Edge Decay
Rolling edge decay: see when a trading strategy stops behaving like its evidence.
A strategy can look healthy in all-time stats while recent performance is deteriorating. ZenTrader highlights 30/60/90 day changes in win rate, average R, expectancy, and regime context.
30 day signal
Fast evidence that the current environment or execution behavior has changed.
60 day confirmation
A wider view that helps separate temporary noise from meaningful deterioration.
90 day context
A stability window for comparing the live process with the strategy thesis.
The point is earlier intervention.
Edge decay is not a panic button. It is a review signal: check whether the rules changed, the regime changed, the broker fills changed, or the strategy itself no longer has the same edge.