[note 1] 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.

"[1] "John Bollinger, CMT, CFA, has always concentrated on the overlap between technical and fundamental analysis, rather than focus on the differences.

The service utilized a 52 rule fuzzy logic model to provide analytics of the US equities market and was one of earliest charting and technical analysis websites.

After becoming an independent trader in 1980 he joined the Financial News Network where he was the Chief Market Analyst for seven years, 1984–1990, a role in which he was responsible for the technical analysis content presented on air.

After FNN's acquisition by NBC, Bollinger helped with the transition to CNBC and continued to provide commentary on a regular basis.