The Vortex Indicator is composed of 2 lines that show both positive (VI +) and negative (VI -) trend movement. Etienne Botes and Douglas Siepman are developed by this indicator. Vortex indicator consists of two oscillating lines. In these oscillators, one to identify positive trend movement and the other to identify negative price movement. In the Vortex indicator, Botes and Shipman drew on the work of Welles Wilder and Viktor Schauberger, who is considered the father of implosion technology. This indicator is quite straightforward to understand and easy to interpret. The Vortex indicator a bullish signal triggers when the positive trend indicator crosses above the negative trend indicator or a key level. As the opposite way, a bearish signal triggers when the negative trend indicator crosses above the positive trend indicator or a key level. This indicator is either above or below these levels, which means it always has a clear bullish or bearish bias.