Bollinger Bands
Bollinger Bands are a technical analysis tool that traders use to identify potential trading opportunities. They are a type of volatility indicator that measures the distance between the current price of an asset and its moving average. Bollinger Bands consist of three lines: a middle line, an upper line, and a lower line.
The Middle Line
The middle line is a simple moving average (SMA) of the asset's price over a specified period of time. The most common period used is 20 days, but traders can use any period they want.