Three lines that expand when volatility rises and contract when it falls. Learn the squeeze, the walk, and how to trade both bullish and bearish setups with precision.
Bollinger Bands place a simple moving average (the middle band) at the centre, with an upper and lower band drawn at a set number of standard deviations above and below it. The bands automatically widen when volatility is high and narrow when volatility is low.
Created by John Bollinger in the 1980s, the key insight is that roughly 95% of all price action occurs within the bands. When price moves outside them, it is statistically extreme — which means either a strong trend is underway, or a mean reversion is imminent.
In a strong uptrend, price “walks” along the upper Bollinger Band — candles repeatedly close near or touching the upper band. This is a sign of sustained bullish momentum, not a sell signal.
Many traders mistakenly short when price touches the upper band. In a band walk, that’s the wrong instinct. Price can hug the upper band for many candles during a powerful trend.
The mirror — price walks along the lower Bollinger Band in a strong downtrend. Each candle touches or closes near the lower band as sellers remain in complete control.
Trying to catch the bottom by buying lower band touches during a band walk is dangerous. The band walk can last far longer than expected. Respect the trend.
When the upper and lower bands contract and come close together, volatility has dropped to an unusually low level. This is the Bollinger Band Squeeze — and it almost always precedes a significant breakout.
The squeeze itself doesn’t tell you direction. It tells you that a big move is building. You need other tools — trend direction, MACD, volume — to determine which way the breakout will go. Then trade the breakout, not the squeeze.
Trading the squeeze: When the bands are tighter than they’ve been in 6 months, watch for the first candle to close decisively outside the bands. That candle often marks the beginning of a new trend leg. Enter on the close of that candle with a stop inside the bands.
Alternatives: Some traders use length 10 with 1.5 SD for faster signals on lower timeframes. For crypto, 20/2 is still the most widely used — don’t overthink it.
Price consistently closing above the 20 SMA middle band = bullish trend. Use it the same way you’d use the 21 EMA. Below it = bearish bias. It gives a cleaner signal on higher timeframes.
During a bear band walk on NQ, touching the lower band repeatedly means sellers are strong, not that a bounce is due. Look for a close back above the middle band before considering longs.
The weekly Bollinger Band squeeze on Bitcoin has historically preceded major moves of 30-100%+. When weekly bands tighten to multi-year lows, pay close attention to whichever direction breaks first.
Price touching the lower band while RSI is oversold = potential reversal zone. Two independent indicators agreeing on exhaustion. Combine with a rejection candle for the actual entry trigger.
During news-driven spikes on NQ, price can blast through a band before it has time to widen. The bands catch up, but the initial signal lags. In high-volatility conditions, reduce reliance on BB levels.
In ranging markets, price reaching the upper band often reverts to the middle. Combine with overbought RSI for a higher-probability mean reversion trade. This only works in confirmed ranges — not in trends.
The other half is what’s happening in your head when you’re in the trade. Fear, ego, revenge trading, breaking your own stops — that’s where most accounts actually lose money. Not bad setups.
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