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

1. The upper and lower bands pinch together — visibly tighter than recent history
2. Price trades in a narrow, sideways range around the middle band
3. 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:

1. Identify the squeeze on a daily chart (the bands at a 6-month low in width)
2. Mark the high and low of the squeeze range — these are your breakout levels
3. 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

1. Trading every tight band — only valid squeezes at 6-month bandwidth lows count
2. Entering on a wick — wait for a real close beyond the range
3. No volume confirmation — low-volume breakouts fail more often than not
4. 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.