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Stochastic Oscillator


The Stochastic Oscillator is a momentum indicator in financial technical analysis that compares a particular closing price of a security to its price range over a certain period of time. The oscillator’s values range from zero to 100. A reading below 20 is typically considered oversold, while a reading above 80 is considered overbought.


The phonetics of the keyword “Stochastic Oscillator” is: stuh-kas-tik ah-suh-ley-ter.

Key Takeaways

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  1. The Stochastic Oscillator is a momentum indicator that compares the closing price of a security to its price range over a certain period of time. This helps to predict price turning points by identifying the location of the close within the day’s range.
  2. Generally, the Stochastic Oscillator ranges between 0 to 100. A value above 80 is considered overbought, indicating a potential price pullback. Alternatively, a value below 20 is considered oversold, signaling a potential price increase. It’s crucial to remember that these ranges and values can vary depending on market conditions.
  3. Stochastic Oscillator plays a major role in trend analysis and identification, divergences, generating trading signals etc. However, it should be used in conjunction with other technical analysis methods to increase the accuracy and reliability of the predicted trends and signals.



The Stochastic Oscillator is a critical technical indicator in business and finance that helps traders predict price trends and potential reversals by measuring the closing price of a security in relation to its price range over a specified period. This indicator is important because it provides a range-bound measure, typically between 0 and 100, helping traders identify overbought and oversold conditions. When the Stochastic Oscillator exceeds 80, it signals that the asset could be overbought, and prices may decline. Conversely, a reading below 20 suggests the asset could be oversold, indicating potential for a price increase. Therefore, the Stochastic Oscillator offers an important tool for making effective and informed trading decisions.


The Stochastic Oscillator is an important tool utilized in the world of finance to provide insights into potential reversals in market trends by comparing a particular closing price of a security to a range of its prices over a certain period of time. The main purpose of this momentum indicator is to generate buy and sell signals based on the comparison between the security’s closing price and its high-low range over a selected time period. It is fundamentally used to predict price turns by identifying overbought and oversold conditions in the market.In a rapidly changing market, the Stochastic Oscillator assists investors or traders in making informed decisions, thereby maximizing their potential gains or limiting their losses. When the market is trending upward, a security is said to be overbought if the oscillator is over 80 and this could be a signal for selling. Conversely, if the market is trending downward causing the oscillator to fall below 20, the security is considered oversold and it may be a good time to buy. It’s worth noting that the oscillator can stay in overbought or oversold zones for some time, especially during strong trends and therefore should be used in conjunction with other indicators to confirm their signals.


1. Stock Trading Analysis: The Stochastic Oscillator is frequently used by traders in the stock market. For example, if a particular stock has had a high closing price relative to its price range over a set period of time, it would receive a high reading from the oscillator. On the other hand, if the closing price is continually near the lowest part of its range, this would result in a low reading. If the Stochastic Oscillator reading goes above 80, it’s typically considered overbought, dictating a potential price drop. A reading under 20 indicates oversold conditions, suggesting a potential price increase. Traders should look for buys when the oscillator is down and consider sell opportunities when it’s up. 2. Foreign Currency Exchange (Forex): The Stochastic Oscillator is frequently used in the Forex market. A trader dealing in USD/EUR might use this tool to analyze the closing price of the dollar over a specific timeframe relative to the range of prices over that same period. The oscillator would then be used to predict future fluctuations, helping the trader make decisions about buying or selling. The same principles of overbought or oversold signals used in stock trading can be applied in Forex trading.3. Cryptocurrency Trading: Cryptocurrency traders also use Stochastic Oscillators to analyze the volatility of crypto prices over a specific period. If a cryptocurrency like Bitcoin has a high oscillator reading, this might indicate that it’s overbought, and a price retracement might soon follow. Conversely, a low reading could suggest that the currency is oversold, and an upward price swing could be on the horizon. For instance, if the oscillator dips below 20, a trader might see it as a buying opportunity, whereas if it crosses above 80, it might be time to sell.

Frequently Asked Questions(FAQ)

What is a Stochastic Oscillator?

A Stochastic Oscillator is a momentum indicator used in technical analysis of securities. It compares a particular closing price of a security to a range of its prices over a certain period of time.

How is the Stochastic Oscillator calculated?

The calculation of a stochastic oscillator involves four steps; find the highest price (high) and lowest price (low) over a given period, calculate the current close (close), find difference between close and low and between high and low, finally, the Stochastic Oscillator is the percentage result from dividing the difference of close and low from the difference of high and low.

What does a high or low value on the Stochastic Oscillator indicate?

When the Stochastic Oscillator yields a value over 80, it’s typically interpreted as an asset being ‘overbought‘ and could indicate a trend reversal or pullback. Alternatively, a value under 20 signifies ‘oversold‘ conditions, suggesting the asset is undervalued and could rebound.

What does 14 in 14-period Stochastic Oscillator signify?

A 14-period Stochastic Oscillator uses the past 14 periods (days, weeks, months, etc., depending on the chart) in its calculation, comparing the current price to the range of prices over that 14-period span.

Can the Stochastic Oscillator predict prices?

The Stochastic Oscillator is not a predictive tool, it only indicates the current state of the market. A high or low reading from the indicator merely describes the market’s recent behavior.

How is the Stochastic Oscillator used in trading strategy?

Traders use Stochastic Oscillators in several ways, including generating potential buy and sell signals, identifying overbought and oversold conditions, or spotting bullish and bearish divergences that may precede a price reversal. It is often used in conjunction with other technical indicators.

Why do traders use the Stochastic Oscillator?

The Stochastic Oscillator helps traders to identify potential reversals in the market. It’s particularly useful in trading range-bound securities because it detects overbought and oversold conditions.

Related Finance Terms

  • Momentum Indicator
  • Price Oscillator
  • Signal Line
  • Overbought and Oversold Levels
  • Trend Reversals

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