Standard %B tells you where price is in the envelope. ATC BBP tells you whether the envelope itself is historically tight or wide — so you know if a squeeze is real, not just tighter than yesterday.
What It Is
The ATC Bollinger Band Percentile is a dual-layer oscillator that tells you two things simultaneously: where price sits inside its Bollinger envelope right now, and whether the current volatility environment is compressing, neutral, or expanding — measured against real historical data, not a hardcoded threshold.
Most Bollinger Band tools give you the bands. This one gives you the context behind the bands. A band can look visually compressed on your chart and still be wider than it's been 75% of the time — or vice versa. ATC BBP solves both problems: it smooths %B with a Hull Moving Average to reduce reactive noise, and scores the current bandwidth as a percentile against a rolling window of its own history.
ATC Upgrades
Raw %B reacts sharply to every candle. ATC BBP applies a Hull Moving Average to %B before plotting, cutting noise while preserving responsiveness.
Instead of asking 'are the bands narrow?', ATC BBP asks 'are the bands narrow relative to the last 125 bars?' A reading of 8% means the bands are tighter right now than 92% of recent history — a real squeeze signal.
Zone boundaries are not hardcoded round numbers. Every state transition uses a configurable hysteresis band so the indicator doesn't flicker at the edges. Once a state is entered, it takes a meaningful move to exit.
Validated Instruments & Timeframes
Instruments
Timeframes
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