John A. Bollinger (/ˈbɒlɪndʒər/; born 1950) is an American author, financial analyst, contributor to the field of technical analysis and the developer of Bollinger Bands. His book Bollinger on Bollinger Bands (2001), has been translated into eleven languages. Since 1987, he has published the Capital Growth Letter, a newsletter which provides technical analysis of the financial markets. Bollinger Bands are intervals drawn on a price chart that define high and low on a relative basis, widely used in technical analysis to assess price volatility and potential trading opportunities. Bollinger started developing Bollinger Bands in the early 1980s while trading options, with much of his analytics focused on volatility. At the time, fixed-width trading bands were common, but Bollinger's contribution was to use volatility standard deviation to make trading bands adaptive. More information...
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