Lesson 2 — Bollinger Bands

Bollinger Bands are volatility-based bands placed around price. They expand when volatility increases and contract when volatility decreases. This makes them useful for reading market conditions, especially when price is moving from compression into expansion or from expansion into exhaustion.

Many beginners misunderstand Bollinger Bands. They assume touching the upper band means price must fall, and touching the lower band means price must rise. This is not correct. In a strong trend, price can continue moving near the upper or lower band for a long time. A band touch is not a trade signal by itself.

This lesson teaches students how to read Bollinger Bands as a volatility and context tool. Band compression can show that the market is quiet and may be preparing for expansion. Band expansion can show that volatility is increasing. Price moving outside the bands may show overextension, but the trader must check trend context before assuming reversal.

A professional use of Bollinger Bands combines volatility behavior with price structure. In a range, band extremes may help identify reaction zones. In a trend, the bands may help measure continuation strength. During compression, they may help prepare for breakout scenarios.

The goal is not to trade the bands mechanically. The goal is to understand what the bands are saying about market energy.

1. Find one chart where Bollinger Bands contract before a large move.
2. Find one chart where price “walks the band” during a strong trend.
3. Find one ranging market where price reacts near band extremes.
4. Write whether the band touch created reversal, continuation, or no useful signal.