The Aroon Oscillator: Unlocking the Secrets of Market Trends

The Aroon Oscillator

A Comprehensive Guide to Trading with Aroon Oscillator

May 11, 2023

Are you looking for a powerful technical indicator that can help you identify trend changes in the market? Look no further than the Aroon oscillator. Everything you need to know about the Aroon oscillator, from its definition and computation to its applications in trading, will be covered in this article. Let’s get going!



The oscillator is an analytical indicator used to determine the direction and strength of a trend in the stock market. It was developed by Tushar Chande in 1995 and is based on the Aroon indicator. The Aroon oscillator is a versatile tool that can provide valuable insights into the current market environment for traders.

The oscillator consists of two lines, Aroon up and Aroon down, which measure how long it has been since the highest high/lowest low has occurred over a specified lookback period. Typically a 25-period setting is used. By subtracting Aroon down from Aroon up, the resulting oscillator fluctuates between -100 and +100. Readings above zero indicate an uptrend, while readings below zero signal a downtrend.

The strength of the trend can be gauged by how close the oscillator is to the extremes of -100 or +100. An oscillator near -100 signals a strong downtrend, while a reading near +100 indicates a solid uptrend. Readings closer to zero represent consolidation or a lack of trend. Crossovers of the zero line can act as trade signals for trend changes.

One of the key benefits of the Aroon oscillator is its ability to detect emerging trends early before other indicators. The oscillator is especially useful for identifying potential trend reversals and the start of new trends. It can confirm the strength and validity of trends for better timing of entries and exits. The Aroon oscillator is a flexible indicator that can be integrated into short-term trading strategies as well as long-term investing approaches.

What is the Aroon Oscillator?

 This oscillator is a momentum indicator that helps traders identify trend changes in the market. It is a technical analysis tool that uses the Aroon indicator, which measures the time elapsed between the lowest low and highest high over a specific period. The Aroon oscillator is calculated by subtracting the Aroon down from the Aroon up. 


How is the Aroon Oscillator Calculated?

The Aroon oscillator consists of two lines, Aroon Up and Aroon Down, that are derived from the Aroon indicator before being combined into the oscillator. The calculations are as follows:

First, the Aroon Up line measures the number of periods since the highest high price over a specified lookback period occurred. Typically, a 25-period setting is used, but traders can adjust this parameter.

The Aroon Down line calculates the number of periods since the lowest low price happened over the same lookback period.

These two components range from 0 to 100. Aroon Up will approach 100 when a new high is set within the lookback period, while Aroon Down moves closer to 100 after a new low is established.

To obtain the oscillator, the Aroon Down is simply subtracted from the Aroon Up. This results in the final oscillator fluctuating between -100 and +100. Positive values indicate uptrend strength, while negative values reflect downtrend strength.

As new highs or lows form, the oscillator will swing closer to the -100 or +100 extremes reflecting the developing trend’s strength. Readings near zero indicate consolidation and lack of trend. Crossovers of the zero line can signal trend reversals.

The standard 25-period lookback is common, but traders can experiment to find the optimal setting for their timeframe. Overall, the Aroon oscillator provides a straightforward method to gauge trend direction and strength.


How to Use the Aroon Oscillator?

The oscillator is a versatile indicator that traders and investors can use in various ways. One of the most common applications is using Aroon oscillator crossovers to identify potential trend changes. When the oscillator crosses above zero, it signals a new uptrend, while a crossover below zero indicates a fresh downtrend. These crossovers can act as trade triggers for entering or exiting positions.

The strength of the emerging trend can be evaluated based on how far the oscillator is from the -100/+100 thresholds after the crossover. The farther from the midpoint of zero, the stronger the new trend. Traders may look for pullbacks to the zero line after crossovers to enter with momentum in the direction of the new trend.

Monitoring the oscillator for swings back to the zero line during strong trends provides information on possible trend weakness or exhaustion. Divergences between price and the oscillator can also act as warnings for potential trend changes. Some traders use overbought/oversold levels like -75/+75 to anticipate mean reversion.

The Aroon oscillator is most effective when combined with other indicators like moving averages to confirm signals. Traders may also look for the oscillator to reach extremes and then revert back to zero to trade counter-trend. Multiple time frame analysis using the oscillator on short and longer-term charts can provide additional confirmation for trade signals.


Aroon Oscillator Trading Strategies

 Trend Following Strategy:

The Aroon oscillator can form the core of a powerful trend following system. When the oscillator crosses above zero, signaling an uptrend, traders can look to buy pullbacks to the zero line with a stop below the recent swing low. As the uptrend progresses, the stop can be trailed higher beneath each subsequent higher low.

Exits can be based on the oscillator crossing back below zero or dropping below an oversold level like -75, indicating trend exhaustion. In strong trends, secondary buy signals may appear when the oscillator pulls back to the zero line during the broader uptrend. These temporary retracements allow for potential add-on entries.

In downtrends signaled when the oscillator moves below zero, traders can look to enter short positions on rallies back up to the zero line with a stop above the recent higher high. As the downtrend extends, stops can be trailed lower above swing highs. Profit targets can be set based on overbought readings near +75 or when the oscillator crosses back above zero, suggesting the downtrend may be over.

Using the Aroon oscillator for trend following allows traders to capitalize on extended moves in the prevailing market direction. Combining additional indicators like moving averages and price action with the oscillator can improve signal accuracy and timing. The key is consistently following the oscillator signals for trend direction.

Reversal Strategy:

The Aroon oscillator is well-suited for spotting trend reversals early. When the oscillator has been pegged near +100 indicating a strong uptrend, traders should watch for the oscillator to cross back below +75 or +50 signaling uptrend weakness. This divergence can foreshadow an impending reversal, prompting traders to take profits or enter short positions.

As the oscillator continues dropping towards and eventually below zero, it confirms the emerging downtrend. Traders can look to enter shorts on rallies back up to the zero line following the bearish crossover. Stops are placed above the recent swing high to limit risk. Profit targets are based on oversold readings near -75 on the oscillator or a move back above zero indicating trend exhaustion.

For downtrend reversals, the oscillator can be monitored for bullish divergences while near the -100 oversold zone. As the oscillator starts rising towards and crosses above zero, traders can buy pullbacks with stops below recent lows, anticipating an emerging uptrend. Additional long entries can occur on dips back to the zero line following the bullish crossover. Take profits are based on overbought levels or a move back below zero signaling the uptrend may be ending.

Combining Aroon oscillator signals with other reversal indicators can improve timing and confirmation for trend reversal trades. The oscillator is an excellent early warning tool for spotting shifts in market momentum.

Overbought/Oversold Strategy:

The Aroon oscillator can also assist traders in identifying overbought and oversold market conditions. When the oscillator crosses above 50, it suggests that the trend is gaining strength and potentially becoming overbought. On the other hand, when the oscillator crosses below 50, it indicates that the trend is weakening and the market may be oversold. Traders can utilize these overbought and oversold signals to make trading decisions.

For instance, when the oscillator is below 50 (oversold condition), traders may consider entering long positions, expecting a potential bounce or reversal in price. Conversely, when the oscillator is above 50 (overbought condition), traders may consider entering short positions, anticipating a potential pullback or reversal. This strategy can be complemented by incorporating other technical indicators, such as the Relative Strength Index (RSI) to validate signals and increase the probability of successful trades.

It is important to note that while these trading strategies can be effective in certain market conditions, they are not foolproof and should be used in conjunction with comprehensive market analysis, risk management techniques, and consideration of other relevant factors. Traders should also practice and backtest these strategies to evaluate their effectiveness and suitability for their specific trading style and objectives.


Divergence Strategy

The divergence strategy is a technique traders can employ using the Aroon oscillator to identify divergences between the oscillator and price movements. By observing these divergences, traders can potentially gain insights into upcoming shifts in the market.

In the context of the Aroon oscillator, a divergence occurs when there is a disparity between the price action and the oscillator’s readings. Specifically, if the price is reaching new highs, but the oscillator fails to follow suit by not reaching new highs, it could indicate a bearish divergence. This discrepancy suggests that the upward momentum may weaken, potentially signalling a bearish trend reversal or a corrective pullback.

Conversely, a bullish divergence occurs when the price creates new lows, but the oscillator does not confirm these lows by failing to reach new lows. This bullish divergence implies that despite the downward movement in price, the underlying bullish momentum might be building up. Traders could interpret this as a potential signal for a bullish trend reversal or an upcoming upward move.

By utilizing the divergence strategy with the Aroon oscillator, traders aim to identify these divergences as early as possible to make informed trading decisions. However, it’s important to note that divergences alone may not guarantee accurate predictions, and additional analysis and confirmation from other indicators or tools are often recommended to validate potential trading opportunities.


Advantages and Disadvantages 


1. Ease of Calculation and Interpretation: One of the primary advantages of the Aroon oscillator is its simplicity. It is relatively easy to calculate and interpret, making it accessible to traders of different experience levels. The oscillator is derived from the Aroon Up and Aroon Down indicators, which measure the time it takes for prices to reach new highs and lows within a given period.

2. Identifying Trend Changes: The Aroon oscillator is particularly useful for identifying potential market trends. It can provide signals when a trend is losing momentum or when a new trend is emerging. Traders can use these signals to anticipate trend reversals, adjust their strategies, or consider potential entry or exit points.

3. Complementary to Other Indicators: The Aroon oscillator can be effectively used alongside other technical indicators. By combining it with additional tools, such as moving averages or volume analysis, traders can enhance their analysis and gain more confidence in their trading decisions. This integration can help confirm or refine signals generated by the Aroon oscillator, improving the overall accuracy of trading strategies.


1. False Signals in Choppy Markets: One limitation of the Aroon oscillator is its tendency to produce false signals in choppy or range-bound markets. In such market conditions, where price moves within a confined range without establishing a clear trend, the oscillator may generate conflicting signals or fail to provide reliable indications of trend changes. Traders should exercise caution when relying solely on the Aroon oscillator in such market environments.

2. Ineffectiveness in Low Volatility Markets: The Aroon oscillator’s effectiveness can be diminished in markets with low volatility. When price movements are limited and lack significant momentum, the oscillator may produce weak or ambiguous signals, making it challenging to accurately interpret the market’s directional bias. Traders should consider complementing the Aroon oscillator with other volatility indicators or employ alternative strategies during periods of low volatility.

3. Lagging Indicator: The Aroon oscillator is considered a lagging indicator, providing signals after a trend has begun. As a result, traders may experience delayed entry or exit points compared to leading indicators. It is essential to understand that the oscillator may not identify trend changes immediately, potentially causing traders to miss out on some early opportunities within a new trend.



The Aroon oscillator offers traders a valuable tool for identifying trend changes in the market. Its ease of calculation and interpretation makes it accessible to traders of varying skill levels. By using the Aroon oscillator, traders can enhance their decision-making process and potentially improve their trading outcomes.

The advantages of the Aroon oscillator lie in its simplicity and ability to identify trend changes. Traders can easily calculate and interpret the oscillator, allowing quick analysis and decision-making. Moreover, the Aroon oscillator can serve as a reliable indicator of potential trend shifts, enabling traders to adjust their strategies accordingly and capitalize on emerging market opportunities.

However, it is essential to acknowledge the limitations of the Aroon oscillator. False signals may occur in choppy or range-bound markets, potentially leading to incorrect trading decisions. Additionally, the oscillator may be less effective in low-volatility environments, as price movements may be limited and fail to provide significant signals. Traders should be mindful of these drawbacks and consider utilizing other technical indicators or complementary tools to strengthen their analysis.

Incorporating the Aroon oscillator into a trading strategy can be beneficial, mainly when used in conjunction with other technical indicators and comprehensive market analysis. By combining multiple tools and techniques, traders can increase their confidence in trading decisions and improve their overall trading performance.

To maximize the effectiveness of the Aroon oscillator, traders should practice proper risk management techniques and thoroughly backtest their strategies. This will enable them to assess the suitability and reliability of the oscillator within their specific trading style and objectives.


Article Overview

Are you looking for a powerful technical indicator that can help you identify trend changes in the market? Look no further than the Aroon oscillator. The Aroon oscillator was developed in 1995 by Tushar Chande and is used to determine whether a stock is trending or not and how strong the current trend is. It can also be used to identify when a new trend is emerging.

The Aroon oscillator consists of two lines – the Aroon up line and Aroon down line. The Aroon up line measures the number of periods since the highest price during the look-back period was reached. The Aroon down line measures the number of periods since the lowest price during the look-back period. Typically, a 25-period setting is used for the look-back period.

The Aroon oscillator is then calculated by subtracting the Aroon down line from the Aroon up line. This results in a number that fluctuates between -100 and +100. A positive number indicates an uptrend, while a negative number indicates a downtrend. The stronger the uptrend or downtrend, the closer the oscillator will be to the extremes of +100 or -100.

When the Aroon oscillator crosses above zero, it signals the beginning of an uptrend. When it crosses below zero, it signals the start of a downtrend. Traders often use the zero line crossovers and other indicators to confirm trend changes and entry/exit points. The Aroon oscillator is especially useful for identifying sideways consolidations and the start of new trends early.

Some key applications of the Aroon oscillator in trading include:

– Identifying strong trends and weak trends
– Spotting imminent trend changes and reversals
– Confirming trend direction for entry and exit timing
– Determining overbought/oversold levels

The Aroon oscillator is a very flexible indicator that can provide valuable insights into the current market environment. Whether you are a short-term trader looking for entries and exits or a long-term investor trying to time major trend changes, integrating the Aroon oscillator into your analysis can give you an edge. Everything you need to know about the Aroon oscillator, from its definition and computation to its applications in trading, is covered here.

FAQs About the Aroon Oscillator

1. What is the difference between the Aroon indicator and the Aroon oscillator?

The Aroon indicator measures the time elapsed since the highest high and lowest low over a specific period of time, while the Aroon oscillator is calculated by subtracting the Aroon down from the Aroon up.

2. Can the Aroon oscillator be used in any time frame?

 Yes, the Aroon oscillator can be used anytime, from intraday to monthly charts.

3. How does the Aroon oscillator differ from other momentum indicators?

The Aroon oscillator is unique in that it measures both the strength and direction of a trend, while other momentum indicators typically only measure one or the other.

4. What is the best way to use the Aroon oscillator in trading?

The best way to use the oscillator in trading is to use it with other technical indicators and confirm or filter signals.

5. What are the limitations of the Aroon oscillator?

 The Aroon oscillator may give false signals in choppy or range-bound markets and may be ineffective in low-volatility markets.

6. Can the Aroon oscillator be used for long-term investing?

The Aroon oscillator can be used for long-term investing, but it is best used with other fundamental and technical analysis tools.

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