A Bandwidth Contraction and Breakout for Garmin
Bollinger Bands narrow as volatility falls and widen as volatility rises. The theory is that a volatility contraction is often followed by a volatility expansion. The directional clue depends on the break. Garmin (GRMN) has a classic contraction breakout working with a surge above the upper band on Friday. Notice that Bandwidth moved to its lowest level in over 8 months prior to this breakout.

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