约翰·布林格发明了布林线(Bollinger Bands,保力加通道)。布林线已应用于众多的证券分析软件。

作为注册财务分析师(CFA)和注册市场技术师(CMT)，布林格多年在美国电视财经新闻网和CNBC担任市场分析评论员。他热衷于研究，开发出一系列的投资工具和分析技术。约翰·布林格的著作《布林线》于2001年由麦克劳－希尔公司出版。

Bollinger Bands are a type of statistical chart characterizing the prices and volatility over time of a financial instrument or commodity, using a formulaic method propounded by John Bollinger in the 1980s. Financial traders employ these charts as a methodical tool to inform trading decisions, control automated trading systems, or as a component of technical analysis. Bollinger Bands display a graphical band (the envelope maximum and minimum of moving averages, similar to Keltner or Donchian channels) and volatility (expressed by the width of the envelope) in one two-dimensional chart.