Seasonality
ALKS seasonality — Alkermes plc
Over the last 11 years, ALKS's strongest month on average has been January (+5.1%) and its weakest April (-4.4%).
Average return by month
Month-by-month statistics
| Month | Avg | Median | Up % | Best | Worst | Yrs |
|---|---|---|---|---|---|---|
| Jan | +5.13% | +7.41% | 70% | +21.1% | -14.7% | 10 |
| Feb | +1.42% | +0.53% | 50% | +19.7% | -11.2% | 10 |
| Mar | -0.18% | +2.54% | 60% | +17.5% | -30.8% | 10 |
| Apr | -4.40% | -4.80% | 30% | +17.8% | -23.6% | 10 |
| May | +3.09% | +3.23% | 70% | +25.2% | -29.0% | 10 |
| Jun | +4.77% | +3.82% | 70% | +24.2% | -12.8% | 10 |
| Jul | -1.96% | -6.30% | 40% | +13.4% | -14.1% | 10 |
| Aug | +0.04% | -2.19% | 40% | +20.8% | -9.4% | 10 |
| Sep | -3.49% | -2.83% | 30% | +3.6% | -13.8% | 10 |
| Oct | -1.74% | -1.86% | 40% | +11.9% | -13.6% | 10 |
| Nov | +0.79% | +7.24% | 56% | +12.9% | -27.6% | 9 |
| Dec | +0.99% | +1.89% | 50% | +14.9% | -19.0% | 10 |
Monthly returns heat map — ALKS
price return, %| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 21.1 | -11.2 | 17.5 | -4.7 | 25.2 | 24.2 | -6.5 | -4.1 | -13.8 | 11.9 | 1.2 | +64.0% | |
| 2025 | 9.6 | 8.9 | -3.8 | -12.9 | 6.4 | -6.5 | -7.4 | 9.4 | 3.6 | 2.3 | -3.6 | -5.4 | -2.7% |
| 2024 | -2.5 | 9.8 | -8.8 | -9.3 | -4.7 | 3.0 | 13.4 | 4.1 | -1.6 | -8.2 | 12.9 | -0.9 | +3.7% |
| 2023 | 9.6 | -6.6 | 5.4 | 1.3 | 1.3 | 8.2 | -6.5 | -0.3 | -4.0 | -13.6 | -0.2 | 14.9 | +6.2% |
| 2022 | 9.6 | -2.5 | 5.8 | 9.7 | 3.5 | -0.2 | -14.1 | -7.5 | -5.7 | 1.7 | 9.2 | 5.5 | +12.3% |
| 2021 | 5.2 | -9.3 | -1.9 | 17.8 | 3.0 | 8.2 | 5.5 | 20.8 | -1.3 | -1.8 | -27.6 | 6.1 | +16.6% |
| 2020 | -14.7 | 19.7 | -30.8 | -4.9 | 19.3 | 18.6 | -7.2 | -8.2 | 0.2 | -1.9 | 12.4 | 9.3 | -2.2% |
| 2019 | 11.4 | 1.2 | 9.7 | -16.9 | -29.0 | 4.6 | 2.8 | -9.4 | -7.0 | 0.1 | 7.6 | -3.0 | -30.9% |
| 2018 | 4.5 | -0.2 | 1.5 | -23.6 | 6.6 | -12.8 | 6.5 | 2.3 | -5.3 | -3.8 | -10.8 | -19.0 | -46.1% |
| 2017 | -2.6 | 4.4 | 3.5 | -0.4 | -0.8 | 0.4 | -6.1 | -6.7 | 0.1 | -4.1 | 7.2 | 4.7 | -1.5% |
| 2016 | -2.2 |