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23.63
5.37%
-1.34
Amphastar Pharmaceuticals Inc Stock (AMPH) Price History
The historical daily chart and data for Amphastar Pharmaceuticals Inc stock (AMPH), show that the latest closing stock price as of October 10, 2025, is $23.63.
- Amphastar Pharmaceuticals Inc all-time high stock price is $67.66, occurred on August 09, 2023.
- The lowest Amphastar Pharmaceuticals Inc stock price recorded was $6.67 on June 25, 2014. Since then, Amphastar Pharmaceuticals Inc's stock price has risen over 254.27% to $23.63 now.
- The 52-week high stock price for AMPH is $53.95, representing a 128.33% increase from the current share price, occurred on November 06, 2024.
- The 52-week low stock price for AMPH is $20.39, indicating a -13.73% decrease from the current share price, occurred on August 01, 2025.
- The closing price of Amphastar Pharmaceuticals Inc (AMPH) stock in the beginning of 2024 was $23.07. The stock closed the year at $28.02, a gain of over 21.46% for the year.
The table below shows more information about AMPH historical price data:
Daily
Weekly
Monthly
7D
30D
60D
YTD
1Y
| Date | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Oct 10, 2025 | $25.02 | $23.20 | $1.83 | 607,448.0 | -5.37% |
| Oct 09, 2025 | $26.11 | $24.68 | $1.43 | 441,557.0 | -3.89% |
| Oct 08, 2025 | $26.32 | $25.57 | $0.75 | 250,038.0 | +0.58% |
| Oct 07, 2025 | $26.68 | $25.80 | $0.88 | 390,473.0 | -2.82% |
| Oct 06, 2025 | $27.07 | $26.53 | $0.535 | 241,845.0 | -0.64% |
| Oct 03, 2025 | $27.31 | $26.46 | $0.85 | 331,099.0 | +0.87% |
| Oct 02, 2025 | $27.03 | $26.46 | $0.57 | 288,356.0 | -1.74% |
| Oct 01, 2025 | $27.39 | $26.74 | $0.65 | 337,093.0 | +1.28% |
| Sep 30, 2025 | $27.27 | $26.47 | $0.795 | 392,172.0 | -1.00% |
| Sep 29, 2025 | $27.21 | $26.34 | $0.865 | 512,496.0 | +0.26% |
| Sep 26, 2025 | $26.92 | $26.34 | $0.585 | 298,134.0 | +1.86% |
| Sep 25, 2025 | $26.89 | $25.95 | $0.94 | 565,979.0 | -1.90% |
| Sep 24, 2025 | $27.62 | $26.78 | $0.84 | 302,731.0 | -1.97% |
| Sep 23, 2025 | $28.22 | $27.21 | $1.01 | 323,932.0 | -1.72% |
| Sep 22, 2025 | $28.24 | $27.61 | $0.63 | 424,624.0 | +0.90% |
| Sep 19, 2025 | $27.77 | $26.86 | $0.905 | 1,383,908.0 | +0.73% |
| Sep 18, 2025 | $27.70 | $26.90 | $0.80 | 458,902.0 | +1.70% |
| Sep 17, 2025 | $27.90 | $26.57 | $1.33 | 920,551.0 | -0.07% |
| Sep 16, 2025 | $27.51 | $26.87 | $0.64 | 497,864.0 | -0.99% |
| Sep 15, 2025 | $28.39 | $27.23 | $1.16 | 422,795.0 | -2.82% |
| Sep 12, 2025 | $28.86 | $27.91 | $0.95 | 273,491.0 | -2.16% |
| Sep 11, 2025 | $28.89 | $28.36 | $0.53 | 422,234.0 | +0.99% |
Amphastar Pharmaceuticals Inc Stock (AMPH) Year by Year Price History
In this detailed analysis, we present a comprehensive overview of the price movements of Amphastar Pharmaceuticals Inc stock over the years. By exploring the year-by-year data, investors can gain valuable insights into the historical performance and volatility of AMPH shares. From significant milestones and fluctuations to notable trends, this in-depth examination of Amphastar Pharmaceuticals Inc stock price history provides a foundation for understanding how the company's stock has evolved over time.
Amphastar Pharmaceuticals Inc Stock (AMPH) Price History 2025
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Oct, 2025 | $27.39 | $23.20 | $4.20 | 3,495,357.0 | -11.33% |
| Sep, 2025 | $31.26 | $25.95 | $5.31 | 10,233,521.0 | -12.97% |
| Aug, 2025 | $31.23 | $20.39 | $10.84 | 13,060,640.0 | +46.16% |
| Jul, 2025 | $24.52 | $20.43 | $4.09 | 9,990,721.0 | -8.75% |
| Jun, 2025 | $27.40 | $22.81 | $4.59 | 10,316,734.0 | -10.70% |
| May, 2025 | $25.92 | $23.20 | $2.72 | 11,844,539.0 | +5.33% |
| Apr, 2025 | $29.27 | $22.64 | $6.63 | 13,298,283.0 | -15.80% |
| Mar, 2025 | $29.37 | $25.89 | $3.48 | 12,382,251.0 | +1.97% |
| Feb, 2025 | $34.39 | $27.82 | $6.57 | 10,545,190.0 | -18.47% |
| Jan, 2025 | $39.01 | $34.60 | $4.41 | 11,099,058.0 | -6.09% |
Amphastar Pharmaceuticals Inc Stock (AMPH) Price History 2024
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2024 | $46.11 | $36.80 | $9.31 | 11,753,587.0 | -18.48% |
| Nov, 2024 | $53.95 | $43.09 | $10.86 | 8,864,599.0 | -10.57% |
| Oct, 2024 | $51.84 | $45.50 | $6.34 | 6,181,025.0 | +4.12% |
| Sep, 2024 | $50.62 | $43.60 | $7.02 | 7,247,128.0 | -0.43% |
| Aug, 2024 | $49.30 | $38.42 | $10.88 | 8,332,208.0 | +11.99% |
| Jul, 2024 | $44.25 | $36.56 | $7.69 | 8,991,845.0 | +8.80% |
| Jun, 2024 | $43.49 | $39.53 | $3.96 | 6,654,536.0 | -5.50% |
| May, 2024 | $46.62 | $41.21 | $5.41 | 7,425,781.0 | +2.62% |
| Apr, 2024 | $43.97 | $38.43 | $5.54 | 7,194,165.0 | -6.06% |
| Mar, 2024 | $48.00 | $42.16 | $5.84 | 9,536,304.0 | -5.71% |
| Feb, 2024 | $56.45 | $44.58 | $11.88 | 9,097,171.0 | -12.72% |
| Jan, 2024 | $65.92 | $52.33 | $13.59 | 11,255,123.0 | -13.73% |
Amphastar Pharmaceuticals Inc Stock (AMPH) Price History 2023
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2023 | $63.67 | $54.06 | $9.61 | 9,226,713.0 | +9.82% |
| Nov, 2023 | $58.35 | $44.42 | $13.93 | 9,463,879.0 | +24.41% |
| Oct, 2023 | $48.50 | $43.78 | $4.72 | 6,909,249.0 | -1.57% |
| Sep, 2023 | $55.44 | $44.86 | $10.58 | 12,892,923.0 | -13.73% |
| Aug, 2023 | $67.66 | $51.43 | $16.23 | 8,441,845.0 | -12.16% |
| Jul, 2023 | $63.72 | $54.53 | $9.19 | 7,545,301.0 | +5.60% |
| Jun, 2023 | $58.70 | $44.55 | $14.16 | 11,258,527.0 | +29.52% |
| May, 2023 | $45.50 | $35.69 | $9.81 | 8,573,949.0 | +24.04% |
| Apr, 2023 | $44.15 | $35.62 | $8.53 | 8,031,621.0 | -4.61% |
| Mar, 2023 | $38.22 | $33.61 | $4.61 | 8,754,997.0 | +17.70% |
| Feb, 2023 | $33.13 | $29.91 | $3.22 | 4,105,630.0 | +5.29% |
| Jan, 2023 | $31.28 | $27.58 | $3.70 | 3,984,619.0 | +7.99% |
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