Bollinger Bands are a popular technical analysis tool for measuring market volatility and identifying potential trading opportunities. The indicator consists of a middle moving average and two outer bands based on standard deviation. When volatility increases, the bands widen, while lower volatility causes them to contract.

One of the best ways to use Bollinger Bands is to monitor changes in BandWidth. A narrow band indicates a period of relatively low volatility, often called a Bollinger Band squeeze. Although a squeeze does not predict the direction of the next move, it can alert traders to the possibility of a significant price movement. Traders can then wait for a confirmed breakout before entering a position.

Bollinger Bands can also help identify potential continuation and reversal setups. When prices consistently move near the upper band, it may indicate strong bullish momentum rather than simply an overbought market. Similarly, prices staying near the lower band can reflect strong bearish momentum. Therefore, traders should consider the overall trend instead of automatically selling at the upper band or buying at the lower band.

For better results, Bollinger Bands should be combined with other tools such as volume, RSI, support and resistance, or momentum indicators. These additional signals can help confirm whether a breakout or reversal is likely to be meaningful.

Risk management is equally important. Traders should use appropriate stop-loss levels, position sizing, and predefined exit strategies rather than relying solely on band signals. Overall, Bollinger Bands are most effective when used as a volatility and market-context tool, helping traders recognise periods of contraction, expansion, momentum, and potential breakouts.