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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 31, 2025, is $25.09.
  • 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 276.19% to $25.09 now.
  • The 52-week high stock price for AMPH is $53.95, representing a 115.03% increase from the current share price, occurred on November 06, 2024.
  • The 52-week low stock price for AMPH is $20.39, indicating a -18.76% 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:
Date High Low High - Low Volume % Change
Oct 31, 2025 $25.13 $24.24 $0.89 142,897.0 +1.70%
Oct 30, 2025 $24.81 $24.02 $0.79 390,799.0 +1.73%
Oct 29, 2025 $24.70 $23.90 $0.805 363,064.0 +0.25%
Oct 28, 2025 $24.45 $23.77 $0.68 264,313.0 +0.58%
Oct 27, 2025 $24.55 $23.98 $0.57 319,217.0 -1.96%
Oct 24, 2025 $24.89 $24.46 $0.43 220,723.0 -0.81%
Oct 23, 2025 $24.87 $24.23 $0.635 309,412.0 +0.82%
Oct 22, 2025 $24.83 $23.97 $0.8625 582,621.0 +1.07%
Oct 21, 2025 $24.38 $23.73 $0.65 335,175.0 +2.23%
Oct 20, 2025 $24.10 $23.67 $0.43 255,520.0 -0.21%
Oct 17, 2025 $23.89 $23.09 $0.80 321,470.0 +2.41%
Oct 16, 2025 $23.61 $22.94 $0.665 449,608.0 +0.35%
Oct 15, 2025 $24.20 $22.94 $1.26 504,306.0 -3.02%
Oct 14, 2025 $23.98 $23.33 $0.65 282,164.0 +1.49%
Oct 13, 2025 $24.21 $23.42 $0.79 324,117.0 -0.51%
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%

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 $22.94 $4.45 7,953,315.0 -5.89%
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%
$46.55
price up icon 5.74%
drug_manufacturers_specialty_generic RDY
$13.35
price down icon 0.78%
$22.52
price down icon 0.28%
$10.38
price up icon 0.10%
$140.78
price up icon 1.95%
$448.36
price down icon 1.06%
Cap:     |  Volume (24h):