Amphastar Pharmaceuticals Inc. trailing returns
Amphastar Pharmaceuticals Inc.'s 10-year return is +3.5% a year (CAGR) (+40.6% cumulative). How Amphastar Pharmaceuticals Inc. (AMPH) has performed over the last day, week, month and year, over 5 and 10 years, and since inception, through October 20, 2026 — price return and dividends side by side, with the worst drop inside each window.
Trailing returns by period#
To 2026-10-20. Price return + dividends = total return. Per year (CAGR) for windows of a year or more, with the cumulative total return beneath. Worst drop: the deepest fall in the price from a high inside the window, and when it bottomed.
| Period | Price | DivsDividends | Total | Worst drop |
|---|---|---|---|---|
| 1 day | -0.8% | +0.0% | -0.8% | — |
| 5 days | -0.4% | +0.0% | -0.4% | -2.1%Oct 16 |
| 1 month | +9.8% | +0.0% | +9.8% | -7.4%Oct 1 |
| YTD | -3.1% | +0.0% | -3.1% | -42.6%May 15 |
| 1 year | +9.3% | +0.0% | +9.3% | -42.6%May 2026 |
| 5 years | +5.9% | +0.0% | +5.9%+33.4% | -74.0%May 2026 |
| 10 years | +3.5% | +0.0% | +3.5%+40.6% | -74.0%May 2026 |
| Since inception (2014) | +9.2% | +0.0% | +9.2%+196.5% | -74.0%May 2026 |
Growth of AMPH#
Actual level with dividends reinvested (solid); dashed lines are each window's constant-rate path from start to today.
- 5 years+5.9%/year · +33.4%
- 10 years+3.5%/year · +40.6%
Methodology#
Trailing returns measure from the closest close about N years before the latest close (2026-10-20). Cumulative return is the total change over the window; annualized return is the compound annual growth rate (CAGR), shown for windows of a year or more. Price return is the change in AMPH's closing price; total return reinvests dividends (from its split- and dividend-adjusted closes); the dividends column is the difference between the two. The worst drop is the largest fall in the closing price from a high to a later low inside the window, the way a drawdown is usually quoted. See the year-by-year returns for the calendar breakdown. Past performance does not predict future returns; not investment advice.
FAQ#
- What is Amphastar Pharmaceuticals Inc.'s 10-year return?
- Over the last 10 years, Amphastar Pharmaceuticals Inc. (AMPH) returned about +3.5% a year annualized (+40.6% cumulative total return).
- What is Amphastar Pharmaceuticals Inc.'s return since inception?
- Since 2014, Amphastar Pharmaceuticals Inc. (AMPH) has compounded at about +9.2% a year — +196.5% in total.