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BOLL indicators

BOLL indicators are also called Bollingle Line indicators. The name of John Bollinger is named by a medium- and long -term technical analysis tool for judging the trend of the stock price movement.
The principles and calculation methods of the BOLL indicator BOLL indicator

BOLL indicators are a very simple and practical designed by US stock market analyst John Bollinger based on statistical standard deviations Technical analysis indicators. Generally speaking, the movement of the stock price always changes around a certain value center (such as moving average, cost line, etc.). The Bollinger indicator indicator is based on the above conditions that the "stock price channel" has been introduced on the basis of the above conditions. The concept, it believes that the width of the stock price channel changes with the size of the stock price fluctuation, and the stock price channel is mutated. It will automatically adjust with the change of the stock price. It is precisely because of its flexibility, intuition and trend that the BOLL indicator has gradually become a popular market indicator in the market widely used.

In many technical analysis indicators, the BOLL indicator is a special type of indicators. Most technical analysis indicators are constructed through quantitative methods. They do not rely on trend analysis and morphological analysis, while BOLL indicators have inseparable connections with the form and trend of the stock price. The concept of the "stock price channel" in the BOLL indicator is the intuitive form of the stock price trend theory. BOLL uses the "stock price channel" to show the various prices of the stock price. When the stock price fluctuates very small and is in a consolidation, the stock price channel will narrow. During the upper orbit of the stock price channel, it indicates that the extremely intense upward fluctuation of the stock price is about to start; when the stock price fluctuates beyond the lower rail of the narrow stock price channel, it also indicates that the extremely fierce downward fluctuations of the stock price will begin.

If investors often encounter two most common trading traps. One is to buy a low trap. After the so -called low -level buy, investors not only do not stop falling, but continue to fall; the other is to sell High trap, stock prices rose all the way after the stock sells. The Bling Line uses the theory of relativity of Einstein. It is believed that the various markets are interactive. Various changes in the market and the market are relative. There is no absoluteness. The stock price only reflects the relatively high or lower stock price above or below the lower rail line. Before investors make investment judgments, other technical indicators must be comprehensively referred to , Related data in the market.

In short, the stock price channel in the BOLL indicator plays an important reference role in predicting the future market trend. It is also an analysis method unique to the Bollinger indicator.
BOLL index calculation method

In the calculation method of the BOLL indicator is one of the most complicated ways. Calculation of rail (MB), upper orbit (up) and lower orbit (DN). In addition, as the calculation of other indicators, due to the different calculation cycle, the BOLL indicator also includes various types such as the day BOLL indicator, the week BOLL index, the month BOLL indicator BOLL indicator, and the minute BOLL indicator. It is often judged by the stock market to study the day Boll and the Zhou Boll index. Although the value of their calculation is different, the basic calculation method is the same. Taking the daily BOLL index calculation as an example, the calculation method is as follows:

1, the calculation formula of the day boll index
Mura line = n -day mobile average line = mid -track line Twice the standard deviation Lower Line = Middle Rail Line -Twice the standard deviation

2. The calculation process of the BOLL indicator of the day

) Calculating MA
ma = the sum of the closing price within N day ÷ n

2) Calculate the standard deviation md
Md = the sum of the two squares of (C -MA) of the square root N

3) Calculate MAUP = MB 2 × MDDN = MB -2 × MD
n n n
In the stock market analysis software, the BOLL indicator consists of four lines, namely the upper orbit UP, the middle rail MB, the lower rail line DN and the price line. Among them, the upper orbit UP is the connection of the UP value, which is represented by the yellow wire; the mid -rail MB is the connection of the MB value, which is represented by the white line; The line is represented by the United States line, and the color is light blue. Like other technical indicators, in actual combat, investors do not need to calculate the BOLL indicator, mainly to understand BOLL's calculation methods and processes in order to grasp the essence of the BOLL index more deeply and lay the foundation for the use of indicators.
The general research criteria of the BOLL indicator

The general research criteria of the BOLL indicator are mainly concentrated in the meaning of the upper, middle and lower rail lines in the
BOLL indicator

. 1. The movement range of the stock price channel formed by the upper, middle and lower rail lines in theBOLL indicator is uncertain, and the upper and lower limits of the channel change with the fluctuations of the stock price. Under normal circumstances, the stock price should always run in the stock price channel. If the stock price runs away from the stock price channel, it means that the market is in an extreme state.

2. In the BOLL indicator, the upper and lower rails of the stock price channel are the highest price and lowest price of the stock price. The upper orbit lines, mid -rail lines, and lower rail lines can support the operation of the stock price, and the upper orbit lines and mid -rail lines sometimes put pressure on the operation of the stock price.

3. Generally speaking, when the stock price runs above the mid -rail line of the Bollinger line, it indicates that the stock price is in a strong trend; when the stock price runs below the mid -rail line of the Bollinger line, it indicates that the stock price indicates the stock price In a weak trend.
The relationship between the upper, middle and lower rail lines in the BOLL indicator

1. When the upper, middle and lower rail lines of the Bollinger line run up at the same time, it indicates that the strong features of the stock price are characterized by the strong features of the stock price It is very obvious that the stock price will continue to rise in the short term, and investors should resolutely hold the shares or buy it at each other.

. When the upper, middle and lower rail lines of the Bollinger line running down at the same time, it indicates that the weak characteristics of the stock price are very obvious. Or buy it every high.

3. When the upper rails of the Bollinger line are running downward, while the middle and lower rail lines are still running upwards, indicating that the stock price is in the sorting situation. If the stock price is in a long -term upward trend, it indicates that the stock price is a strong finishing on the way to rise. Investors can hold stocks to wait and see or buy it at a short period of time; if the stock price is in a long -term decline Investors should be based on holding currency or minusing high -level positions.

4. The upper rails of the Bollinger line run upward, and the possibility of running down the middle and lower rail lines at the same time is very down. It will not be judged here.

5. When the upper, middle, and lower rail lines of the Bollinger line are in the horizontal direction at the same time, it depends on the situation of the current trend of the stock price and judge.
The relationship between the US line (or K -line, the same below) and the Bollinger line and the Bollinger line, the middle, and lower rails

. When the US line is below the mid -rail line of the Bollinger line, When breaking up the mid -rail line of the Bollinger upward, the strong characteristics of the stock price began to emerge, and the stock price would rise. Investors should buy stocks based on the medium and long lines.

. When the US line is above the mid -rail line of the Bollinger line and breaks up the Bollinger line upward, it indicates that the strong characteristics of the stock price have been established, the stock price may rise in a short term, investors may rise, investors will be treated, and investors will rise. It should be mainly based on holding up or short -term buying.

. When the US line breaks up the Bollinger line upward, its movement direction continues to rise, if the movement direction of the upper, middle and lower rail lines of the Bollinger line also upward at the same time, it indicates that it indicates The strong characteristics of the stock market are still up, and the stock price will rise in the short term. Investors should resolutely hold the shares to rise. It is not until the movement of the US line to start to look down on whether the market is turning.

. When the U.S. line moved up above the Bollinger line for a period of time, if the movement direction of the US line began to turn down, investors should be careful. Once the US line is turned around and downward, and the U.S. line is turned down and downward When breaking the Bollinger online rail, it indicates that the strong market in the short -term stock price may end, and the stock price will fall sharply in the short term. Investors should buy stocks in time and leave the market in a short term. Especially for those short -term stocks.

5. After the US line breaks through the upper orbit of the Bollinger line from the top of the Bollinger line and downward, if the movement direction of the upper, middle and lower tracks of the Bollinger line also begins at the same time. It indicates that the short -term strong market of the stock price is about to end, and the short -term trend of the stock price is not optimistic. Investors should mainly reduce the pound at high.

6. When the US line breaks the mid -rail from the middle of the Bollinger line and downward, it indicates that the strong market in the early stage of the stock price has ended, and the mid -term decline in the stock price has been formed. Investors sell shares in time at the mid -line. If the upper, middle and lower lines of the Bollinger line can be confirmed at the same time.

7. When the U.S. line falls down the lower track of the Bollinger line and continues, it indicates that the stock price is in extremely weak market. Investors should resolutely watch the currency and see the main aspect, try not to try not to see, try not to try not to see, try not to try not to watch. Buy stocks.

8. After the U.S. line runs under the Bollinger line for a period of time, if there is a signs of turning around in the movement of the US line, it indicates that the stock price will stop falling and stabilize in the short term. A small number of dips built a warehouse.

9. When the U.S. line breaks down from the Bollinger line from the Bollinger line and upward, it indicates that the short -term market of the stock price may be recovered. Investors can buy stocks in time in time and make short -term short -term as a short -term. Bounce market.

10. When the U.S. line has been on the middle rail line and moves up with the mid -rail line, it indicates that the stock price is in the process of strong rise, as long as the US line does not fall below the mid -rail line, investors will not fall, investors Resolutely hold the shares all the way.

11. When the U.S. line has been on the middle rail line and moves down with the mid -rail line, it shows that the stock price is in the process of weak decline, as long as the US line does not reverse upward and breaks through the middle rail line Stable investors can look at it all the way.
The special analysis method of the BOLL indicator The study judgment of the "speaker port" of Brin Line

The research judgment of the Boll index is unique to the BOLL indicator. The so -called Bollinger "speaker port" refers to the upper orbit line and lower rail lines of the Bollinger line in the process of operating the stock price. Special shape. Different from the direction of the operation direction and the position of the lower orbit line of the Bollinger line, we can also divide the "speaker mouth" into three types: open -mouth speaker mouth, closure speaker mouth, and tight mouth. Essence The shape of the open -type speaker mouth often appears in the early stages of the stock skyrocketing in the short term. The form of the closure speaker mouth often appears in the early stage of the stock plunge.

1 1. Open -type speaker mouth

When the stock price has been sorted over for a long time, the upper and lower rail lines of the Bollinger line gradually shrink, and the upper and lower rail lines The distance between the distance is getting smaller. As the transaction volume gradually enlarges, the stock price suddenly appears rapidly upward. At this time, the Bollinger line rail line also rises up rapidly at the same time, but the lower rail line accelerates downward movement. In this way The shape between the upper and lower rails of the Bollinger forms a special form similar to a large speaker. We call the stupped mouth of the Bollinger as the open -type speaker mouth.

The open -type speaker mouth is a form of a short -term breakthrough in the short -term of the stock price. It is a trend that is formed after the stock price has been built after a long low sideways. The direction of the upper and lower rail lines of the Bollinger line is completely opposite, but the intensity is great, indicating that the multi -header is gradually strong and the short power will gradually fail. The stock price will be in a short -term increase.

The formation of open -type speaker mouth form must have two conditions. One is that the stock price must be organized for a long period of low to medium and low. The longer the sorting time, the smaller the distance between the upper and lower rails, the greater the future rise; the second is that when the Bollinger line starts to open the opening, there must be. Obvious large trading volume appears.

The establishment of the opening of the speaker mouth is based on the U.S. line (or K line) upward through the upper orbit line and the stock price zone volume. For the emergence of the opening of the opening speaker mouth, if investors can buy it in a timely manner, they will make a profit.

2. The opening of the mouth of the mouth

. After the stock price increased sharply after a short period of time, the upper and lower rail lines of the Bollinger line gradually expanded, and the upper and lower rail lines The distance between the distance is getting larger and larger. As the transaction volume gradually decreases, the stock price has fallen rapidly at a high level. At this time, the upper track of the Bollinger line began to turn around rapidly, and the lower rail line is still accelerating the rise. In this way, the shape between the upper and lower rails of the Bollinger becomes a special form similar to a large horn. We call this speaker mouth of the Bollinger as the closed -type speaker mouth.

The cluster -type speaker mouth is a form of a short -term breakthrough in the short -term of the stock price. It is a trend that has emerged when the stock price has risen in a short period of time. The direction of the upper and lower rails of the Bollinger line is completely opposite, and the intensity is very strong, indicating that the short power is gradually strong and the bulls will begin to fail, and the stock price will be in a short -term sharp decline.

. Although the formation of the form of the mouth of the mouth, although there is no requirement for the transaction volume, it must also have a condition, that is, the stock price has increased in the early stage. The greater the distance between the distance, the greater the future decline.

The establishment of the form of the closed -end speaker mouth is based on the upper rail line of the stock price. For the emergence of the formal speaker mouth, if investors can sell them in time, they can keep their income and reduce a large decline in losses.

3. Tight -mouth horn

When the stock price fell for a long time, the upper and lower rails of the Bollinger line gradually moved closer to the middle rail, and the distance between the upper and lower rails was gradually moved. As you get smaller and smaller, the stock price has been repeatedly oscillated at a low level. At this time, the upper track of the Bollinger line is still moving downward, but the lower rail line is slowly rising. In this way, the shape of the Bollinger line up and down rails becomes a special form similar to a small horn. We call this horn of the Bollinger as a tight -tight speaker mouth.

The tight -mouth horn is a form that shows the stock price for a long time. It was formed after a long -term decline in the stock price. Facing a trend of long -term adjustment. The gradual movement of the upper and lower rails of the Bollinger line indicates that the strength of the two and short parties will gradually be balanced, and the stock price will be in the long -term sideways.

The formation conditions and confirmation standards for the formation of tight mouth horn mouth forms are relatively loose. As long as the stock price fell sharply after a long time, the transaction was extremely atrophied, and the distance between the upper and lower rails became smaller and smaller. You can determine the initial formation of the tight -mouth horn. When the tight -tight speaker mouth appears, investors can wait and wait, or build a small number of positions.
The sale logo in the middle rail

1. When the US line (or K line) breaks up the Bollinger mid -rail up, if the stock price also exceeds the mid -term moving average of the stock price, it means that the stock price is among the stock price The short -term upward rise trend has begun to form. This is the short -term buying sign revealed by the Bollinger index.

2. When the US line (or K line) breaks up the Bollinger mid -rail up, if the stock price rises up from the Bollinger's mid -rail, it means Success, this is a sign of buying or holding a shares in the Bollinger indicator.

3. When the US line (or K line) falls below the Bollinger mid -rail, if the stock price also falls below the short -term moving average, it means Trends began to form, which is a short -to -medium -term sales sign revealed by the Bollinger index.

. When the US line (or K line) breaks down the Bollinger mid -rail down, if the stock price is suppressed by the Bollinger mid -rail, it means Success, this is the currency holding sign of the Blin line indicator.
BOLL indicators and KDJ indicators are used

KDJ indicators are super -buying oversold indicators, and the Bollinger line is supported by supporting pressure indicators. The advantage of the combination of the two is that the signal of the KDJ indicator can be more accurate. At the same time, due to the Bollinger index in the K -line indicator system in the day, it often reflects the mid -term operation trend of the price. Therefore, these two are used. The indicator is used to determine whether the price is short -term fluctuations, or the medium -term fluctuation has a certain effect. It is especially suitable for determining whether the price is short -term (bottom) or entering the mid -term rise (fall). It has a good judgment effect.

The upper orbits in the Bollinger line have a pressure effect, and the middle and lower rails have support (pressure) effects. The signal issued by the indicator is taken. Of course, if the KDJ indicator has also reached the low position, it should be regarded as the result of the mutual verification of the short -term trend and the mid -term trend, and adopt a more active operating strategy. However, it should be noted that when the price fell to the Bollinger line, even if it was supported and stabilized, the KDJ indicator also rose simultaneously, and the signal of the trend turned has been sent, so at most, it can only rebound once. When the KDJ indicator is on the 80 highs, it is more secure to take the selling operation, because when the stock price falls below the Bollinger's mid -rail, it will cause narrowing the forest line. Targeting, so it is not advisable to continue to hold in terms of prevention of decline risk or the cost of considering the opportunity to hold.
BOLL indicators' actual combat skills

The actual skills of the BOLL indicator are mainly concentrated on the relationship between the upper, middle and lower rails between the stock price K line (or American line) and the Boll Aspects of the opening and closing of the line. Since the BOLL indicator on some software is on the main map, in order to more accurate research and judgment, we can use the BOLL indicator and the TRIX indicator to study and judge the market. The following uses the BOLL indicators on the analyst as an example to reveal its sale and watching function. (Note: On most software, the parameters of the BOLL indicator are generally not modified).

. Buying and selling signals

1. When the stock price K line bands breaks up the upper track of the Bollinger line up, and the TRIX indicator has also issued the bottom "golden fork" It shows that the stock price is about to enter a medium and long -term rising channel, which is the buy signal issued by the BOLL indicator. At this time, investors should buy stocks in a timely manner.

2. When the bottom of the Bollinger line is long for a long time, the bottom of the position is a long level of the level. When the passage suddenly speaks up, it means that the stock price is about to break away from the original horizontal operation channel and enter the new upward channel. This is also the buy signal issued by the BOLL indicator.

3. When the stock price K -line breaks down the mid -rail of the Bollinger line down, and the TRIX indicator has also issued a high "dead fork", it means that the stock price is about to enter a medium- and long -term decline channel. This is the selling signal issued by the Boll index. At this time, investors should leave the position as soon as possible.

. After the high -level narrow levels of the Bollinger line for a long period of time, once the stock price K -line breaks down the lower track of the Bollinger line down, at the same time When the opening is down, it means that the stock price is about to break away from the original horizontal operation channel and enter the new decline channel. This is also the selling signal issued by the BOLL indicator.

. The signal of holding shares and holdings

1. When the Bollinger line opens up, as long as the stock price K line is always running above the mid -rail of the Bollinger line, It shows that the stock price has always been in a medium and long -term rising orbit. This is the shareholding signal issued by the BOLL indicator. If the TRIX indicator also sends a shareholding signal, this signal is more accurate. At this time, investors should resolutely hold their shares.

. When the Bollinger line is open, as long as the stock price K line is always running below the mid -rail of the Bollinger line, it means that the stock price has been in a medium- and long -term decline. This This is the currency holding signal issued by the BOLL indicator. If the Trix indicator also sends a currency signal, this signal is more accurate. At this time, investors should resolutely wait and see.
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