In 1995 Tushar Chande, a principal of Tuscarora Capital Management and author of "The New Technical Trader" (1994) and "Beyond Technical Analysis" (2001), developed the Aroon indicator to determine trend direction and strength. The indicator's greatest value is in helping traders and investors to distinguish whether a long-term trend is ending or simply stalling before another move. This article will show you how to calculate and apply the Aroon indicator to your own trading.

Calculating Aroon
The Aroon indicator can be calculated using the following formula:

Bullish - [(# of periods) - (# of periods since highest high)] / (# of periods)] x 100
Bearish - [(# of periods) - (# of periods since lowest low)] / (# of periods)] x 100

If we take a look at these formulas, it is apparent that they are both looking at how recent the latest highs and lows were. Higher Aroon values indicate more recent highs and lows, while lower values indicate less recent highs and lows. Moreover, the Aroon values oscillate between 100 and 0 - a higher number indicates a stronger trend and vice versa.

The two Aroon indicators (bullish and bearish) can also be made into a single oscillator by making the bullish indicator 100 to 0 and the bearish indicator 0 to -100 and finding the difference between the two values. This oscillator then varies between 100 and -100, with 0 indicating no trend.

Using the Aroon Indicator
The Aroon indicator is used by plotting the bullish and bearish versions on the same sub-chart, or by plotting the oscillator on a single sub-chart.

The key to successfully using the Aroon indicators lies in watching two things:

  • Indicator Movements Around the Key Levels, 30 and 70 - Movements above 70 indicate a strong trend, while movements below 30 indicate low trend strength. Movements between 30 and 70 indicate indecision. For example, if the bullish indicator remains above 70 while the bearish indicator remains below 30, the trend is definitively bullish.
  • Crossovers Between the Bullish and Bearish Indicators - Crossovers indicate confirmations if they occur between 30 and 70. For example, if the bullish indicator crosses above the bearish indicator, it confirms a bullish trend.

Let's take a look at an example:

ATAroon_1r.gif
Figure 1

Here we have an example of Titanium Metals (TIE), a stock that recently trended strongly on increased demand for titanium. Notice that when the Aroon indicators were on opposite ends of the 30-70 barriers, the price was in a strong trend. Also note that when crossovers occurred within the 30-70 barriers, it often signaled a confirmation of the new trend.

The Aroon oscillator is a bit simpler, but provides less information. The key levels to watch are 50, 0 and -50. When the oscillator moves above 50, it indicates a strong bullish trend. When it hovers around 0, it indicates the lack of a definitive trend. And finally, when it breaks below -50, it indicates a strong bearish trend.

Let's take a look at the same chart using the oscillator:

ATAroon_2r.gif
Figure 2

Here we can see very similar information but with a lack of confirmations because there is no crossover possible with an oscillator.

It is important to realize when looking at these charts that the Aroon indicator is lagging and, therefore, is susceptible to sharp price drops or increases. Therefore, it is very important to use other methodologies in order to exit prudently. For example, watching for high volume reversal candles is a good way to get out at the right point in the event of a sharp price reversal. Stop-loss points set at key support levels are another good way to control risk.

Investors may prefer the oscillator because it is easier to read and tends to have less contradictory signals. Meanwhile, active traders may appreciate the additional information given by the two indicators. It is up to you to determine which methodology works best for your needs and apply it to your own trading. They both offer an excellent way to determine whether a trend exists, and how strong that trend is.

Conclusion
The Aroon indicator is used best by traders and investors interested in whether or not a trend is still intact. It can help traders avoid inefficient use of capital by allowing them to seek other opportunities during sideways markets and only hold positions during strong trends. However, it is important to watch carefully and analyze stocks using other studies in conjunction with Aroon to avoid the primary weakness in this system - sharp price movements.

Related Articles
  1. Trading Strategies

    How To Buy Penny Stocks (While Avoiding Scammers)

    Penny stocks are risky business. If want to trade in them, here's how to preserve your trading capital and even score the occasional winner.
  2. Chart Advisor

    Value Stocks Offer Stability in a Volatile Market

    With volatility on the rise, investors are turning to segments of strength such as value stocks. We'll take a look at several ETFs that could be worth a closer look.
  3. Chart Advisor

    Stocks to Short...When the Dust Settles

    Four short trades to consider, but not quite yet. Let the dust settle and wait for a pullback to resistance for a higher probability trade.
  4. Technical Indicators

    Using Moving Averages To Trade The Volatility Index (VIX)

    VIX moving averages smooth out the natural choppiness of the indicator, letting traders and market timers access reliable sentiment and volatility data.
  5. Chart Advisor

    Traders Step Back to Assess Commodities Damage

    Traders are turning to these exchange-traded notes and exchange-traded funds to analyze key commodities and determine what could be coming next.
  6. Chart Advisor

    Strategizing for a Market Fall...or Rally

    The downtrend isn't confirmed yet, so be prepared with trades for whether the stock market rallies or continues to fall. Here's how to do it.
  7. Trading Strategies

    Are You a Trend Trader or a Swing Trader?

    Swing traders and trend traders execute market timing strategies that require different skill sets.
  8. Technical Indicators

    Detrended Price Oscillator Trading Strategies

    The detrended price oscillator (DPO) offers a simple approach to cycle analysis, removing momentum and long-term trends from the equation.
  9. Investing

    Using Fibonacci to Analyze Gold

    Use Fibonacci studies to analyze gold by picking out hidden harmonic levels that can provide major support or resistance.
  10. Investing

    Predictions For The Stock Market

    Learn different choices and strategies that can be used to create a profit regardless of what direction the market is going.
RELATED TERMS
  1. Fintech

    Fintech is a portmanteau of financial technology that describes ...
  2. Indicator

    Indicators are statistics used to measure current conditions ...
  3. Intraday Momentum Index (IMI)

    A technical indicator that combines aspects of candlestick analysis ...
  4. Mass Index

    A form of technical analysis that looks at the range between ...
  5. Money Flow Index - MFI

    A momentum indicator that uses a stock’s price and volume to ...
  6. On-Balance Volume (OBV)

    A momentum indicator that uses volume flow to predict changes ...
RELATED FAQS
  1. What is the Aroon indicator formula and how is the indicator calculated?

    The Aroon indicator is actually comprised of two separate indicators: Aroon up and the Aroon down. Aroon up is calculated ... Read Full Answer >>
  2. What assumptions are made when conducting a t-test?

    The common assumptions made when doing a t-test include those regarding the scale of measurement, random sampling, normality ... Read Full Answer >>
  3. How are double exponential moving averages applied in technical analysis?

    Double exponential moving averages (DEMAS) are commonly used in technical analysis like any other moving average indicator ... Read Full Answer >>
  4. How do you know where on the oscillator you should make a purchase or sale?

    Common oscillator readings to consider making a buy or sale are below 20 or above 80, respectively. More aggressive investors ... Read Full Answer >>
  5. What are the alert zones in a Fibonacci retracement?

    The most commonly used Fibonacci retracement alert levels are at 38.2% and 61.8%. A 50% retracement level is also commonly ... Read Full Answer >>
  6. How was the Fibonacci retracement developed for use in finance?

    The use of Fibonacci retracements in stock trading was popularized by noted technical analysts W.D. Gann and R.N. Elliott. ... Read Full Answer >>

You May Also Like

Trading Center
×

You are using adblocking software

Want access to all of Investopedia? Add us to your “whitelist”
so you'll never miss a feature!