5 DAY PERFORMANCE
-1.64%
1 MONTH PERFORMANCE
-0.47%
3 MONTH PERFORMANCE
+1.05%
6 MONTH PERFORMANCE
-29.17%
YEAR-TO-DATE PERFORMANCE
-28.27%
1 YEAR PERFORMANCE
-16.77%
Amphastar Pharmaceuticals Inc Stock Chart
Share Price History
| Date | Opening Price | Closing Price | High | Low | Volume | Market Capitalization |
|---|---|---|---|---|---|---|
| 06/26/2026 | $21.01 | $21.78 (3.66%) | $21.81 | $20.88 | 624.00 K | $987.11 M |
| 06/25/2026 | $21.00 | $21.04 (0.19%) | $22.00 | $20.79 | 481.30 K | $953.57 M |
| 06/24/2026 | $19.77 | $21.02 (6.32%) | $21.09 | $19.77 | 701.21 K | $952.67 M |
| 06/23/2026 | $18.61 | $19.53 (4.94%) | $19.58 | $18.50 | 660.90 K | $885.14 M |
| 06/22/2026 | $18.80 | $18.33 (-2.5%) | $18.90 | $18.22 | 767.44 K | $830.75 M |
| 06/18/2026 | $19.51 | $18.81 (-3.59%) | $19.66 | $18.70 | 1.33 M | $852.51 M |
| 06/17/2026 | $19.94 | $19.41 (-2.66%) | $20.26 | $19.15 | 1.01 M | $879.70 M |
| 06/16/2026 | $19.91 | $19.96 (0.25%) | $20.41 | $19.61 | 724.21 K | $904.63 M |
| 06/15/2026 | $20.11 | $19.71 (-1.99%) | $20.29 | $19.59 | 528.51 K | $893.30 M |
| 06/12/2026 | $19.90 | $20.09 (0.95%) | $20.55 | $19.90 | 377.80 K | $910.52 M |
| 06/11/2026 | $20.15 | $20.53 (1.89%) | $20.65 | $20.10 | 463.56 K | $930.46 M |
| 06/10/2026 | $20.21 | $20.29 (0.4%) | $20.77 | $19.99 | 405.20 K | $919.58 M |
| 06/09/2026 | $19.53 | $20.16 (3.23%) | $20.27 | $19.53 | 506.30 K | $913.69 M |
| 06/08/2026 | $19.75 | $19.39 (-1.82%) | $19.85 | $19.34 | 559.00 K | $878.79 M |
| 06/05/2026 | $18.86 | $19.74 (4.67%) | $20.14 | $18.85 | 750.30 K | $894.66 M |
| 06/04/2026 | $18.28 | $18.70 (2.3%) | $18.90 | $18.28 | 459.23 K | $847.52 M |
| 06/03/2026 | $18.26 | $18.12 (-0.77%) | $18.36 | $17.73 | 509.34 K | $821.23 M |
| 06/02/2026 | $18.36 | $18.45 (0.49%) | $18.67 | $18.10 | 810.64 K | $836.19 M |
| 06/01/2026 | $18.63 | $18.42 (-1.13%) | $19.01 | $18.22 | 569.70 K | $834.83 M |
| 05/29/2026 | $19.28 | $18.85 (-2.23%) | $19.46 | $18.55 | 849.10 K | $854.32 M |
| 05/28/2026 | $19.04 | $19.30 (1.37%) | $19.55 | $19.02 | 621.22 K | $874.71 M |
| 05/27/2026 | $19.31 | $19.10 (-1.09%) | $19.34 | $18.50 | 501.59 K | $865.65 M |
| 05/26/2026 | $18.45 | $18.81 (1.95%) | $19.12 | $18.45 | 670.80 K | $852.51 M |
| 05/22/2026 | $18.25 | $18.41 (0.88%) | $18.44 | $17.93 | 485.20 K | $834.38 M |
| 05/21/2026 | $18.07 | $18.16 (0.5%) | $18.37 | $17.76 | 1.66 M | $823.05 M |
| 05/20/2026 | $17.81 | $18.08 (1.52%) | $18.18 | $17.70 | 868.80 K | $819.42 M |
| 05/19/2026 | $17.28 | $17.82 (3.12%) | $17.91 | $17.00 | 725.15 K | $807.64 M |
| 05/18/2026 | $16.70 | $17.20 (2.99%) | $17.31 | $16.65 | 866.03 K | $779.54 M |
| 05/15/2026 | $17.27 | $16.87 (-2.32%) | $17.53 | $16.76 | 679.30 K | $764.58 M |
| 05/14/2026 | $17.81 | $17.30 (-2.86%) | $18.08 | $17.26 | 739.10 K | $784.07 M |
| 05/13/2026 | $17.50 | $18.32 (4.69%) | $18.57 | $17.43 | 971.20 K | $830.30 M |
| 05/12/2026 | $18.41 | $17.50 (-4.94%) | $18.58 | $17.26 | 1.22 M | $793.14 M |
| 05/11/2026 | $19.13 | $18.45 (-3.55%) | $19.41 | $18.33 | 1.36 M | $836.19 M |
| 05/08/2026 | $18.58 | $19.00 (2.26%) | $19.52 | $18.28 | 1.98 M | $861.12 M |
| 05/07/2026 | $24.01 | $24.03 (0.08%) | $24.35 | $23.87 | 373.52 K | $1.09 B |
| 05/06/2026 | $23.50 | $23.90 (1.7%) | $24.15 | $23.50 | 392.80 K | $1.08 B |
| 05/05/2026 | $22.85 | $23.39 (2.36%) | $23.46 | $22.75 | 366.95 K | $1.06 B |
| 05/04/2026 | $21.82 | $22.74 (4.22%) | $23.22 | $21.72 | 487.14 K | $1.03 B |
| 05/01/2026 | $21.98 | $21.88 (-0.45%) | $22.26 | $21.64 | 353.20 K | $991.65 M |
| 04/30/2026 | $21.63 | $21.96 (1.53%) | $22.36 | $21.57 | 407.24 K | $995.27 M |
| 04/29/2026 | $21.50 | $21.63 (0.6%) | $21.86 | $21.48 | 268.70 K | $980.31 M |
| 04/28/2026 | $21.71 | $21.82 (0.51%) | $22.04 | $21.56 | 281.23 K | $988.93 M |
| 04/27/2026 | $21.47 | $21.65 (0.84%) | $22.06 | $21.46 | 329.61 K | $981.22 M |
| 04/24/2026 | $21.05 | $21.41 (1.71%) | $21.60 | $20.77 | 429.70 K | $970.34 M |
| 04/23/2026 | $20.99 | $21.01 (0.1%) | $21.23 | $20.77 | 302.60 K | $952.22 M |
| 04/22/2026 | $21.40 | $20.99 (-1.92%) | $21.59 | $20.77 | 410.80 K | $951.31 M |
| 04/21/2026 | $22.38 | $21.21 (-5.23%) | $22.66 | $21.10 | 684.20 K | $961.28 M |
| 04/20/2026 | $22.67 | $22.92 (1.1%) | $23.26 | $22.54 | 542.35 K | $1.04 B |
| 04/17/2026 | $22.18 | $22.88 (3.16%) | $23.00 | $21.98 | 537.83 K | $1.04 B |
| 04/16/2026 | $21.67 | $21.81 (0.65%) | $22.02 | $21.41 | 361.31 K | $988.47 M |
| 04/15/2026 | $21.38 | $21.68 (1.4%) | $21.76 | $21.19 | 389.40 K | $982.58 M |
| 04/14/2026 | $21.36 | $21.38 (0.09%) | $21.70 | $21.12 | 343.50 K | $968.98 M |
| 04/13/2026 | $20.17 | $21.36 (5.9%) | $21.48 | $20.17 | 577.90 K | $968.08 M |
| 04/10/2026 | $20.98 | $20.37 (-2.91%) | $21.10 | $20.14 | 354.50 K | $923.21 M |
| 04/09/2026 | $20.32 | $20.87 (2.71%) | $21.19 | $20.32 | 519.32 K | $945.87 M |
| 04/08/2026 | $20.68 | $20.40 (-1.35%) | $21.07 | $20.18 | 613.50 K | $924.57 M |
| 04/07/2026 | $20.39 | $20.58 (0.93%) | $20.81 | $20.26 | 351.50 K | $932.73 M |
| 04/06/2026 | $20.45 | $20.58 (0.64%) | $20.73 | $20.04 | 344.10 K | $932.73 M |
| 04/02/2026 | $19.95 | $20.45 (2.51%) | $20.66 | $19.88 | 390.50 K | $926.83 M |
| 04/01/2026 | $19.74 | $20.24 (2.53%) | $20.31 | $19.68 | 677.40 K | $917.32 M |
| 03/31/2026 | $19.53 | $19.59 (0.31%) | $20.00 | $19.27 | 534.43 K | $887.86 M |
| 03/30/2026 | $19.15 | $19.22 (0.37%) | $19.67 | $19.07 | 410.72 K | $871.09 M |
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