5 DAY PERFORMANCE
-3.01%
1 MONTH PERFORMANCE
+11.32%
3 MONTH PERFORMANCE
-8.58%
6 MONTH PERFORMANCE
+2.92%
YEAR-TO-DATE PERFORMANCE
-27.96%
1 YEAR PERFORMANCE
-38.93%
Amphastar Pharmaceuticals, Inc. Stock Chart
Share Price History
| Date | Opening Price | Closing Price | High | Low | Volume | Market Capitalization |
|---|---|---|---|---|---|---|
| 12/05/2025 | $27.15 | $26.77 (-1.4%) | $27.47 | $26.69 | 323.30 K | $1.24 B |
| 12/04/2025 | $27.58 | $27.15 (-1.56%) | $27.84 | $26.97 | 404.95 K | $1.26 B |
| 12/03/2025 | $26.86 | $27.58 (2.68%) | $27.82 | $26.75 | 317.35 K | $1.28 B |
| 12/02/2025 | $27.46 | $26.67 (-2.88%) | $27.62 | $26.23 | 456.40 K | $1.24 B |
| 12/01/2025 | $27.44 | $27.45 (0.04%) | $27.82 | $27.30 | 355.92 K | $1.28 B |
| 11/28/2025 | $27.47 | $27.70 (0.84%) | $27.78 | $27.37 | 208.31 K | $1.29 B |
| 11/26/2025 | $27.44 | $27.36 (-0.29%) | $27.83 | $27.23 | 410.90 K | $1.27 B |
| 11/25/2025 | $27.00 | $27.69 (2.56%) | $27.76 | $26.90 | 375.51 K | $1.29 B |
| 11/24/2025 | $25.96 | $26.71 (2.89%) | $26.79 | $25.82 | 349.50 K | $1.24 B |
| 11/21/2025 | $25.45 | $26.01 (2.2%) | $26.53 | $25.40 | 392.92 K | $1.21 B |
| 11/20/2025 | $25.54 | $25.36 (-0.7%) | $26.01 | $24.92 | 355.83 K | $1.18 B |
| 11/19/2025 | $25.81 | $25.37 (-1.7%) | $26.28 | $25.13 | 524.40 K | $1.18 B |
| 11/18/2025 | $25.82 | $25.90 (0.31%) | $26.57 | $25.39 | 484.90 K | $1.20 B |
| 11/17/2025 | $26.04 | $26.02 (-0.08%) | $26.54 | $25.69 | 417.70 K | $1.21 B |
| 11/14/2025 | $26.15 | $26.06 (-0.34%) | $26.47 | $25.90 | 294.12 K | $1.21 B |
| 11/13/2025 | $27.66 | $26.37 (-4.66%) | $27.86 | $26.00 | 488.82 K | $1.23 B |
| 11/12/2025 | $27.16 | $27.83 (2.47%) | $29.00 | $27.12 | 685.80 K | $1.29 B |
| 11/11/2025 | $26.00 | $27.16 (4.46%) | $27.21 | $26.00 | 541.20 K | $1.26 B |
| 11/10/2025 | $24.03 | $26.12 (8.7%) | $26.83 | $23.81 | 826.32 K | $1.21 B |
| 11/07/2025 | $26.15 | $24.03 (-8.11%) | $27.40 | $23.67 | 809.40 K | $1.12 B |
| 11/06/2025 | $25.41 | $24.23 (-4.64%) | $25.53 | $24.15 | 767.42 K | $1.13 B |
| 11/05/2025 | $25.07 | $25.31 (0.96%) | $25.65 | $25.07 | 335.21 K | $1.18 B |
| 11/04/2025 | $25.20 | $25.26 (0.24%) | $25.40 | $24.93 | 416.50 K | $1.17 B |
| 11/03/2025 | $25.30 | $25.30 (0%) | $25.85 | $24.90 | 361.70 K | $1.18 B |
| 10/31/2025 | $24.36 | $25.50 (4.68%) | $25.60 | $24.24 | 552.33 K | $1.20 B |
| 10/30/2025 | $24.24 | $24.66 (1.73%) | $24.81 | $24.02 | 390.82 K | $1.16 B |
| 10/29/2025 | $24.01 | $24.24 (0.96%) | $24.71 | $23.90 | 363.13 K | $1.14 B |
| 10/28/2025 | $23.92 | $24.18 (1.09%) | $24.45 | $23.77 | 264.33 K | $1.14 B |
| 10/27/2025 | $24.38 | $24.04 (-1.39%) | $24.55 | $23.98 | 319.23 K | $1.13 B |
| 10/24/2025 | $24.72 | $24.52 (-0.81%) | $24.89 | $24.46 | 220.80 K | $1.15 B |
| 10/23/2025 | $24.59 | $24.72 (0.53%) | $24.87 | $24.24 | 309.41 K | $1.16 B |
| 10/22/2025 | $24.14 | $24.52 (1.57%) | $24.83 | $23.97 | 582.80 K | $1.15 B |
| 10/21/2025 | $23.73 | $24.26 (2.23%) | $24.38 | $23.73 | 335.20 K | $1.14 B |
| 10/20/2025 | $23.78 | $23.73 (-0.21%) | $24.10 | $23.67 | 255.76 K | $1.11 B |
| 10/17/2025 | $23.09 | $23.78 (2.99%) | $23.89 | $23.09 | 321.59 K | $1.12 B |
| 10/16/2025 | $23.13 | $23.22 (0.39%) | $23.61 | $22.94 | 449.61 K | $1.09 B |
| 10/15/2025 | $23.85 | $23.14 (-2.98%) | $24.20 | $22.94 | 504.31 K | $1.09 B |
| 10/14/2025 | $23.33 | $23.86 (2.27%) | $23.98 | $23.33 | 282.20 K | $1.12 B |
| 10/13/2025 | $23.69 | $23.51 (-0.76%) | $24.21 | $23.42 | 324.14 K | $1.10 B |
| 10/10/2025 | $25.01 | $23.63 (-5.52%) | $25.02 | $23.20 | 607.45 K | $1.11 B |
| 10/09/2025 | $25.92 | $24.97 (-3.67%) | $26.11 | $24.68 | 441.60 K | $1.17 B |
| 10/08/2025 | $26.00 | $25.98 (-0.08%) | $26.32 | $25.57 | 250.04 K | $1.22 B |
| 10/07/2025 | $26.45 | $25.83 (-2.34%) | $26.68 | $25.80 | 390.50 K | $1.21 B |
| 10/06/2025 | $26.82 | $26.58 (-0.89%) | $27.07 | $26.53 | 241.85 K | $1.25 B |
| 10/03/2025 | $26.51 | $26.75 (0.91%) | $27.31 | $26.46 | 331.10 K | $1.26 B |
| 10/02/2025 | $26.86 | $26.52 (-1.27%) | $27.03 | $26.46 | 288.40 K | $1.25 B |
| 10/01/2025 | $26.74 | $26.99 (0.93%) | $27.39 | $26.74 | 337.10 K | $1.27 B |
| 09/30/2025 | $26.93 | $26.65 (-1.04%) | $27.27 | $26.47 | 392.20 K | $1.25 B |
| 09/29/2025 | $26.87 | $26.92 (0.19%) | $27.21 | $26.35 | 513.40 K | $1.26 B |
| 09/26/2025 | $26.62 | $26.85 (0.86%) | $26.92 | $26.34 | 291.30 K | $1.26 B |
| 09/25/2025 | $26.88 | $26.36 (-1.93%) | $26.89 | $25.95 | 566.00 K | $1.24 B |
| 09/24/2025 | $27.43 | $26.87 (-2.04%) | $27.62 | $26.78 | 302.73 K | $1.26 B |
| 09/23/2025 | $27.88 | $27.41 (-1.69%) | $28.22 | $27.21 | 323.93 K | $1.29 B |
| 09/22/2025 | $27.88 | $27.89 (0.04%) | $28.24 | $27.61 | 424.70 K | $1.31 B |
| 09/19/2025 | $27.37 | $27.64 (0.99%) | $27.77 | $26.87 | 1.38 M | $1.30 B |
| 09/18/2025 | $27.09 | $27.44 (1.29%) | $27.70 | $26.90 | 458.90 K | $1.29 B |
| 09/17/2025 | $27.13 | $26.98 (-0.55%) | $27.90 | $26.57 | 920.93 K | $1.27 B |
| 09/16/2025 | $27.30 | $27.00 (-1.1%) | $27.51 | $26.87 | 497.90 K | $1.27 B |
| 09/15/2025 | $28.07 | $27.27 (-2.85%) | $28.39 | $27.23 | 422.80 K | $1.28 B |
| 09/12/2025 | $28.86 | $28.06 (-2.77%) | $28.86 | $27.91 | 273.67 K | $1.32 B |
| 09/11/2025 | $28.36 | $28.68 (1.13%) | $28.89 | $28.36 | 422.30 K | $1.35 B |
| 09/10/2025 | $29.18 | $28.40 (-2.67%) | $29.26 | $28.34 | 309.84 K | $1.33 B |
| 09/09/2025 | $29.26 | $29.33 (0.24%) | $29.43 | $28.99 | 379.40 K | $1.38 B |
| 09/08/2025 | $29.30 | $29.26 (-0.14%) | $29.41 | $28.49 | 385.70 K | $1.37 B |
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