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Lesson 64 of 100•Chapter 07
Quantitative Momentum• 6 mins Read•Level: Intermediate

4. Bollinger Bands & The Volatility Squeeze: Explosive Expansion Setups

Part of Chapter 07: Oscillators, Indicators & Quantitative Divergences

Core Learning Concepts
  • 20-period SMA with upper and lower bands set at 2 standard deviations
  • Volatility cycles: Low volatility always precedes explosive high volatility
  • The Bollinger Squeeze: Bandwidth contracting to multi-month historical lows

Created by John Bollinger, Bollinger Bands enclose price within an envelope defined by volatility: an upper band and lower band plotted 2 standard deviations away from a 20-period simple moving average.

Because standard deviation is a pure measure of volatility, the bands widen during volatile periods and contract during quiet consolidation ranges.

The Bollinger Squeeze is one of the most powerful setups in crypto: when the bandwidth contracts to its narrowest level in weeks or months, volatility has been compressed like a coiled spring. An explosive directional breakout is mathematically guaranteed to follow.

Quantitative Formula: Bollinger Bands Equation
LaTeX Specification
\text{Upper/Lower} = \text{SMA}_{20}(P) \pm (2 \times \sigma_{20})

Mathematical Explanation: Statistically, ~95.4% of all price action closes within the 2 standard deviation bands under normal distribution assumptions.

Institutional Execution Insight

Never guess the direction of a Bollinger Squeeze in advance. Wait for the first candle to close cleanly outside the bands accompanied by a surge in volume, then trade in the direction of the expansion.

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