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Bollinger Middle-Band Crossovers with a Fixed Take-Profit Rule

Article Strategy library · Author: ChaoZhang

Summary

This strategy uses a 20-period simple moving average as the Bollinger middle band, with upper and lower bands formed using two standard deviations. It treats a close crossing above the middle band as a long signal and describes a cross below as a short signal. The stated trade management uses the full account amount and aims to close positions after a 0.5% favorable move. The document frames the approach as a short-horizon strategy for volatile markets, especially where fees are absent.

No performance results are presented, and the source code does not clearly implement all of the prose: the entry logic is gated by an upward crossover, while the described downward-cross short entry is not evident. Its exit argument also warrants verification before use. The document itself highlights parameter sensitivity, fees, frequent trading, and the danger of using all capital, and suggests stop losses, volume filters, and adaptive targets as possible refinements.

Key ideas

  • The strategy defines Bollinger bands around a 20-period simple moving average using two standard deviations.
  • It describes middle-band crossovers as directional trade signals and uses a 0.5% take-profit threshold.
  • The source code appears not to implement the described short entry on a downward crossover.
  • The document provides no performance evidence, and fee assumptions and full-capital exposure are material limitations.
  • Potential refinements include stop losses, volume filters, and adaptive exit levels.

Tags

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