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Technical Indicators
- Acceleration/Deceleration (AC)
- Awesome Oscillator
- Aroon
- Average True Range (ATR)
- Bollinger Bands
- Bollinger Bandwidth
- Bollinger %B
- Commodity Channel Index (CCI)
- DeMarker
- Average Directional Movement Index (DMI)
- Average Directional Movement Index Rating (ADXR)
- Donchian Channel
- Elliot Oscillator
- Alligator / Gator Oscillator
- Ichimoku Kinko Hyo
- Keltner Channel
- Moving Average
- Moving Average Convergence/Divergence (MACD)
- MACD Histogram
- Momentum
- Moving Averages of Oscilliators (OsMA)
- Parabolic SAR
- Pivot Points
- QStick
- Rainbow Chart
- Rainbow Oscillator
- Relative Momentum Index (RMI)
- Price Rate of Change (ROC)
- Relative Strength Index (RSI)
- Relative Vigor Index (RVI)
- Stochastics
- Trend Overlay
- Tom Demark's Range Projections
- Williams' Percent Range (%R)
- ZigZag
Bollinger Bandwidth straightforwardly measures the width of Bollinger Band. It can be served as a proxy of market volatility. When price volatility rises, the distance between the upper and lower bands will widen. Conversely, during a period of low market volatility, the distance between the two bands will contract. Although volatility doesn’t indicate the trend or direction, the bottom formation of Bollinger band width is often considered a leading sign of possible breakout in price. 
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