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技術分析

什麼是布林通道(Bollinger Band)

Bollinger Band ® Width

The Bollinger Band Width is the difference between the upper and the lower Bollinger Bands divided by the middle band. This technical indicator provides an easy way to visualize consolidation before price movements (low 什麼是布林通道(Bollinger Band) 什麼是布林通道(Bollinger Band) bandwidth values) or periods of higher volatility (high bandwidth values). The Bollinger Band Width uses the same two parameters as the Bollinger Bands: a simple moving- average period (for the middle band) and the number of standard deviations by which the upper and lower bands should be 什麼是布林通道(Bollinger Band) offset from the middle band.

Chart: Bollinger Band Width

How this indicator works

  • During a period of rising price volatility, the distance between 什麼是布林通道(Bollinger Band) 什麼是布林通道(Bollinger Band) the two bands will widen and Bollinger Band Width will increase. Conversely, during a period of low market volatility, 什麼是布林通道(Bollinger Band) the distance between the two bands will contract and Bollinger Band Width will decrease. There is a tendency for bands to alternate between expansion and contraction.
  • When the bands are relatively far apart, that is often a sign that the current trend may be ending. When the distance between the two bands is relatively narrow that is often a sign that a market or security may be about to initiate a pronounced move in either direction.

Calculation

Band Width = (Upper Bollinger Band - Lower Bollinger Band) / Middle Bollinger Band

Related Indicators

Bollinger Bands are envelopes plotted at a standard deviation level above and below a simple moving average of the price.

Technical analysis focuses 什麼是布林通道(Bollinger Band) on market action — specifically, volume and price. Technical analysis is only one approach to analyzing stocks. When considering 什麼是布林通道(Bollinger Band) which stocks to buy or sell, you should use the approach that you're most comfortable with. As with all your investments, you must make your own determination as to whether an investment in any particular security or securities 什麼是布林通道(Bollinger Band) is right for you based on your investment objectives, risk tolerance, and financial situation. Past performance is no guarantee of future results.

Bollinger Bands

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This website provides a comprehensive collection of John Bollinger's tools and Bollinger Bands indicators, including his newest work for the International markets.

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Trading idea

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Squeeze Breakout

Combining Bollinger Band Methods and Stops

Choosing Bollinger Band Methods for Different Market Conditions

Method III Signals in Sideways Markets

Services

The Bollinger Bands service provides charts, screening and analysis based on 什麼是布林通道(Bollinger Band) Bollinger Bands. The primary components of the service are 什麼是布林通道(Bollinger Band) daily lists of stocks that meet the criteria for four different trading methods (METHODS) developed created by John Bollinger which are calculated and updated nightly. The Bollinger Bands service 什麼是布林通道(Bollinger Band) covers the following markets:

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  1. Charts: Complete access to our fully customizable charts including the full Bollinger Band suite of indicators, plus more than 50 indicators, TrendLines, Systems and Stops.
      什麼是布林通道(Bollinger Band)
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Setting up a Bollinger Band with Python

Created in the early 80s and named after its developer (pictured above), Bollinger Bands represent a key technical trading tool for financial traders. Bollinger 什麼是布林通道(Bollinger Band) bands are plotted by two (2) standard deviations (a measure of volatility) away from the moving average of a price. Bollinger Bands allow traders to monitor and take advantage of shifts in…

Bollinger Bands

You can customize your charts with 什麼是布林通道(Bollinger Band) Bollinger Bands and over 50 indicators, TrendLines and systems/stops. If you are not sure what an indicator does, just click on the ? for a quick explanation.

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Subscribe 什麼是布林通道(Bollinger Band) now and start your free trial for full access to all the advanced chart features including more than 50 indicators, trading signals, powerful screening and daily lists of trading 什麼是布林通道(Bollinger Band) ideas!

Full Screen

Control the number of days shown in the chart by clicking on the + - or expand/contract the data by dragging the highlighted area.

To add additional indicators to the chart select from the Oscillator list.

In addition to the traditional chart types such as Western bars or Japanese candlesticks we offer Bollinger Bars, our exclusive marriage of western bars and candlesticks encoded in color:

  • The area between the opening price and the closing price is known as the body
  • When the close is higher than the open the body is green .
  • When the close is lower than the open the body 什麼是布林通道(Bollinger Band) is red .
  • The blue sections of the bar fill out the remainder of the range, from the top of the body to the high and the bottom of the body to the low

In addition, the signals for the Bollinger Bands Methods are indicated on the charts:

For 什麼是布林通道(Bollinger Band) 什麼是布林通道(Bollinger Band) PRO users only: Arrows plotted on the charts indicate a signal for John Bollinger's four Methods. The arrow 什麼是布林通道(Bollinger Band) is green or red, up/down, to depict the bullish or bearish trend.

The number near the arrow indicates the system number generating the signal, per the following legend: