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Bollinger Bands

Know Thoroughly About Bollinger Bands

Bollinger bands are nothing but the technical trading tool designed by John Bollinger in early 1980’s. It was applied in the financial related markets like Forex, futures, equities and commodities. On the other hand, it can be used from small term period to daily basis to hourly basis to monthly basis.

Bollinger bands are also defined as the most popular tool for technical analysis with three different lines drawn with one above the other and the center one being the security cost line. During the initial stages it was called as John Bollinger, but during the later stage John Bollinger evolved the concept and named it as Bollinger Bands.

Bollinger bands showcase different levels of highs and lows along with the security cost that has reached within a particular duration and along with its relative strength wherein the highs are quite close to the upper line and the lows are near to the lower line. In other words, it can be noted that cost points near to the edges can help in recognizing the pattern along with particular movement.

The bandwidth gets widened and its narrows depends upon its volatility. In case, if it’s high, then the band gets widened. If it is high, then the Bollinger bands would widen. On the other side, if volatility decreases then the bandwidth would narrow. These bands are usually oversold as well as overbought conditions within the given span of time.

These bands are somewhat like the moving average envelopes, but while making drawing calculations it’s quite different for both. Here, standard deviation levels are considered to make use of both lower as well as upper lines. Moreover, the lines are plotted by considering a fixed percentage.

Following variables are required to calculate Bollinger Bands-

  • Time period denotation- “ N”
  • Standard deviation value _”S”
  • Three lines in Bollinger bands are –
  • Moving average line (or) the middle line is used for calculation.
  • Upper band – It is shifted above the price standard deviation
  • Lower band – It is shifted below the price standard deviation

When it comes to security purpose, different types of variables can be chosen. Some of the typical traders make use of 20 Period simple moving average along with standard deviation 2. On the other side, some of the traders make use of exponential moving average as well.

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