Bollinger Bands are a popular technical analysis tool that is used by traders to help identify potential trading opportunities. The bands are plotted two standard deviations away from a simple moving average of a security's price. The bands can be adjusted to user preferences, making them a flexible tool for traders.When the market is trending, Bollinger Bands can help traders identify potential trading opportunities. The bands can also be used to confirm price breakouts. When the market is range-bound, Bollinger Bands can help traders identify potential support and resistance levels.
Overall, Bollinger Bands are a versatile tool that can be used by traders to help them make better trading decisions. Bollinger Bands consist of a center line and two bands positioned above and below it. The center line is a simple moving average and the bands are calculated by adding and subtracting standard deviations from the center line. The number of standard deviations can be adjusted to suit the trader's preferences.When the market is trending, the bands will contract. This occurs because the standard deviation formula takes the average of the prices over the given period of time, and as the prices move further away from the average, the bands will widen. When the market is range-bound, the bands will expand. This occurs because the standard deviation formula takes the variation of the prices over the given period of time, and as the prices move closer to the average, the bands will narrow.Bollinger Bands can be used to identify potential trading opportunities. When the market is trending, traders can look for buy or sell signals when the price crosses the lower or upper band, respectively.