Bollinger Bands Calculator
Calculate Upper Band, Middle Band (SMA), and Lower Band from closing prices.
Frequently Asked Questions
What are Bollinger Bands?
Bollinger Bands consist of a middle band (SMA) and two outer bands set at a specified number of standard deviations away. They expand and contract with volatility.
How to trade with Bollinger Bands?
Price above the upper band may indicate overbought conditions. Price below the lower band may indicate oversold conditions. A squeeze (narrow bands) often precedes a big move.
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