19.28 | 19.46 | 18.55 | 18.85 | 849,067 | -2.33% |
| 2026-05-28 | 19.04 | 19.55 | 19.015 | 19.3 | 621,218 | +1.05% |
| 2026-05-27 | 19.31 | 19.335 | 18.5 | 19.1 | 501,594 | +1.54% |
| 2026-05-26 | 18.45 | 19.12 | 18.45 | 18.81 | 670,766 | +2.17% |
| 2026-05-22 | 18.25 | 18.44 | 17.93 | 18.41 | 485,197 | +1.38% |
| 2026-05-21 | 18.07 | 18.37 | 17.755 | 18.16 | 1,656,978 | +0.44% |
| 2026-05-20 | 17.81 | 18.185 | 17.7 | 18.08 | 868,756 | +1.46% |
| 2026-05-19 | 17.28 | 17.913 | 17 | 17.82 | 725,146 | +3.60% |
| 2026-05-18 | 16.7 | 17.31 | 16.645 | 17.2 | 866,027 | +1.96% |
| 2026-05-15 | 17.27 | 17.53 | 16.755 | 16.87 | 679,289 | -2.49% |
| 2026-05-14 | 17.81 | 18.083 | 17.26 | 17.3 | 739,074 | -5.57% |
| 2026-05-13 | 17.5 | 18.565 | 17.43 | 18.32 | 971,189 | +4.69% |
| 2026-05-12 | 18.41 | 18.58 | 17.26 | 17.5 | 1,219,603 | -5.15% |