Days Since Decline: Three Answers
The "days since the last decline" counter circulates without a definition. Against the all-time high it sits at zero for months in a bear market, against a 30-day window only a fast crash counts, against the last confirmed local high it lies in between. This chart shows all three side by side, with threshold and window as toggles and the number of episodes as the denominator. Every value uses only prices up to its own date. A counter, not a signal.
- Formula:
- Reset ⇔ close ≤ reference × (1 − threshold) · reference = running ATH | max of last N days | last confirmed local high (90-day max, confirmed after 14 days) · counter = days since last reset
- Data source:
- BTC daily closes (derived)
Strategies to backtest
Thematically related strategies from our library — try them in the backtest engine or read up on the methodology.
The benchmark for everything else — buy on day one, hold forever. The reference every strategy is measured against.
Open strategy →Buy a fixed amount on a fixed schedule — week after week, regardless of price. Smooths volatility, removes timing decisions.
Open strategy →More Bitcoin indicators
111-day SMA vs. 350-day SMA × 2. Classic top signal by Philip Swift — historical crossovers nailed every BTC bull-run top to within days.
Current BTC price divided by the 200-day moving average. Below 1 historically bearish, above 2.4 marks the top 0.5% quantile.
Logarithmic regression on BTC price since 2010 with nine colour bands — from "Fire Sale" deep blue to "Maximum Bubble" red.