Bollinger Band Entries Below the Lower Band and Above the Upper Band

Summary

This strategy uses Bollinger Bands, built from a moving-average basis and a standard-deviation envelope, to set price-triggered entries and exits. It enters long when the close falls below the lower band and short when the close rises above the upper band. It closes a long after the close moves above the upper band, and closes a short after the close moves below the lower band. The parameters allow the basis moving-average type, price source, band length, deviation multiplier, and offset to be changed.

The document presents the rules as a trend-following breakout method and explains that band width reflects changing volatility. However, entries outside the bands can also be read as fading extremes, so the stated trend-continuation rationale is not established by the rules alone. Published settings specify a BTC/USDT futures backtest over about a month, but no performance evidence is provided. The article warns that parameters may cause excessive trading, breakouts may fail, and the strategy has no stop-loss rule; it also suggests testing filters, timeframes, and instruments.

Key ideas

• Bollinger Bands use a moving-average basis and a standard-deviation envelope that changes with volatility.
• The rules enter long below the lower band and short above the upper band.
• Positions exit after price closes through the opposite band.
• The source allows several basis averages, input sources, lengths, multipliers, and offsets.
• The document provides backtest settings but no results, and notes the risks of false signals and missing stop-loss controls.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.