Traders Library |
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 Schwager on Futures - Fundamental Analysis
In Fundamental Analysis, the legendary Jack D. Schwager has produced the most comprehensive, in-depth book ever written on the use of fundamental analysis for futures trading. In what is destined to become the bible of the futures industry, Schwager has poured out insights gathered during his long career as a trader, researcher, bestselling writer, and highly regarded authority in the field. Jack Schwager is one of the most important and visible figures in the futures industry today... read more
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Futures Glossary |
Futures Contract
A standardized, transferable legal agreement to make or take delivery of a specified amount of a certain commodity of a certain grade or type at a specific point in the future. The price is determined at the time the agreement is made. Futures contracts must be traded on organized futures exchanges.
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Technical Studies |
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Bollinger Bands (BOLL)
Technical Studies - 30 March 2006
Bollinger Bands are a kind of trading envelope. They are lines plotted at an interval around a moving average. Bollinger Bands consist of a moving average and two standard deviations charted as one line above and one line below the moving average. The line above is two standard deviations added to the moving average. The line below is two standard deviations subtracted from the moving average. Traders generally use them to determine overbought and oversold zones, to confirm divergences between prices and indicators, and to project price targets. The wider the bands are, the greater the volatility is. The narrower the bands are, the lesser the volatility is. The moving average is calculated on the close.
Parameters
Period - the number of bars, or period, used to calculate the study. John Bollinger, the creator of this study, states that those periods of less than ten days do not seem to work well for Bollinger Bands. He says that the optimal period for most applications is 20 or 21 days.
Standard Deviation - the percent of one standard deviation. John Bollinger suggests, if you reduce the number of days used to calculate the bands, you should also reduce the number of deviations and vise versa. For example, 200 percent of a standard deviation means two deviations above and two deviations below the moving average. If you use a period of 50, you may want to use 250 percent of a standard deviation. For a period of 10, you may want to use 150 or 100 percent.
Information provided by FutureSource |
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