Vortex Indicator - VI

Definition of 'Vortex Indicator - VI'

An oscillator composed of two lines--an uptrend line (VI+) and a downtrend line (VI-). These lines are typically colored red and green respectively. Vortex indicator is used to spot trend reversals and confirm current trends. An uptrend or buy signal occurs when VI+ crosses above VI-. A downtrend or sell signal occurs when VI- crosses above VI+.

The calculation for the indicator is divided into three parts:

1. Uptrend and downtrend movement: 
  • VM+ = Current high minus prior low
  • VM- = Current low minus prior high
  • VMx+ = x-period Sum of VM+
  • VMx- = x-period Sum of VM-
Where "x" is the number of price bars or periods the indicator will look at (between 14 and 30 is common).
2. True Range (TR) is the greatest of:
  •   Current high minus current low
  •   Current high minus previous close (absolute value)
  •   Current low minus previous close (absolute value)
TRx = x-period Sum of TR
3. Normalize uptrend downtrend movement:
  • VIx+ = VMx+/TRx
  • VIx- = VMx-/TRx

Investopedia explains 'Vortex Indicator - VI'

Developed by Etienne Botes and Douglas Siepman, the traditional application of using VI- and VI+ crossovers can result in a number of false trade signals when price action is choppy. Increase the number of periods used in the indicator to reduce this, for example, using 25 periods instead of 14.

Another approach is to wait for the indicator to cross a key level following a VI-/VI+ crossover. When VI+ crosses above VI-, only take a long trade once VI- crosses below 0.9 and VI+ crosses above 1.10. When VI- crosses above VI+, only take a short trade (or exit longs) once VI+ crosses below 0.9 and VI- crosses above 1.10.

When VI+ is above VI- it confirms a price uptrend, and when VI- is above VI+ it confirms a price downtrend.

comments powered by Disqus
Hot Definitions
  1. Oil Reserves

    An estimate of the amount of crude oil located in a particular economic region. Oil reserves must have the potential of being extracted under current technological constraints. For example, if oil pools are located at unattainable depths, they would not be considered part of the nation's reserves.
  2. Joint Venture - JV

    A business arrangement in which two or more parties agree to pool their resources for the purpose of accomplishing a specific task. This task can be a new project or any other business activity. In a joint venture (JV), each of the participants is responsible for profits, losses and costs associated with it.
  3. Aggregate Risk

    The exposure of a bank, financial institution, or any type of major investor to foreign exchange contracts - both spot and forward - from a single counterparty or client. Aggregate risk in forex may also be defined as the total exposure of an entity to changes or fluctuations in currency rates.
  4. Organic Growth

    The growth rate that a company can achieve by increasing output and enhancing sales. This excludes any profits or growth acquired from takeovers, acquisitions or mergers. Takeovers, acquisitions and mergers do not bring about profits generated within the company, and are therefore not considered organic.
  5. Family Limited Partnership - FLP

    A type of partnership designed to centralize family business or investment accounts. FLPs pool together a family's assets into one single family-owned business partnership that family members own shares of. FLPs are frequently used as an estate tax minimization strategy, as shares in the FLP can be transferred between generations, at lower taxation rates than would be applied to the partnership's holdings.
  6. Yield Burning

    The illegal practice of underwriters marking up the prices on bonds for the purpose of reducing the yield on the bond. This practice, referred to as "burning the yield," is done after the bond is placed in escrow for an investor who is awaiting repayment.
Trading Center