BOLL index, namely Brin index, also known as bollinger band index, was invented by Mr. John Brin in the 1970s. BOLL index is a very simple and practical technical analysis index and an important technical analysis tool to judge the long-term movement trend of the market. BOLL index consists of three lines, namely, the upper trajectory of BOLL index, the middle trajectory of BOLL index and the lower trajectory of BOLL index. BOLL indicator becomes an effective tool to judge the trend through the relationship between these three lines and other indicators. BOLL index also introduces the concept of price channel, and judges the future trend of the market through the width of market price channel and the fluctuation of stock price. The judgment of BOLL indicator trumpet is the only criterion of BOLL indicator.
BOLL index can be used as a separate trading system, which is unmatched by other technical indicators in stock selection and trading. The original intention of BOLL index design is to pursue relative perfection. Its goal is not to help users find the lowest buying point and the highest selling point, but to find an acceptable and relatively perfect transaction based on the position relationship between the stock price and the BOLL line with the BOLL indicator channel as the framework.
Although the BOLL indicator is simple, how to use it is very meaningful. Simple three lines can clearly show the current market state. BOLL indicator can indicate support level and pressure level, and show overbought and oversold, as well as trends and channels. It has many functions, is very effective and easy to use. BOLL index can be widely used in most financial time series, including but not limited to stock analysis, and also has a good guiding role in foreign exchange, options, commodity futures, stock index futures and other investment targets.