Seasonality
INSP seasonality — Inspire Medical Systems, Inc.
Over the last 9 years, INSP's strongest month on average has been November (+20.4%) and its weakest May (-9.1%).
Average return by month
Month-by-month statistics
| Month | Avg | Median | Up % | Best | Worst | Yrs |
|---|---|---|---|---|---|---|
| Jan | +2.72% | +2.23% | 75% | +26.9% | -17.8% | 8 |
| Feb | +3.11% | +6.50% | 62% | +15.6% | -15.1% | 8 |
| Mar | -8.54% | -10.52% | 25% | +20.0% | -29.8% | 8 |
| Apr | +4.95% | +10.68% | 62% | +18.9% | -19.8% | 8 |
| May | -9.13% | -13.40% | 38% | +13.8% | -34.3% | 8 |
| Jun | +3.64% | +6.72% | 67% | +18.9% | -15.7% | 9 |
| Jul | +7.01% | +11.51% | 67% | +25.6% | -11.3% | 9 |
| Aug | +7.38% | +20.22% | 67% | +27.5% | -24.8% | 9 |
| Sep | -4.08% | -7.37% | 44% | +17.4% | -23.5% | 9 |
| Oct | -2.74% | -2.86% | 22% | +15.8% | -25.8% | 9 |
| Nov | +20.43% | +15.49% | 62% | +72.6% | -17.2% | 8 |
| Dec | +1.93% | +2.15% | 62% | +40.0% | -25.9% | 8 |
Monthly returns heat map — INSP
price return, %| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -17.8 | -14.9 | -20.0 | 8.8 | -26.3 | 7.9 | 12.6 | 25.4 | 10.1 | -1.8 | -6.0 | -30.6% | |
| 2025 | 4.4 | -4.1 | -14.2 | -0.6 | -12.7 | -6.1 | -4.0 | -24.8 | -20.8 | -2.9 | 72.6 | -25.9 | -50.2% |
| 2024 | 3.7 | -15.1 | 20.0 | 12.5 | -34.3 | -15.7 | 5.4 | 27.5 | 17.4 | -7.6 | -1.2 | -3.8 | -8.9% |
| 2023 | 0.5 | 2.7 | -9.9 | 14.3 | 9.3 | 11.0 | -11.3 | -21.2 | -12.5 | -25.8 | -1.3 | 40.0 | -19.2% |
| 2022 | -3.8 | 10.3 | 5.2 | -19.8 | -14.1 | 3.3 | 14.4 | -8.4 | -7.4 | 9.9 | 23.9 | 4.3 | +9.5% |
| 2021 | 7.1 | 15.5 | -11.1 | 14.4 | -17.9 | -0.5 | -5.2 | 22.1 | 4.2 | 15.8 | -17.2 | 3.0 | +22.3% |
| 2020 | 0.8 | 14.8 | -29.8 | 18.9 | 13.8 | 6.7 | 14.2 | 20.2 | 8.0 | -7.5 | 55.5 | 1.3 | +153.5% |
| 2019 | 26.9 | 15.6 | -8.4 | -9.0 | 9.2 | 7.4 | 11.5 | 2.8 | -12.2 | -0.1 | 16.4 | 4.6 | +75.6% |
| 2018 | 18.9 | 25.6 | 22.8 | -23.5 | -4.8 | 14.6 | -8.0 |