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Data:2009-12-12 2:34
(1) Bollinger Bands Algorithm
Brin-line algorithm is very simple, that is derived over a period of time (the software with 20 days) the closing price of the standard deviation, and then moving average plus or minus the standard deviation of the location of each draw a line, that is, Bollinger Bands. Optimization Bollinger Bands Bollinger Bands are in the original two, based on the moving average standard deviation of plus or minus 1.7 times increase the number of two lines formed.
(B) the market implications of Bollinger Bands
Bollinger Bands market implication is that stock price fluctuations around the average deviation from the average price level. It reflects the severity of price shocks. For example, the Bollinger Bands at 13 yuan, 10 yuan, under Brin line, moving average, 11.5 yuan, meaning the stock price volatility around 11.5 yuan, with an average deviation from an average price of 1.5 yuan.
That the stock shocks with a standard deviation of the intensity of a period of time than the minimum difference between the maximum stock price, said price volatility, is better. For example, if in calculating the period of time, one day price fluctuations, but the other day, volatility is very small, then the period of market volatility intensity is clearly larger than what has always been by small-amplitude fluctuations, when Hou However, if measured by using the maximum amplitude of the fluctuations in the market can not reflect this difference. Measured by the standard deviation of stock price shock is no such drawbacks, because it took into account this period of time daily price Change.
Bollinger Bands are statistically significant, according to statistical theory, about 70% of the share price falls on the middle Bollinger Bands, 90% of share price falls 1.7 times the middle Bollinger Bands.
(C) the use of Bollinger Bands
Bollinger Bands is to reveal the short-term price target of shock intensity, its focus is through the analysis of stock price volatility forecasting market trends. Point of view from the shock, then the price of the basic trend of consolidation and breakthroughs, the share price movement is from a sub-consolidation and consolidation constitutes a breakthrough.
Consolidation process, the stock price within a certain range of shocks, this time as a suitable way to sell high buy low. Each time Change shocks are consuming chase investors sell into enthusiasm, the energy consumption of a shock, so the process of price correction is always a gradual attenuation of the amplitude. When the amplitude of small-to-high profit margins no longer thrown when the bargain-hunting, the game can not continue to play anymore, this time, someone began to seek a breakthrough consolidation range, looking for new space to continue playing the game, so changes brewing in plate This so-called "quiet very vivid."
Breakthrough in the process, the original consolidation interval stock price break to start a period of rapid Change. Unless the dealer a high degree of lock-chips, or whether up or down, this rapid movement will cause the player mentality unstable, resulting in a huge short-term shock energy, to continue to result in resistance to Change. At the same time, this shock also need to make full use of energy, so Change a space, is bound to re-enter the consolidation, the gradual consumption of the energy shock, stable and people's morale, and then to re-break the next time brewing. This so-called "dynamic polar static."
Therefore, from a consolidation point of view, we can say is every time a breakthrough in the search for new space consolidation; from a breakthrough point of view, each time a new round of consolidation is a breakthrough for the energy savings. Both reinforce each other, alternately, the stock market volatility will never go on this way.
From the consolidation with the breakthrough point of view, can be naturally derived Bollinger Bands variety of uses.
(1) to determine the state of the market, decided to make policy
When the upper and lower Bollinger Bands, when the distance starts to contract, indicating that stock price movements into the consolidation state, suitable for high-toss bargain-hunting. When Brin began to expand when the distance between lines, indicating that increased price volatility may be into the break state, the need for the flow. In another sign of consolidation with the breakthrough is that in the correction process, the stock is generally in the Boolean line between the two rail lines, while the breaking process, the price is usually walking in the Boolean line outside the two-rail lines. So, when the stock price from Bollinger Bands Bollinger Bands other than to wear the inside that breaking out and the end will enter a consolidation.
(2) the width between the upper and lower Bollinger Bands can be used as early warning signals of changing plate
Consolidation process, the Boolean distance between the lines became smaller and smaller, when the distance between Bollinger Bands as small as about 5% when the market turmoil that has been too small, short-term profits bubbling has no room for change to occur disc; if Brin bandwidth is still more than 10%, this indicates that there is a large space for short-term shocks occur less likely to break, you can continue to sell high buy low. Breakthrough in the process, when Brin width above 30%, indicating that short-term shocks have a larger space, and the prices at any time to stop and start a new round of consolidation.
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(3) The consolidation process of bargain-hunting as a high toss of the target bit
Consolidation process, the stock most of the time in the middle between the two Bollinger Bands, sometimes beyond the middle of the Bollinger Bands, but generally does not exceed 1.7 times of the Bollinger Bands. Therefore, when determining the high toss, after bargain-hunting strategies, Bollinger Bands can be the middle of two goals for the bargain-hunting at high bit, or slightly relaxed, but it definitely can not expect more than 1.7 times the Bollinger Bands.
(4) to capture a breakthrough moment
Quotes consolidation began to break through the ebb and flow a moment, stock prices often have to go beyond 1.7 times the Bollinger Bands. But also observe the breakthrough in the strength of an effective breakthrough should be a breakthrough in price very rapidly to reach 1.7 times the Bollinger Bands greater value, and can maintain two or three days, otherwise, if it is slowly breaking, and soon returned, would be invalid. Shares more than 1.7 times the Bollinger Bands do not stay long, the general will soon be back to 1.7 times the Boolean line. Because the stock to go outside the Bollinger Bands at 1.7 times the probability of no more than 5%, generally only in the moment can break through this situation will not be prolonged beyond the Bollinger Bands at 1.7 times the run. Bollinger Bands shares back to the way between the two types of callbacks, or stop to wait to catch up to Bollinger Bands, which corresponds to a breakthrough in finishing or re-test of support for pressure on the process of exploration.
(5) to determine the strength of a breakthrough Quotes
Breaking out, the price range of the moment to break through consolidation generally 1.7 times the Bollinger Bands break; break the trend after the operational phase, if the stock price walk Brin Brin lines and 1.7-fold between the lines, indicating a strong trend; if stock prices around the Bollinger Bands of the original run, indicating that the weaker trend.
(6) to determine the stability of a breakthrough Quotes
After the break the continuing operational phase, if the stock price again close to 1.7 times the Boolean line or hit the outside, which means Quotes walk too fast, there must be a callback or stop.
(7) as a supporting pressure line
Optimization of Bollinger Bands in the five lines have the support and pressure, particularly among the middle three more apparent. The middle one is the moving average line, the supporting pressure is obvious. There is also often observed at the two shares Brin online access to support or the face of pressure.
(D) Scope of application and weaknesses
Bollinger Bands on the banker is not a particularly high degree of Kongpan stocks applicable, because short-term price volatility is the market participation of the masses, especially the participation of short-term customer-caused short-term shocks of the laws of nature reflects the short-haul passenger and pattern of behavior, once the Makers highly Kongpan lost the people's participation, the stock will lose the short-term shocks of power, the above methods also do not apply.
Bollinger Bands disadvantage is the short-term fluctuations better grasp the direction of a breakthrough, but the instructions on the central line is unknown, requires a combination of other methods of analysis.
(5) Brin Bandwidth
Brin by Brin-line bandwidth is an indicator of evolved. Bollinger Bands in the discussion when we mentioned that Brin line distance between two lines under the recent share price reflects the average level of volatility, Bollinger Bands from the more intense the more wide-shocks from the more narrow the smaller shocks. The size of the average volatility, stock prices prompted the nature of the next step. If, shock by a big margin, there are more short-term shock profit opportunities, participants will naturally be a lot of short-term authors, and out frequently, resulting in price shocks to form a consolidation trend. Conversely, if the amplitude is extremely small, then no longer any short-term profit opportunities, if someone wants to continue playing on the only stock on the consolidation is bound to break. Bollinger Bands with the naked eye to determine the width between the two lines are not precise, resulting in a Boolean bandwidth indicator BBand. Brin Brin-line bandwidth is to the center line to the previous track or next track of the distance as an indicator of painted lines, which is more user-friendly.
Compass software Boolean bandwidth indicators were optimized. Other software Brin bandwidth is often the absolute width, while the compass software, is the amplitude given in percentages, such as Bband index is 20, said the recent stock average amplitude of 20%. While Bband Chart indicators also added two coordinate lines, one at the 5 position, indicators have reached below this line, said a recent amplitude has been too small, this situation is generally not more than 35 days will be a breakthrough, Of course, break up and down also need to use other indicators to judge. There is a 30-position coordinate lines, generally only continued to rise only when the root up a breakthrough in this line, this time the short-term accumulation of energy has been high, often quickly lead to a callback, the formation of shock order situation.
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