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technical_indicators:bollinger_bands [2019/06/24 19:39] 127.0.0.1 external edit |
technical_indicators:bollinger_bands [2020/09/28 16:49] betseyp |
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{{:technical_indicators:bollinger_bands:cs-bbands.xls?linkonly|Click here to download this spreadsheet example.}} | {{:technical_indicators:bollinger_bands:cs-bbands.xls?linkonly|Click here to download this spreadsheet example.}} | ||
- | **Bollinger Bands consist of a middle band with two outer bands.** The middle band is a [[:technical_indicators:moving_averages|simple moving average]] that is usually set at 20 periods. A simple moving average is used because the standard deviation formula also uses a simple moving average. The look-back period for the standard deviation is the same as for the simple moving average. The outer bands are usually set 2 standard deviations above and below the middle band. | + | **Bollinger Bands consist of a middle line with two outer bands.** The middle line is a [[:technical_indicators:moving_averages|simple moving average]] that is usually set at 20 periods. A simple moving average is used because the standard deviation formula also uses a simple moving average. The look-back period for the standard deviation is the same as for the simple moving average. The outer bands are usually set 2 standard deviations above and below the middle band. |
{{:technical_indicators:bollinger_bands:bbs-1-spyexam.png|Bollinger Bands - Chart 1}} | {{:technical_indicators:bollinger_bands:bbs-1-spyexam.png|Bollinger Bands - Chart 1}} | ||
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- | For more details on the syntax to use for Bollinger Band scans, please see our [[docs>scans:indicators#bollinger_bands|Scanning Indicator Reference]] in the Support Center. | + | For more details on the syntax to use for Bollinger Band scans, please see our [[https://support.stockcharts.com/doku.php?id=scans:indicators#bollinger_bands|Scanning Indicator Reference]] in the Support Center. |
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===== Additional Resources ===== | ===== Additional Resources ===== | ||
==== Stocks & Commodities Magazine Articles ==== | ==== Stocks & Commodities Magazine Articles ==== |