Aroon Oscillator: A Guide for Traders and Investors
The world of trading and investing can be complex, so investors need reliable technical indicators to make informed decisions. The Aroon Oscillator, developed by Tushar Chande in 1995, is one commonly used technical indicator traders use to measure the strength of a trend and identify potential trend reversals. This article will explore the Aroon Oscillator’s significance in trading and investing.
Introduction
The Aroon Oscillator is a technical indicator that measures the strength of a trend and identifies potential trend reversals. The oscillator is derived from the Aroon Up and Aroon Down indicators, also developed by Tushar Chande.
The Aroon Up and Aroon Down indicators measure the periods since a security’s highest high and lowest low, respectively. The Aroon Oscillator is then calculated by subtracting the Aroon Down from the Aroon Up. The oscillator is plotted as a line graph oscillating between -100 and +100.

How Aroon Oscillator Works
To calculate the Aroon Up and Aroon Down indicators, we need to determine the number of periods since a security’s highest high and lowest low. For example, if we want to calculate the Aroon Up indicator for a 25-day period, we would determine the number of periods since the highest high. The formula for calculating the Aroon Up is as follows:
Aroon Up = ((25 - Periods since highest high)/25) x 100
Similarly, to calculate the Aroon Down indicator, we would determine the number of periods since the lowest low within the 25-day period. The formula for calculating the Aroon Down is as follows:
Aroon Down = ((25 - Periods since lowest low)/25) x 100
The Aroon Oscillator is then calculated by subtracting the Aroon Down from the Aroon Up. The formula for calculating the Aroon Oscillator is as follows:
Aroon Oscillator = Aroon Up - Aroon Down
The oscillator is plotted as a line graph oscillating between -100 and +100. If the Aroon Up is greater than the Aroon Down, the oscillator will be positive, indicating an uptrend. Conversely, if the Aroon Down is greater than the Aroon Up, the oscillator will be negative, indicating a downtrend.
Example scanners based on Aroon Oscillator
Interpretation of Aroon Oscillator
Some of the ways traders can use the AO are:
Identifying Trend Reversals
The Aroon Oscillator can also be used to identify potential trend reversals. When the oscillator crosses the zero line from above, it indicates a possible trend reversal from an uptrend to a downtrend. Conversely, when the oscillator crosses the zero line from below, it shows a potential trend reversal from a downtrend to an uptrend. Traders can use this signal to enter or exit trades depending on their strategy.
Identifying Trend Strength
The Aroon Oscillator can also be used to measure the strength of a trend. If the oscillator is above 50, the current uptrend is strong. Similarly, the current downtrend is substantial if the oscillator is below -50. Traders can use this information to adjust their strategy accordingly.
Aroon Oscillator Trading Strategies
The Aroon Oscillator can be used in various trading strategies, depending on the trader’s goals and risk tolerance. Some popular trading strategies include:
Trend Following
Traders can use the Aroon Oscillator to identify the direction of the trend and enter trades accordingly. If the positive oscillator indicates an uptrend, traders can enter long positions. Conversely, traders can enter short positions if the negative oscillator indicates a downtrend.
Trend Reversals
Traders can also use the Aroon Oscillator to identify potential trend reversals and enter trades accordingly. When the oscillator crosses the zero line from above, indicating a possible trend reversal from an uptrend to a downtrend, traders can enter short positions. Conversely, traders can enter long positions when the oscillator crosses the zero line from below, indicating a potential trend reversal from a downtrend to an uptrend.
Advantages of Aroon Oscillator
The Aroon Oscillator has several advantages, making it a valuable tool for traders and investors. Some of these include:
- Easy to understand: The Aroon Oscillator is easy to understand and interpret, making it a valuable tool for novice and experienced traders.
- Customizable: The Aroon Oscillator can be customized to suit different trading strategies and timeframes.
- Versatile: The Aroon Oscillator can be used with other technical indicators to confirm trading signals.
Limitations of Aroon Oscillator
While the AO has several advantages, it also has some limitations that traders and investors should know. Some of these limitations include the following:
- Lagging Indicator: The Aroon Oscillator is a lagging indicator that may not provide real-time signals.
- False Signals: The Aroon Oscillator can generate false signals, especially in choppy or sideways markets.
- Not a Standalone Indicator: The Aroon Oscillator should not be used as a standalone indicator but in conjunction with other technical indicators to confirm trading signals.
Example strategy based on Aroon Oscillator
The bottom line
In conclusion, the Aroon Oscillator is a valuable technical indicator that traders and investors can use to measure the strength of a trend and identify potential trend reversals. Traders can use the oscillator in various trading strategies, depending on their goals and risk tolerance. However, they should also be aware of the limitations of the Aroon Oscillator and use it in conjunction with other technical indicators to confirm trading signals. Overall, the Aroon Oscillator is a valuable tool that traders and investors should consider adding to their technical analysis toolkit.