Bollinger Band Breakouts with an ATR-Adjusted Trend Line

Summary

The Follow Line strategy uses Bollinger Band breakouts to update a directional trend line. A close above the upper band sets the line from the bar’s low, while a close below the lower band sets it from the high. With the ATR filter enabled, the line is offset by ATR; otherwise, it uses the bar’s extreme directly. The source also constrains the line so that it does not move against its recent direction during a breakout, and generates long or short entries when the line’s direction changes.

The listed defaults include a 21-period band, one standard deviation, and a 5-period ATR. The document recommends tuning these settings by instrument and adding filters or stop losses. It cautions that band settings can create false breakouts and a large ATR can delay reversals. A BTC/USDT futures backtest window of about one week is specified, but no performance statistics are shown. The stated effectiveness and profit potential are therefore unverified, and the short test window offers little evidence about behavior across market conditions.

Key ideas

• Band breakouts set a trend line from the bar’s low or high.
• An optional ATR offset adjusts the line to account for recent volatility.
• The trend line is constrained during breakout updates and its direction changes drive entries.
• The document warns that band and ATR settings can create false signals or delay reversals.
• The listed backtest configuration includes no reported performance results.

Tags

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