Bollinger Bands are a technical analysis tool invented by John Bollinger in the 1980s. Having evolved from the concept of trading bands, Bollinger Bands can be used to measure the highness or lowness of the price relative to previous trades.

The purpose of Bollinger Bands is to provide a relative definition of high and low. By definition, prices are high at the upper band and low at the lower band. This definition can aid in rigorous pattern recognition and is useful in comparing price action to the action of indicators to arrive at systematic trading decisions.

The use of Bollinger Bands varies wildly among traders. Some traders buy when price touches the lower Bollinger Band and exit when price touches the moving average in the center of the bands. Other traders buy when price breaks above the upper Bollinger Band or sell when price falls below the lower Bollinger Band. Moreover, the use of Bollinger Bands is not confined to stock traders; options traders, most notably implied volatility traders, often sell options when Bollinger Bands are historically far apart or buy options when the Bollinger Bands are historically close together, in both instances, expecting volatility to revert back towards the average historical volatility level for the stock.-technical analysis.

Get the word from the Master! ... the indicator discussion is heaven for tech junkies.

This book is a wonderful, easy-to-understand explanation of his famous baby.

John Bollinger is a giant in today's trading community. His Bollinger Bands sharpen the sensitivity of fixed indicators, allowing them to more precisely reflect a market's volatility. By more accurately indicating the existing market environment, they are seen by many as today's standard--and most reliable--tool for plotting expected price action.

Now, in Bollinger on Bollinger Bands, Bollinger himself explains how to use this extraordinary technique to compare price and indicator action and make sound, sensible, and profitable trading decisions.

Concise, straightforward, and filled with instructive charts and graphs, this remarkable book will be essential reading for all serious traders, regardless of market. Bollinger includes his simple system for implementation, and techniques for combining bands and indicators.

Over the past two decades, thousands of veteran traders have come to view Bollinger Bands as the most representative­­and reliable­­tool for assessing expected price action. Now, in the long-anticipated Bollinger on Bollinger Bands, John Bollinger himself explains how to use this extraordinary technique to effectively compare price and indicator movements.

Traders can look to this techniques-oriented book for hundreds of valuable insights, including:
* Analysis of the primary indicators derived from Bollinger Bands­­%b and BandWidth
* How traders can use Bollinger Bands to work with­­instead of against­­commonly encountered trading patterns
* Strategic use of Bollinger Bands in short-, mid-, and long-term trading programs
* Three trading systems based on Bollinger Bands

The essence of successful investing is to determine when a stock's price is too high or too low and then act accordingly. While John Bollinger would be the first to argue that no techniques exist for definitively determining these levels, Bollinger on Bollinger Bands presents an insider's examination of the one tool that­­if its widespread popularity is an accurate judge of its effectiveness­­comes closer than anything else. Concise yet comprehensive, it is one of today's truly indispensable investment guidebooks.

"The purpose of this book is to help you avoid many of the common traps investors get caught in, including the buy_low, sell-high trap, where the investor buys only to watch the stock continue downward or sells only to watch the stock continue upward. Here, the traditional, emotional approach to the markets is replaced with a relative framework within which prices can be evaluated in a rigorous manner leading to a series of rational investment decisions without reference to absolute truths. "

­­From the Introduction
In the 1970s, market newcomer John Bollinger couldn't find a system of investment analysis to fit his belief that all market events exist only in relation to one another and that there are no absolutes. So he created his own.

That approach­­Rational Analysis­­led to the establishment of Bollinger Bands and ensured Bollinger's spot in investment analysis history. Now, in Bollinger on Bollinger Bands, John Bollinger explains the market conditions that led to his initial discovery, and gives readers the inside story of the development and refinement of Bollinger Bands. He then goes on to present a relative decision framework built around Rational Analysis and Bollinger Bands­­an extraordinarily powerful combination of technical and fundamental analysis that answers the question of whether prices are too high or too low for virtually any security or market environment.

By understanding how to incorporate Bollinger's techniques into their own investment strategy, investors will greatly increase their ability to ignore often-costly emotions and arrive at rational decisions supported by both the facts and the underlying market environment. Bollinger on Bollinger Bands provides:
* The first authoritative examination of this revolutionary technical analysis tool
* Three simple systems for implementing Bollinger Bands
* Innovative methods for clarifying patterns­­and analyzing time frames and moving averages

The key to effective investment analysis is to­­as much as possible­­eliminate emotion and approach each trade on its technical and fundamental merits alone. Since their introduction, few analytical techniques have helped investors do this better or more consistently than Bollinger Bands. Bollinger on Bollinger Bands provides tips, guidelines, and rules for incorporating the bands into virtually any investment strategy. It is a watershed book, written by the only man truly qualified to claim a comprehensive knowledge of the topic­­John Bollinger himself.

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