Indicators
Bollinger Bands are a volatility indicator built around a moving average. They create an upper band and a lower band that expand when volatility increases and contract when volatility falls.
Price moves inside a volatility envelope. The bands widen when the market becomes more active and tighten when the market becomes calm.
Bollinger Bands help traders understand whether price is moving in a calm way or in a more expanded, volatile way.
They also help show when price is traveling toward an outer band, staying close to the middle band, or compressing into a tighter range.
In simple words: Bollinger Bands show volatility and possible stretch, not a guaranteed reversal.
The top boundary of the volatility envelope.
Price pressing into it can show strength, expansion, or stretch.
Usually the moving average at the center.
Traders often treat it like a balance line or trend guide.
The bottom boundary of the volatility envelope.
Price pressing into it can show weakness, expansion, or stretch.
Usually mean volatility is elevated. Price is moving with more energy and larger swings.
Usually mean volatility is low. The market may be compressing, balancing, or preparing for a later expansion.
The bands start widening as the market becomes more active.
The bands become very tight, often showing compression.
In strong trends, price can stay near an outer band for a while.
After stretch, price sometimes pulls back toward the middle band.
One of the most famous ideas around Bollinger Bands is the squeeze.
A squeeze means the bands have become unusually tight. That can signal low volatility and possible upcoming expansion.
Important:
A squeeze suggests expansion may come later, but it does not tell you the direction by itself. You still need structure, breakout behavior, momentum, and confirmation.
Mistake: assuming touching the upper band means sell, or touching the lower band means buy
In strong trends, price can keep hugging an outer band for longer than beginners expect.
The bands show relative stretch and volatility. They do not act like automatic reversal buttons.
If trend is strong, outer-band pressure may show continuation rather than reversal.
If price is stretched into a band and RSI also shows exhaustion, the setup may become more interesting.
If an outer band aligns with a key level, that area may become more meaningful.
MarketBiasTracker does not depend on Bollinger Bands directly in the same way a classic Bollinger strategy might, but the underlying ideas are very relevant.
Tight or expanding conditions help frame whether the market is calm or active.
Price moving too far from its mean can support exhaustion or bounce thinking.
MBT treats stretch and volatility ideas as part of a wider reading that includes RSI, EMA structure, ATR, and market behavior.
Higher volatility or expanding movement.
Lower volatility or compression.
Can show strength, weakness, or stretch — not automatic reversal.
Combine with trend, RSI, levels, and confirmation.
Next we can build Fibonacci Retracement, Doji Candle, or Support and Resistance in the same style.
