Self –adjusting Volatility Envelope
It is based on the concept of Bollinger Bands. The difference is that volatility is used as the bands instead of standard deviation.
Volatility Bands are an indicator that allows users to compare volatility and relative price levels over a period time. The indicator consists of three bands designed to encompass the majority of a security's price action.
Volatility Bands are plotted at volatility levels above and below a moving average. A distinct characteristic of Volatility Bands is how the spacing between bands varies based on the volatility of prices.
Similar to Bollinger Bands, the bands are self-adjusting: widening during volatile markets and contracting during calmer or trending periods.
Volatility bands can help confirm trend, but they do not determine the future direction of a security. Similar to Bollinger bands, Volatility Bands serve two primary functions:
The following characteristics apply to Volatility Bands:
Short term: 10 day Simple Moving Average, with bands at 1.5 volatility
Medium term: 20 day Simple Moving Average, with bands at 2 volatility
Long term: 50 day Simple Moving Average, with bands at 2.5 volatility
Sharechart Default: 20 day Simple Moving Average, with bands at 2 volatility
Axa Asia Pacific Holdings Limited is used as an example below:
1. Prices go alongside the upper band during up trend.
2. Band expands during the reversal of up trend.
3. Prices go alongside the lower band during down trend.Band expands during the reversal of down trend.