Arkham seasonality: every month and weekday
Going by median return since 2023, Arkham's best month has been May (+29.8%, higher in 2 of 3 years) and its worst December (−25.2%, higher in 1 of 3). Across all 39 full months, it finished higher 44% of the time.
A handful of years per month is a small sample. The “by luck” column says how easily a record like that would turn up if the month were no different from any other.
By month
| Month | Years | Higher | Median | Average | Best | Worst | By luck |
|---|---|---|---|---|---|---|---|
| January | 3 | 0 of 3 | −15.4% | −15.5% | −8% (2024) | −23% (2026) | 26% |
| February | 3 | 1 of 3 | −19.3% | +76.7% | +294% (2024) | −45% (2025) | 100% |
| March | 3 | 1 of 3 | −11.0% | −3.4% | +23% (2024) | −22% (2025) | 100% |
| April | 3 | 2 of 3 | +13.7% | +0.9% | +15% (2025) | −27% (2024) | 58% |
| May | 3 | 2 of 3 | +29.8% | +19.8% | +36% (2024) | −6% (2025) | 58% |
| June | 3 | 0 of 3 | −23.1% | −23.1% | −15% (2025) | −31% (2024) | 26% |
| July | 3 | 1 of 3 | −13.0% | −13.1% | +3% (2025) | −29% (2024) | 100% |
| August | 4 | 2 of 4 | −8.4% | −6.1% | +13% (2026) | −20% (2023) | 100% |
| September | 4 | 4 of 4 | +13.9% | +17.8% | +41% (2024) | +2% (2023) | 3.6% |
| October | 4 | 1 of 4 | −12.6% | −12.5% | +11% (2024) | −35% (2025) | 64% |
| November | 3 | 2 of 3 | +19.6% | +13.2% | +48% (2024) | −28% (2025) | 58% |
| December | 3 | 1 of 3 | −25.2% | −11.8% | +32% (2023) | −43% (2024) | 100% |
By weekday
| Day (UTC) | Days | Higher | Median daily move | Average |
|---|---|---|---|---|
| Monday | 173 | 48% | −0.18% | −0.34% |
| Tuesday | 173 | 46% | −0.85% | −0.66% |
| Wednesday | 174 | 49% | 0.00% | +1.04% |
| Thursday | 174 | 40% | −1.20% | −0.70% |
| Friday | 174 | 55% | +0.67% | +0.74% |
| Saturday | 174 | 45% | −0.30% | +0.31% |
| Sunday | 173 | 43% | −0.64% | −0.22% |
A month's return runs from the open of its first daily candle to the close of its last (UTC). Only full months are counted. Daily moves are close to close.