Original diagrams for the ideas on this page. Illustrative, not real market data.
Bollinger bands: squeeze and expansion. The middle line is a 20-day average and the outer bands sit a set number of standard deviations away, so they measure how far price has recently been straying. When moves are small the bands pinch together; when moves grow they spread apart.The mood around a market cycle. The same price path labelled with the feelings that tend to travel with it, from optimism up to euphoria and down through panic to despondency. Confidence is highest where the most money is already committed and prices are highest.
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