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Bollinger on Bollinger Bands 2013: The 30th Anniversary Seminar
Bollinger on Bollinger Bands 2013: The 30th Anniversary Seminar
This two-DVD set was taped at a recent live seminar in Los Angeles and condenses the two-day seminar into 8 hours of presentations.

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A Practical Introduction to Bollinger Bands 2013
A Practical Introduction to Bollinger Bands 2013
Learn how to use Bollinger Bands from the man who developed them. John Bollinger teaches you the basics of Bollinger Bands so you can use them effectively.

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"Bollinger on Bollinger Bands" by John Bollinger, CFA, CMT
"Bollinger on Bollinger Bands" by John Bollinger, CFA, CMT
John Bollinger teaches everything you need about Bollinger Bands plus a rational approach to trading and the market.

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Bollinger on Bollinger Bands 2011
Bollinger on Bollinger Bands 2011
John Bollinger's current work on Bollinger Bands.

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Volume Indicators: a Video Presentation by John Bollinger
Volume Indicators: a Video Presentation by John Bollinger
Learn the most important volume indicators and how to use them.

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About Us
See Bollinger Bands in action: www.BollingerOnBollingerBands.com
Trading bands, which are lines plotted in and around the price structure to form an envelope, are the action of prices near the edges of the envelope that we are interested in.  They are one of the most powerful concepts available to the technically based investor, but they do not, as is commonly believed, give absolute buy and sell signals based on price touching the bands. What they do is answer the perennial question of whether prices are high or low on a relative basis. Armed with this information, an intelligent investor can make buy and sell decisions by using indicators to confirm price action.

But before we begin, we need a definition of what we are dealing with. Trading bands are lines plotted in and around the price structure to form an "envelope." It is the action of prices near the edges of the envelope that we are particularly interested in. The earliest reference to trading bands I have come across in technical literature is in The Profit Magic of Stock Transaction Timing; author J.M. Hurst's approach involved the drawing of smoothed envelopes around price to aid in cycle identification.



Figure 1 shows an example of this technique: Note in particular the use of different envelopes for cycles of differing lengths.

The next major development in the idea of trading bands came in the mid to late 1970s, as the concept of shifting a moving average up and down by a certain number of points or a fixed percentage to obtain an envelope around price gained popularity, an approach that is still employed by many. A good example appears in Figure 2, where an envelope has been constructed around the Dow Jones Industrial Average (DJIA). The average used is a 21-day simple moving average. The bands are shifted up and down by 4%.

FIGURE 2:



The procedure to create such a chart is straightforward. First, calculate and plot the desired average. Then calculate the upper band by multiplying the average by 1 plus the chosen percent (1 + 0.04 = 1.04). Next, calculate the lower band by multiplying the average by the difference between 1 and the chosen percent (1 - 0.04 = 0.96). Finally, plot the two bands. For the DJIA, the two most popular averages are the 20- and 21-day averages and the most popular percentages are in the 3.5 to 4.0 range.

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