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Bollinger Bands, Explained
Bands that breathe with volatility. Misread constantly — a touch is not a sell, and the squeeze is the real tell.
NoVo Options Trading · 2026
Bollinger Bands plot a moving average (usually 20-period) with an upper and lower band set a number of standard deviations away (usually 2). Because the bands are built from standard deviation, they widen when volatility rises and contract when it falls — they breathe with the market.
The band-touch trap
The classic mistake: treating a touch of the upper band as "overbought, sell" and the lower band as "oversold, buy." In a strong trend, price can ride the upper band for a long time while climbing — shorting every touch gets you run over, exactly like the RSI overbought trap. A band touch means price is statistically stretched, not that it's about to reverse.
The squeeze
The genuinely useful signal is the squeeze: when the bands contract to an unusually narrow width, volatility has compressed — and volatility is mean-reverting, so a compression tends to precede an expansion. The squeeze doesn't tell you direction; it tells you a bigger move is coming. The breakout, on volume, points the way.
Bollinger Bands measure how stretched price is — not whether it's about to snap back.
Using them right
Bands are context, not a trigger. They tell you whether price is calm or stretched and whether volatility is coiling — useful for calibrating expectations and stop distance. Pair them with trend and structure; in a range they help fade extremes, in a trend they help you stay with the move. One input, never a system.
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NoVo is a software tool for market analysis and for executing trades you initiate, not financial advice. This article is general education, not investment advice. Options trading involves substantial risk of loss, up to and including your entire capital. NoVo makes no guarantee of profit, win rate, or performance, and past results do not predict future outcomes. You are responsible for your own broker account, configuration, and trading decisions.