VORTEX INDICATOR (VI)
The Vortex Indicator (VI) is composed of 2 lines that show both positive (VI +) and negative (VI -) trend movement.
It was inspired by certain motions found in water and was developed by Etienne Botes and Douglas Siepman.
The Vortex Indicator has a relatively straight forward application: it is used by traders to identify the start of a trend. The VI + line crossing the VI – line (or a key level) could be seen as a bullish signal.
The indicator is often used in combination with other signals.