Definition
#Measures the rarity of the current net taker imbalance in the active rolling window relative to its historical mean and standard deviation. Positive values indicate unusually strong buy-side imbalance, while negative values indicate unusually strong sell-side imbalance.
Formula & calculation
#(Live Mean Net Taker Imbalance - Historical Mean Net Taker Imbalance) / Historical StdDev Net Taker ImbalanceUnits & range
Z (standard deviations). Can be positive or negative.
Interpretation
#High positive values mean buy-side aggressive imbalance is unusually strong relative to history. High negative values mean sell-side aggressive imbalance is unusually strong relative to history.
Practical usage
#Useful for filtering windows where one-sided aggressive flow is not just strong, but statistically unusual for that market and timeframe.
Common mistakes
#Frequent interpretation traps and misuse patterns to avoid when applying this metric.
- Looking only at absolute z-score magnitude without checking the sign.
- Assuming unusual imbalance must lead to immediate continuation.
Timeframe note
#This metric applies to rolling windows such as 5m, 15m, and 60m. The underlying definition stays the same; what changes is the time horizon used to measure it. Shorter windows react faster, while longer windows smooth noise and emphasize broader structure.
5m
Faster response to fresh changes in activity and short-horizon structure.
15m
Balanced view between responsiveness and persistence.
60m
Broader context that is slower but more stable.