Market capitalization is the total value the stock market puts on a company: its share price multiplied by the number of shares outstanding. Each point here is the share count reported in a filing multiplied by the closing price on that filing date, adjusted for later stock splits, so the history moves when a new filing arrives rather than with each day's trading. A larger market cap means investors collectively value the company more highly; by itself it says nothing about profit or debt. Annual points keep the latest observation in each calendar year.
Amphastar Pharmaceuticals, Inc. market cap for the quarter ending 2026-07-31 was $847.36M, a 13.99% decline year-over-year.
Amphastar Pharmaceuticals, Inc. market cap for the quarter ending 2026-06-30 was $858.3M, a 19.70% decline year-over-year.
Amphastar Pharmaceuticals, Inc. market cap for the quarter ending 2026-05-01 was $965.19M, a 14.26% decline year-over-year.
Amphastar Pharmaceuticals, Inc. market cap for the quarter ending 2026-03-31 was $874.44M, a 36.72% decline year-over-year.
Amphastar Pharmaceuticals, Inc. market cap for fiscal 2026 was $847.36M.
Amphastar Pharmaceuticals, Inc. market cap for fiscal 2025 was $1.22B, a 30.78% decline from fiscal 2024.
Amphastar Pharmaceuticals, Inc. market cap for fiscal 2024 was $1.77B, a 40.53% decline from fiscal 2023.
Amphastar Pharmaceuticals, Inc. market cap for fiscal 2023 was $2.97B, a 120.54% increase from fiscal 2022.