Bollinger Band Squeeze: Trading the Volatility Breakout
A Bollinger Band squeeze is a low-volatility coil that often precedes explosive moves. Learn how to spot the squeeze and trade the breakout direction.
Bollinger Band Squeeze: Trading the Volatility Breakout
Low volatility breeds high volatility. The squeeze is the market taking a breath before the sprint.
A Bollinger Band squeeze happens when the upper and lower bands move close together — the tightest they've been in a while. It signals that volatility has collapsed, and historically, that collapse is followed by an expansion: a breakout.
What causes a squeeze
Volatility is cyclical. Markets alternate between expansion (big moves) and contraction (small ranges). The squeeze marks the contraction phase — price coils tighter and tighter as buyers and sellers reach equilibrium, until one side breaks and price surges.
How to spot it
- The upper and lower bands pinch together — visibly tighter than recent history
- Price trades in a narrow, sideways range around the middle band
- Bandwidth (the distance between the bands) falls to a multi-month low
John Bollinger's own rule: a squeeze is valid when bandwidth reaches its lowest level in at least six months.
The trading rules
Setup:
- Identify the squeeze on a daily chart (the bands at a 6-month low in width)
- Mark the high and low of the squeeze range — these are your breakout levels
- Wait for a candle to close beyond the range (don't act on a wick)
Entry:
- Long — close above the squeeze high
- Short — close below the squeeze low
Stop:
- Place it just inside the opposite side of the squeeze (or on the middle band)
Target:
- Measure the squeeze height and project it from the breakout point
- Or trail the position with a 20 EMA until momentum fades
Worked example
| Element | Value |
|---|---|
| Squeeze high | $50 |
| Squeeze low | $48 |
| Squeeze height | $2 |
| Long entry (close above) | $50.50 |
| Stop (below middle band) | $49 |
| Target (entry + height) | $52.50 |
| Risk | $1.50 |
| Reward | $2.00 |
Run the numbers through the risk-reward calculator and size the order with the position size calculator before you enter.
Direction bias
Squeezes don't tell you which way the market will break — only that it will. To bias the direction:
- Use the higher-timeframe trend (200 SMA) — favour breakouts in its direction
- Use volume — breakouts on rising volume are far more reliable
- Use the MACD — momentum in the breakout direction adds conviction
Common mistakes
- Trading every tight band — only valid squeezes at 6-month bandwidth lows count
- Entering on a wick — wait for a real close beyond the range
- No volume confirmation — low-volume breakouts fail more often than not
- Holding through the failed breakout — if price snaps back inside the range, get out
The "head fake"
The biggest risk in squeeze trading is the false breakout — price pokes beyond the range, sucks in traders, then reverses. Mitigate it by:
- Waiting for the daily close
- Requiring volume to expand on the breakout
- Stopping out the moment price closes back inside the range
Summary
The squeeze is a high-probability setup because volatility is mean-reverting — calm always gives way to storm. Identify a true 6-month low in bandwidth, wait for a volume-confirmed close, and trade in the direction of the higher-timeframe trend.