Bollinger Bands are like a river channel: the average water level (the middle band) is in the middle, with riverbanks (the upper and lower bands) on either side. Prices fluctuate normally within the channel; suddenly running beyond the banks is a “breakout.”

$AVA rose 17% today, and the Bollinger Bands opened up noticeably, like the river channel suddenly widening as volatility increased. The wider the bands open, the more intense the volatility—but watch out for “false breakouts,” like a river channel widening and then quickly returning to its previous width.

When the Bollinger Bands narrow, it’s like the river channel getting narrower. This indicates reduced volatility, and the market may be building up to move in a new direction.

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