TonyTheBullSeverino
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Chartered Market Technician. Cycles, crowds, psychology. I don’t predict — I observe structure. Less noise. More signal.
According to research, breakout-style trend-following trading systems like the Bollinger Bands are among the most reliable. But few actually understand how to use the Bollinger Bands as a complete trading system.
The most valuable use of the Bollinger Bands is how the help to visualize volatility, or a lack thereof.
Low volatility: When the Bands tighten or narrow, it suggests a low volatility state. An analyst can strategize around this a variety of ways. In the red shadow box, we can see that the Bollinger Bands spend over a year at record tightness. During that time, there was a lack of a trend and primarily sideways movement. It is during this phase where the Bollinger Bands can be used as a mean reversion trading system, selling touches of the upper Bollinger Band and buying touches of the lower Bollinger band.
At one point during the red box, price closed outside the lower Bollinger Band, generating a breakdown sell signal. However, price i