FFT Strategy Bi-Directional Stop/Profit/Trailing + VMA + Aroon

The FFT Strategy Bi-Directional Stop/Profit/Trailing + VMA + Aroon tool provides a comprehensive trading framework utilizing Fast Fourier Transform to isolate market cycles and filter high-frequency noise. It combines spectral analysis with trend-following filters and advanced exit management to provide a robust environment for strategy optimization.

Usage

The Usage section describes how the script can be used to identify entries and manage trades. The primary signal generation is based on the FFT Signal line crossing the zero threshold.

FFT Signal and VMA Filter

The main entry signal occurs when the FFT Signal crosses above or below the 0 line. To refine these entries, users can enable the Variable Moving Average (VMA) filter.

• Green: Upward momentum; typically used to permit buy entries.
• Blue: Sideways trading; can be used for either or both directions depending on preference.
• Red: Downward momentum; typically used to permit sell entries. When the VMA filter is active, the FFT signal changes color to reflect the trend. If disabled, the signal remains orange.

Specialized Stop Loss Mechanisms

Beyond standard percentages, this strategy offers two unique exit filters:

1. VMA Filter Stop Loss: Automatically exits a trade if the VMA detects a trend reversal based on user-defined rules.
2. Aroon Filter Stop Loss: Uses the Aroon indicator (Trend Change Detector) to close positions when extreme trend exhaustion is detected (e.g., when the upper line is below 1 or the lower line is above 99).

Exit Management

The strategy allows for bi-directional configuration of:

• Stop Loss & Trailing Stop: Protects capital by moving the exit point as price moves favorably.
• Take Profit & Trailing Take Profit: Locks in gains once a minimum profit threshold is reached, allowing the strategy to ride extended trends.

Details

The script is built upon the Fast Fourier Transform (FFT), a variation of the Discrete Fourier Transform. It decomposes time-series price data into periodic constituents (frequencies). By applying a band-pass filter (User-defined Lowest and Highest Allowed N), the script reconstructs time-domain data using only the most relevant frequencies, effectively removing market noise.

The integration of the Variable Moving Average (VMA) and Aroon indicators serves as a secondary confirmation layer. While the FFT identifies cyclical turning points, the VMA ensures the trade aligns with the broader momentum, and the Aroon identifies potential trend exhaustion to improve the strategy's Profit Factor and Drawdown profile.

Settings

Fourier Input

• Source: The price data used for FFT calculation (e.g., OHLC4).
• Length: The number of data points in the FFT window (powers of 2).
• Standardize Input Dataset: Normalizes the data by subtracting the mean and dividing by the standard deviation.

Filtered Fourier Components

• Lowest Allowed N: The lowest frequency component permitted to pass.
• Highest Allowed N: The highest frequency component permitted to pass.

VMA Filter

• Use VMA Filter: Enables trend-based entry filtering.
• VMA Length/Timeframe: Sets the period and resolution for trend detection.
• Allow Long/Short When: Defines which VMA colors (Green/Blue/Red) permit trade entries.

Stop Loss / Take Profit (Long & Short)

• Use Long/Short %: Sets the fixed percentage for stops and targets.
• Trailing %: Defines the distance for trailing stops.
• Activation Minimum Profit: The percentage of profit required before the Trailing Take Profit becomes active.

FAQ

How do I interpret the FFT Signal line?
The FFT Signal line represents the filtered price cycles. A cross above zero suggests a bullish cycle shift, while a cross below zero suggests a bearish cycle shift.

Why does my FFT signal turn orange?
The signal turns orange when the VMA Filter is disabled. When enabled, the signal color matches the VMA trend (Green, Blue, or Red).

How can I access this script?
You can get access on the LuxAlgo Library for charting platforms like TradingView, MetaTrader (MT4/MT5), and NinjaTrader for free.