Two Pole Butterworth Filter for Automated Trading

The Two Pole Butterworth Filter is a smoothing indicator designed to reduce noise in price data. By smoothing short-term fluctuations, it can help traders define cleaner price/filter crossover rules and trend context.

For automated trading, the useful part is the measurable condition: whether price crosses above or below the filter line, whether price stays on one side of the filter, or whether the filter confirms another trend or momentum rule.

• Filter Line: The smoothed value used as a comparison level
• Noise Reduction: The filter smooths price data so rules do not react to every minor movement
• Shorter Lag: The source describes it as shorter-lag than the Three Pole Butterworth Filter
• Tradeoff: The Two Pole version is less smoothed than the Three Pole version
• Automation Use: Filter crosses and filter-side conditions should be explicit and measurable

Tradeworks indicator source: The Two Pole Butterworth Filter aims to smooth out prices. It has a shorter lag than the Three Pole Butterworth Filter, while the data is less smoothed.

Two Pole Butterworth Filter strategies should be converted into explicit comparisons against the filter value. Avoid vague turning-point descriptions unless the condition can be expressed as a measurable rule in the editor.

• Confirm the exact Two Pole Butterworth Filter output value in the editor
• Use EMA or SMA for trend filtering
• Use RSI for momentum confirmation
• Use ADX to filter weak-trend conditions
• Use ATR for volatility-aware exits
• Backtest raw filter-cross and trend-filter logic separately before combining filters