Seasonality
AMPH seasonality — Amphstar Pharmaceuticals, Inc.
Over the last 11 years, AMPH's strongest month on average has been June (+5.2%) and its weakest February (-4.6%).
Average return by month
Month-by-month statistics
| Month | Avg | Median | Up % | Best | Worst | Yrs |
|---|---|---|---|---|---|---|
| Jan | -2.86% | -2.54% | 20% | +14.4% | -14.5% | 10 |
| Feb | -4.58% | -2.68% | 30% | +20.0% | -23.6% | 10 |
| Mar | +1.94% | -0.60% | 50% | +29.6% | -17.8% | 10 |
| Apr | +0.53% | +0.31% | 50% | +14.2% | -15.8% | 10 |
| May | +2.62% | +5.02% | 70% | +24.0% | -17.2% | 10 |
| Jun | +5.20% | +5.59% | 60% | +29.5% | -10.7% | 10 |
| Jul | +1.15% | +1.36% | 50% | +14.3% | -10.9% | 10 |
| Aug | +4.67% | +5.28% | 60% | +46.2% | -20.8% | 10 |
| Sep | -2.77% | -4.19% | 30% | +14.6% | -13.7% | 10 |
| Oct | +1.02% | -0.22% | 50% | +10.0% | -6.7% | 10 |
| Nov | +4.85% | +4.71% | 67% | +24.4% | -10.6% | 9 |
| Dec | -0.44% | -2.55% | 30% | +19.1% | -17.8% | 10 |
Monthly returns heat map — AMPH
price return, %| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -1.1 | -23.6 | -3.2 | 12.1 | -14.2 | 7.1 | -1.2 | 13.0 | 14.6 | 7.4 | 2.8 | +6.4% | |
| 2025 | -6.1 | -18.5 | 2.0 | -15.8 | 5.3 | -10.7 | -8.8 | 46.2 | -13.0 | -4.3 | 8.6 | -3.3 | -27.9% |
| 2024 | -13.7 | -12.7 | -5.7 | -6.1 | 2.6 | -5.5 | 8.8 | 12.0 | -0.4 | 4.1 | -10.6 | -17.8 | -40.0% |
| 2023 | 8.0 | 5.3 | 17.7 | -4.6 | 24.0 | 29.5 | 5.6 | -12.2 | -13.7 | -1.6 | 24.4 | 9.8 | +120.7% |
| 2022 | -0.9 | 20.0 | 29.6 | -1.2 | 4.7 | -6.3 | 7.5 | -20.8 | -5.1 | 10.0 | -4.6 | -5.0 | +20.3% |
| 2021 | -9.6 | -3.6 | 4.5 | -5.0 | 8.7 | 6.5 | 3.9 | -6.2 | -3.3 | -1.7 | 4.7 | 19.1 | +15.8% |
| 2020 | -2.0 | -18.6 | -3.6 | 14.2 | 10.0 | 20.5 | -10.9 | 1.8 | -8.0 | 4.5 | -9.3 | 13.2 | +4.2% |
| 2019 | 14.4 | 9.2 | -17.8 | 5.7 | -10.8 | 9.7 | -4.5 | 11.5 | -11.7 | -2.6 | 1.0 | -1.1 | -3.1% |
| 2018 | -3.1 | -1.5 | 2.1 | 1.8 | -17.2 | -3.4 | 14.3 | 8.8 | 1.4 | -6.7 | 21.0 | -8.4 | +3.4% |
| 2017 | -14.5 | -1.8 | -6.3 | 4.1 | 13.1 | 4.6 | -3.2 | -7.3 | 11.6 | 1.1 | 8.4 | -1.8 | +4.5% |
| 2016 | -9.1 |