Using a Bandpass Filter to Identify Market Mode

Summary

This document describes a market mode indicator attributed to John Ehlers. It applies a bandpass filter and estimates reference levels from the average of detected peaks and valleys. The filter’s position relative to those levels is then used to determine the market mode. The text does not specify the filter settings, peak and valley detection rules, or the exact interpretation assigned to each mode.

Color changes in the indicator are suggested as potential signals. However, the document gives no chart examples, market data, backtest results, or rules for entering and exiting trades. It therefore offers only a high-level description of the indicator’s construction and possible use. Traders would need further detail and testing to assess how the mode classification behaves across instruments and timeframes, and whether color changes provide useful signals after costs and risk are considered.

Key ideas

• The method uses a bandpass filter to characterize market mode.
• Reference levels are based on an average of detected peaks and valleys.
• The filter’s position relative to those levels determines the mode, though the mapping is not specified.
• Color changes are suggested as possible signals.
• The document gives no parameter rules or performance evidence.

Tags

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