Average True Range (ATR) - ATR was developed by J. Welles Wilder to measure a security's volatility. As such, the indicator does not provide an indication of price direction or duration, simply the degree of price movement or volatility. This indicator could be used to define the market stages when the security price is highly volatile from the periods when the price does not make sudden and fast movement. By having this knowledge a trader may adjust the personal trading indicators to react faster on market trend changes or to generate signals with some delay respectively.
On Balance Volume (OBV) - OBV indicator was created by Joe Granville to measure positive and negative volume flow. OBV is calculated by adding a period's volume when the close is up and by subtracting the period's volume when the close is down. A cumulative total of the volume additions and subtractions forms the OBV line.
Percentage Price Oscillator (PPO) - The Percentage Price Oscillator calculation are similar to the PVO (Percentage Volume Oscillator) with the difference that the formula is applied to the price moving averages instead of volume moving averages. The PPO formula subtracts the longer moving average from the shorter moving average and then divides the result by the longer moving average.
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