Bollinger Band Breakout Entries for Mean Reversion

Summary

This long-only mean-reversion method uses a 20-period Bollinger Band with a two-standard-deviation envelope. It enters when price crosses back above the lower band, seeking a rebound from an oversold excursion. The stated exit plan places a stop at the low of the entry bar and a profit target at the upper band. The document also describes the basic band construction: a simple moving average as the center and standard-deviation offsets above and below it.

The setup is illustrated with source code and a BTC-USDT futures backtest configuration spanning roughly one year, but no backtest results are provided. The text cautions that a move below the lower band can continue rather than reverse, so the entry may face persistent declines; it also flags the target's distance as a possible issue. It suggests tuning band parameters, adding signal filters, and revisiting the exit rules. Although the prose describes buying a break below the band, the code specifically triggers on a crossover back above the lower band, a meaningful difference in entry timing that should be resolved when evaluating the strategy.

Key ideas

• The strategy seeks a long mean-reversion trade after price moves below the lower Bollinger Band.
• The source code triggers on a crossover back above the lower band, unlike the prose description.
• The stop is placed at the entry bar low, while the target is the upper band.
• A continuing decline can invalidate the reversion premise and reach the stop.
• A futures test configuration is provided, but no performance results are reported.

Tags

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