Vortex Indicator Developed by Etienne Botes and Douglas Siepman, the Vortex Indicator consists of two oscillators that capture positive and negative trend movement. In creating this indicator, Botes and Seipman drew on the work of Welles Wilder and Viktor Schauberger, who is considered the father of implosion technology. Despite a rather involved formula, the indicator is quite easy to interpret. A bullish signal triggers when the positive trend indicator crosses above the negative trend indicator or a key level. A bearish signal triggers when the negative trend indicator crosses above the positive trend indicator or a key level. The Vortex Indicator is either above or below these levels, which means it always has a clear bullish or bearish bias. Interpretation The Vortex Indicator (VTX) can be used to identify the start of a trend and subsequently affirm trend direction. First, a simple cross of the two oscillators can be used to signal the start of a trend. After this crossover, the trend is up when +VI is above -VI and down when -VI is greater than +VI. Second, a cross above or below a particular level can signal the start of a trend and these levels can be used to affirm trend direction. Conclusion The Vortex Indicator is a unique directional indicator that provides clear signals and defines the overall trend. As with all technical analysis tools and indicators, the Vortex Indicator can be used on a range of securities and across various timeframes. For example, VTX can be applied to weekly and monthly charts to define the bigger trend and then applied to daily charts to generate signals within that trend. Using the daily chart, chartists could focus exclusively on bullish signals when VTX on the weekly chart indicates an uptrend. Conversely, chartists can focus on bearish signals when VTX on the daily chart is in bear mode.