Bollinger Bands

This indicator is a locked Bollinger Band system designed around a long-term volatility envelope. It uses an EMA(100) as the central “basis” line and builds the upper and lower bands at 3.5 standard deviations from the basis, creating a wide channel that highlights extreme price expansion rather than frequent mean-reversion touches. In addition to the standard bands, the script plots two intermediate guide lines located at 33.33% of the distance from the basis toward the upper and lower bands. These 1/3-zone lines help visually segment the band into core, mid, and extreme areas, making it easier to judge how far price has stretched relative to the EMA and current volatility. Traders can use the basis as a trend reference, the 33.33% lines as “early extension” or pullback checkpoints, and the outer bands as high-stretch boundaries for risk management, scaling, and contextual decision-making on intraday charts.