Amphastar (AMPH) | Stock Overview & Key Data
Amphastar Performance Comparison
Stock Range
Today's Range
52 Week Range
All-Time High: $67.66 on August 7, 2023
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Key Statistics
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Financial Highlights
Quarter Income Flow
Dec 31, 2025
Annual Income Flow
2025
Peer Performance Comparison
| Company | Market Cap | 1W | 1M | 3M | 6M | YTD | 1Y | 3Y | 5Y | 10Y | 15Y | 20Y |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Amphastar
AMPH
|
953.49M Small-cap | -5.13% | -20.32% | -8.62% | -34.30% | -31.52% | -26.68% | -59.64% | 0.32% | 19.46% | 79.52% | 79.52% |
|
Zoetis
ZTS
|
49.75B Large-cap | -4.46% | -31.75% | -39.76% | -38.95% | -38.30% | -53.93% | -54.80% | -55.66% | 62.09% | 150.53% | 150.53% |
|
Haleon Plc - ADR
HLN
|
42.40B Large-cap | -6.44% | -5.63% | -17.81% | -8.31% | -12.80% | -20.18% | 9.16% | 22.27% | 22.27% | 22.27% | 22.27% |
|
Dynavax Technologies
DVAX
|
1.82B Small-cap | 0.13% | -1.15% | 40.40% | 47.90% | 0.78% | 20.90% | 39.64% | 53.92% | -21.40% | -49.68% | -74.59% |
|
Ani Pharmaceuticals
ANIP
|
1.78B Small-cap | -7.99% | -8.61% | -1.14% | -9.00% | -4.08% | 33.70% | 63.56% | 128.36% | 43.87% | -27.55% | -28.50% |
|
Perrigo Company plc
PRGO
|
1.61B Small-cap | -6.27% | -8.17% | -8.17% | -25.07% | -24.69% | -58.72% | -66.51% | -76.52% | -88.64% | -86.89% | -34.38% |
Ownership & Short Interest
Calculate Your Amphastar Investment Returns
Long-Term Investment Performance Analysis
Amphastar stock price in May 2016 was $15.78, A $1,000.00 lump sum investment in Amphastar made 10 years ago would be worth approximately $1,148.29 today, representing a positive return of 14.83%. This translates to an annualized return (CAGR) of 1.39%.
10 Years Investment Scenario (May 2016 - Jun 2026)
Investment Breakdown
Value Comparison
Disclaimer: This calculator is for informational purposes only and does not consider taxes, fees, or other costs associated with investing. Past performance does not guarantee future results.
Frequently Asked Questions
- What is AMPH's 52-week high and low?
- In the last 52 weeks, Amphastar reached a high of $31.26 (on September 2, 2025) and a low of $16.65 (on May 18, 2026).
- What is the market cap and P/E ratio for AMPH?
- Curious about Amphastar's size and valuation? Its market capitalization stands at 953.49M. When it comes to valuation, the P/E ratio (trailing twelve months) is 10.34, and the forward P/E (looking ahead) is 6.18.
- Does AMPH pay dividends? If so, what's the yield?
- As for dividends, Amphastar isn't currently offering a significant yield, or that specific data isn't available right now.
- Who are Amphastar's main competitors or similar companies to consider before investing?
When looking at Amphastar, it can be helpful to see how it compares to other players in its field. Here are a few similar companies or key competitors:
Company Mkt Cap Sector Industry 1Y Return 3Y Return Zoetis
ZTS49.75B Healthcare Drug Manufacturers - Specialty & Generic -53.93% -54.80% Haleon Plc - ADR
HLN42.40B Healthcare Drug Manufacturers - Specialty & Generic -20.18% 9.16% Dynavax Technologies
DVAX1.82B Healthcare Drug Manufacturers - Specialty & Generic 20.90% 39.64% Ani Pharmaceuticals
ANIP1.78B Healthcare Drug Manufacturers - Specialty & Generic 33.70% 63.56% Perrigo Company plc
PRGO1.61B Healthcare Drug Manufacturers - Specialty & Generic -58.72% -66.51% For a more comprehensive list, please see the Peer Performance Comparison table on this page.
- What are the key financial health indicators for Amphastar Pharmaceuticals Inc.? (e.g., ROE, Debt/Equity)
- To get a sense of Amphastar's financial health, here are a few key indicators: its Return on Equity (ROE) over the last twelve months is 12.90%, the Debt to Equity ratio from the most recent quarter is 83.16, and its Gross Profit Margin stands at 46.79%.
- What is the recent revenue and earnings growth for AMPH?
- Looking at Amphastar's growth, its revenue over the trailing twelve months (TTM) was $720M. Compared to the same quarter last year (YoY), quarterly revenue grew by -1.80%, and quarterly earnings saw a YoY growth of -35.70%.
- How much of AMPH stock is held by insiders and institutions?
- Wondering who owns Amphastar stock? Company insiders (like executives and directors) hold about 29.34% of the shares, while institutional investors (such as mutual funds and pension funds) own approximately 78.52%.
For more common questions about our data, please visit our About Data page.
Data is provided for informational purposes only. Devyara does not guarantee the accuracy of the data displayed.