SuperworthAmphastar Pharmaceuticals market cap AMPH
Share price times shares outstanding: what the whole company sells for, since 2014.
- Today, Oct 23, 2026
- $1.1B
- Highest close in our data
- $3B
- Aug 2023
Amphastar Pharmaceuticals is worth $1.1B at the close on Oct 23, 2026, at $25.14 a share.
That is down 6% over the last year and up 19% over five years.
Its highest close in our data was $3B in Aug 2023.
Market cap over time
Year by year
| Year | End of year | Low | High | Change |
|---|---|---|---|---|
| 2026 so far | $1.1B | $743.8M | $1.3B | −14% |
| 2025 | $1.2B | $972M | $1.8B | −31% |
| 2024 | $1.8B | $1.8B | $3B | −39% |
| 2023 | $3B | $1.4B | $3B | +119% |
| 2022 | $1.4B | $1.2B | $2B | +22% |
| 2021 | $1.1B | $820.6M | $1.1B | +17% |
| 2020 | $955.3M | $585.4M | $1B | +6% |
| 2019 | $901.2M | $808.3M | $1.2B | −2% |
| 2018 | $923.8M | $695M | $1B | +4% |
| 2017 | $884.6M | $631.3M | $890.6M | +4% |
| 2016 | $847.8M | $497.5M | $976.2M | +32% |
| 2015 | $640.6M | $516.4M | $800.6M | +21% |
| 2014 | $528.6M | $449.6M | $541.6M | n/a |
Against its peers
Companies in Drug Manufacturers - General nearest Amphastar Pharmaceuticals' size, closest first, today.
| Company | Market cap |
|---|---|
| AMPHAmphastar Pharmaceuticals | $1.1B |
| OMEROmeros | $1.2B |
| ABUSArbutus Biopharma | $831M |
| PCRXPacira BioSciences | $1.5B |
| ANABAnaptysbio | $1.5B |
| COLLCollegium Pharmaceutical | $747.5M |
| PAHCPhibro Animal Health | $1.6B |
| ANIPANI Pharmaceuticals | $1.7B |
| CRMDCorMedix | $611.9M |
| ZVRAZevra Therapeutics | $582.6M |
| IRWDIronwood Pharmaceuticals | $571.7M |
| Peer median | $1B |
What the market cap tells you
Share price times shares outstanding: what the whole company sells for today.
Size, not quality. Large caps move slower and are covered more. That is all it tells you.
More on Amphastar Pharmaceuticals
Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.