Description
The Bollinger Bands® Percentage B is a technical indicator based upon the Bollinger Bands® study; it plots a histogram showing position of price relative to the bands. It is calculated as percentage ratio of two differences: first one is the difference between the price and the lower band value, second one is the difference between values of upper and lower bands.
Input Parameters
| Parameter | Description | 
|---|---|
| average type | The type of moving average to be used in calculations: simple, exponential, weighted, Wilder's, or Hull. | 
| price | The price used in calculations of the bands. | 
| displace | The number of bars to shift the Bollinger Bands® study forward or backward. Positive numbers signify a backward displacement. | 
| length | The number of bars used to calculate the Bollinger Bands® study. | 
| num dev dn | The number of deviations to plot the lower band. | 
| num dev up | The number of deviations to plot the upper band. | 
Plots
| Plot | Description | 
|---|---|
| PercentB | The Bollinger Band® Percentage B histogram. | 
| ZeroLine | The zero level. Values below this line signify that price is less than the lower band value indicating oversold conditions. | 
| HalfLine | The 50% level. Values at this level signify that price is right in the middle of the bandwidth. | 
| UnitLine | The 100% level. Values above this line signify that price is higher than the upper band value indicating overbought conditions. | 
Bollinger Bands® is a registered trademark of John Bollinger.
Example*
*For illustrative purposes only. Not a recommendation of a specific security or investment strategy.
Past performance is no guarantee of future performance.