First, the principle of Bollinger Band
This index was created by john bollinger. First, the standard deviation of the stock price was calculated, and then the confidence interval of the stock price was obtained. This indicator and Mike's indicator are both "path indicators", and the stock price fluctuates within the range of "upper limit" and "lower limit", but BOLL has only one "upper limit" and one "lower limit". In fact, an average line of the stock price must be drawn graphically.
The stock price hovers between the "upper limit" and "lower limit". The width of this band varies with the fluctuation of stock price. When the stock price fluctuates greatly, the band becomes wider, and when the fluctuation is narrow, the band becomes narrower. In other words, the bollinger band is variable and can automatically adjust its position as the stock changes. Because of its flexibility and adaptability, the bollinger Band has become one of the most commonly used technical indicators in the international financial market in recent years.
Second, the application formula of bollinger bands
Brin indicator is very important,
Operations must always refer to;
One indicator, ten functions,
No one else can compare.
Brin can find the direction,
The middle track is less than the sky;
K line floats on the middle rail,
Chanduo actively makes money.
If the K line is pressed by the middle rail,
Empty orders must take advantage of the grass;
If that head of the middle rail face downwards,
Stop joking.
Brin can be divided into high position and low position.
Upper pressure of lower support;
Descending to a lower orbital position,
The price point fluctuates easily.
Pay attention to the judgment level,
Unilateral ups and downs are not appropriate;
Shock market is the most practical.
Cooperate with unrestricted search for fighters,
Strong decline and rise.
Still need Brin's help.
K-line floats outside the upper rail,
At this time, the upward momentum is strong;
Strong rise, rapid admission,
How much do you have in mind?
K line falls below the lower rail line,
Strong decline, second touch;
Prices are falling rapidly,
Don't leave early empty-handed.
Ups and downs, quick profits,
Liquidation skills are also simple;
K line fell below the upper rail line,
This is a multi-single liquidation point;
The lower rail cannot press the K line,
The price goes down the track;
The characteristic of strong decline has disappeared,
Empty orders are quick, fair and easy to type.
Brin can also read disks,
The river channel becomes narrow from wide;
At present, the price fluctuates little,
The opportunity to make a profit is gone.
Waiting for a new direction,
It is not appropriate to guess the direction;
The price chooses a new direction,
Brin is bound to speak;
K line follows the upper rail,
Don't wait for more orders;
Lower rail collar k line descends,
Short the money and do it yourself.