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18.88
2.12%
0.47
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 May 26, 2026, is $18.88.
- 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 183.06% to $18.88 now.
- The 52-week high stock price for AMPH is $31.26, representing a 65.59% increase from the current share price, occurred on September 02, 2025.
- The 52-week low stock price for AMPH is $16.64, indicating a -11.84% decrease from the current share price, occurred on May 18, 2026.
- The closing price of Amphastar Pharmaceuticals Inc (AMPH) stock in the beginning of 2025 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 |
|---|---|---|---|---|---|
| May 26, 2026 | $18.88 | $18.45 | $0.425 | 74,589.0 | +2.34% |
| May 22, 2026 | $18.44 | $17.93 | $0.51 | 485,174.0 | +1.38% |
| May 21, 2026 | $18.37 | $17.75 | $0.615 | 1,656,969.0 | +0.44% |
| May 20, 2026 | $18.18 | $17.70 | $0.485 | 868,756.0 | +1.46% |
| May 19, 2026 | $17.91 | $17.00 | $0.9125 | 725,146.0 | +3.60% |
| May 18, 2026 | $17.31 | $16.64 | $0.665 | 866,025.0 | +1.96% |
| May 15, 2026 | $17.53 | $16.75 | $0.775 | 679,289.0 | -2.49% |
| May 14, 2026 | $18.08 | $17.26 | $0.8229 | 739,023.0 | -5.57% |
| May 13, 2026 | $18.57 | $17.43 | $1.14 | 971,188.0 | +4.69% |
| May 12, 2026 | $18.58 | $17.26 | $1.32 | 1,219,583.0 | -5.15% |
| May 11, 2026 | $19.41 | $18.33 | $1.08 | 1,303,115.0 | -2.89% |
| May 08, 2026 | $19.52 | $18.28 | $1.24 | 1,983,790.0 | -20.93% |
| May 07, 2026 | $24.34 | $23.87 | $0.475 | 370,078.0 | +0.54% |
| May 06, 2026 | $24.15 | $23.50 | $0.65 | 392,762.0 | +2.18% |
| May 05, 2026 | $23.46 | $22.75 | $0.71 | 366,926.0 | +2.86% |
| May 04, 2026 | $23.22 | $21.71 | $1.50 | 487,139.0 | +3.93% |
| May 01, 2026 | $22.26 | $21.64 | $0.625 | 353,120.0 | -0.36% |
| Apr 30, 2026 | $22.36 | $21.57 | $0.79 | 407,242.0 | +1.53% |
| Apr 29, 2026 | $21.86 | $21.48 | $0.38 | 266,941.0 | -0.87% |
| Apr 28, 2026 | $22.04 | $21.56 | $0.48 | 281,225.0 | +0.79% |
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 2026
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| May, 2026 | $24.34 | $16.64 | $7.70 | 13,542,672.0 | -14.21% |
| Apr, 2026 | $23.26 | $19.68 | $3.58 | 9,083,801.0 | +12.10% |
| Mar, 2026 | $21.14 | $17.03 | $4.11 | 13,831,742.0 | -3.16% |
| Feb, 2026 | $29.46 | $19.83 | $9.63 | 9,033,886.0 | -23.63% |
| Jan, 2026 | $29.52 | $25.42 | $4.10 | 6,297,265.0 | -1.08% |
Amphastar Pharmaceuticals Inc Stock (AMPH) Price History 2025
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2025 | $27.84 | $25.16 | $2.68 | 7,597,226.0 | -2.53% |
| Nov, 2025 | $29.00 | $23.67 | $5.33 | 9,049,007.0 | +8.63% |
| Oct, 2025 | $27.39 | $22.94 | $4.45 | 8,362,746.0 | -4.32% |
| 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% |
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