I want to share a tool for analysis that I frequently use: Bollinger Bands. If you don't know what BOLL is, it's a pretty useful technical indicator developed by John Bollinger in the 1980s.

Basically, the Bollinger Bands indicator consists of three lines drawn on a chart. The middle line is a simple moving average (SMA) calculated over 20 periods, representing the average price over a certain period. The other two lines—the upper and lower bands—are calculated by adding or subtracting twice the standard deviation from the middle line.

What’s the advantage of BOLL? It helps you measure market volatility. When the bands widen, it indicates increased volatility. Conversely, when they narrow, the market is in a calm phase. I’ve noticed that this narrowing often occurs before a significant price movement.

In terms of usage, traders often use it to find entry and exit points. When the price approaches the lower band, it’s a potential buy signal. When the price hits the upper band, it might be time to sell. However, if the price moves outside these bands, it could indicate a strong trend is underway.

One thing to note: what is Bollinger Bands without combining it with other indicators? I usually use it together with RSI (Relative Strength Index) to confirm trading signals. This approach helps improve accuracy compared to relying on a single indicator.

The calculation formula is quite simple: Middle band = SMA(20), Upper band = Middle band + (2 x standard deviation), Lower band = Middle band - (2 x standard deviation). You don’t need to calculate manually because trading platforms like Gate.io already have this indicator integrated.

Overall, understanding Bollinger Bands will help you read the market better. It’s not a perfect tool, but when used correctly and combined with other analyses, it can be a valuable assistant in your trading.