The Stochastic Relative Strength Index, referred to as StochRSI, is a technical analysis indicator used to determine whether an asset is overbought or oversold, and is also used to determine the current market situation. As the name suggests, StochRSI is a derivative of the standard Relative Strength Index (RSI) and is therefore considered an index that measures the index. It is an oscillator that fluctuates above and below the center line.
StochRSI was originally described in a 1994 book titled The New Technical Trader written by Stanley Kroll and Tushar Chande. It is often used by stock traders but also works in other trading environments such as the Forex and cryptocurrency markets.
How does StochRSI work?
The StochRSI is generated from the standard RSI by applying the Stochastic Oscillator generation formula. The result is a single numeric rating that oscillates around a centerline (0.5) within a range of 0-1. However, the modified version of the StochRSI multiplies the result by 100, so the value is between 0 and 100 instead of 0 and 1. A simple moving average (SMA) over a 3-day period is often referenced as well as the StochRSI trend, as a signal line designed to reduce the risk of false signal trading.
The standard Stochastic Oscillator index formula depends on the asset's closing price and the high and low prices for a set period. However, when using the formula to calculate StochRSI, it uses the RSI data directly (without taking price into account).
Stoch RSI = (Current RSI - Lowest RSI)/(Highest RSI - Lowest RSI)Like the standard RSI, the most common timeframe used with the StochRSI is 14. The 14 periods involved in the StochRSI calculation are based on the chart timeframe. So a daily chart would show the last 14 days (bars) and an hourly chart would show the StochRSI generated over the last 14 hours.
Periods can be set to days, hours or even minutes, and how they are used varies from trader to trader (based on their situation and strategy). The number of periods can also be adjusted upward or downward to identify long-term or short-term trends. Setting the period value to 20 is a very popular choice for the StochRSI indicator.
As mentioned above, some StochRSI chart patterns specify range values of 0 to 100 instead of 0 to 1. In these charts, the center line is 50 instead of 0.5. Therefore, an overbought signal that normally occurs at 0.8 would be expressed as 80, while an oversold signal would be expressed as 20 instead of 0.2. The charts with 0-100 settings may look slightly different, but the actual explanation of the principles is basically the same.
How to use StochRSI?
The StochRSI index is most significant when it appears near the upper and lower limits of its range. Therefore, the main use of this indicator is to identify potential buying and selling points, as well as reversals in price. Therefore, a value of 0.2 or below would indicate that the asset may be oversold, while a value of 0.8 or above would indicate that the asset may be overbought.
Additionally, values closer to the center line can also provide traders with information about market trends. For example, when the center line serves as a support line and the StochRSI line moves steadily above 0.5, especially when the value approaches 0.8, it may indicate that it continues to be bullish or is trending upward. Likewise, when the value is consistently below 0.5 and approaches 0.2, it indicates a decline or a downward trend.
StochRSI and RSI
Both StochRSI and RSI are banded oscillator indices that allow traders to more easily identify potential overbought and oversold conditions, as well as possible price reversal points. Simply put, Standard RSI is an index that tracks asset prices and trends based on a set time frame (period).
However, compared to the Stochastic RSI, the Standard RSI is a relatively small-changing indicator that generates only a small number of trading signals. The standard RSI index can be generated into the more sensitive StochRSI index through the stochastic oscillator formula. Therefore, the number of signals it generates will be greater, providing traders with more opportunities to identify market trends and potential buying and selling points.
In other words, StochRSI is a relatively unstable indicator, which also makes it a more sensitive TA tool that can provide traders with more trading signals, but it is also more risky because it often generates considerable Too much noise (error signals). As mentioned above, utilizing a simple moving average (SMA) is a common way to reduce these false signals and risks, and in most cases the 3-day SMA has been used as the default setting for the StochRSI indicator.
Summary thoughts
Since the StochRSI is faster and more sensitive to market movements, it can be a very useful indicator for analysts, traders, and investors in both the short and long term. However, more trading signals also mean more risk, so the StochRSI should be used in conjunction with other technical analysis tools that can assist traders in confirming the signals it generates. It is also important to note that the cryptocurrency market is more volatile than the traditional currency market, so it may generate more false trading signals.