Индикатор RSI

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Relative Strength Index — What is RSI

RSI Definition

Relative Strength Index is an indicator developed by Welles Wilder to assess the strength or the weakness of the current price movements and to measure the velocity of price changes by comparing price increases with its losses over a certain period.

For more information how to set the indicator in the terminal please click here

How to Use RSI Indicator

The Relative Strength Index allows to identify possible overbought and oversold areas, but should be considered within trend analysis:

  • Generally if the RSI indicator climbs above 70, the asset may be overbought;
  • If the RSI indicator drops below 30, the asset may be oversold.

Leaving extreme areas the indicator may suggest possible corrections or even trend changes:

  • Crossing the overbought boundary from above, the RSI signals a possible sell opportunity;
  • Crossing the oversold boundary from below, the RSI signals a possible buy opportunity.

Convergence/divergence patterns may indicate possible trend weakness:

  • If the price climbs to a new high, but the indicator does not, that may be a sign of the uptrend weakness;
  • If the price falls to a new low, but the indicator does not, that may be a sign of the downtrend weakness.

Relative Strength Index (RSI) Indicator

RSI Trading Strategy

RSI trading strategy aims to generate buy and sell signals by the horizontal lines that appear on the chart at the 70 and 30 values. As we have already mentioned above, a move under 30 indicates an oversold condition and a move above 70 signals an overbought condition.

Thus, if a trader is looking for a buying opportunity, he watches the indicator dip under 30. A crossing back above 30 is considered by many traders as a confirmation that the trend has turned up. Conversely, if a trader seeks for a selling opportunity, he watches the indicator cross above the 70 line.

Relative Strength Index Formula (RSI Calculation)

To calculate the RSI, it is necessary to determine the value of the relative strength (RS) which, according to the advice of the author of the index is calculated for a 14-day period.

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How to use Relative Strength Index in trading platform

Use indicators after downloading one of the trading platforms, offered by IFC Markets.

StochRSI

Table of Contents

StochRSI

Introduction

Developed by Tushar Chande and Stanley Kroll, StochRSI is an oscillator that measures the level of RSI relative to its high-low range over a set time period. StochRSI applies the Stochastics formula to RSI values, rather than price values, making it an indicator of an indicator. The result is an oscillator that fluctuates between 0 and 1.

In their 1994 book, The New Technical Trader, Chande and Kroll explain that RSI can oscillate between 80 and 20 for extended periods without reaching extreme levels. Notice that 80 and 20 are used for overbought and oversold instead of the more traditional 70 and 30. Traders looking to enter a stock based on an overbought or oversold reading in RSI might find themselves continuously on the sidelines. Chande and Kroll developed StochRSI to increase sensitivity and generate more overbought/oversold signals.

Calculation

StochRSI measures the value of RSI relative to its high/low range over a set number of periods. The number of periods used to calculate StochRSI is transferred to RSI in the formula. For example, 14-day StochRSI would use the current value of 14-day RSI and the 14-day high-low range for 14-day RSI.

Click here for an Excel Spreadsheet showing the start of a StochRSI calculation.

Interpretation

It is important to remember that StochRSI is an indicator of an indicator, which makes it the second derivative of price. This means it is two steps (formulas) removed from the price of the underlying security. Price has undergone two changes to become StochRSI. Converting prices to RSI is one change. Converting RSI to the Stochastic Oscillator is the second change. This is why the end product (StochRSI) looks much different than the original (price).

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StochRSI has characteristics similar to most bound momentum oscillators. First, it can be used to identify overbought or oversold conditions. A move above .80 is considered overbought, while a move below .20 is considered oversold. Second, it can be used to identify the short-term trend. As a bound oscillator, the centerline is at .50. StochRSI reflects an uptrend when consistently above .50 and a downtrend when consistently below .50. Because this indicator is quite volatile, some smoothing with a moving average can help for short-term trend identification.

Overbought/Oversold

Trend identification is the key to successfully choosing between overbought and oversold levels. It is important to look for oversold conditions when the bigger trend is up and overbought conditions when the bigger trend is down. In other words, look for trades in the direction of the bigger trend. 14-day StochRSI would be considered a short-term indicator. Therefore, it is important to identify the medium-term trend when looking for overbought and oversold conditions.

Chart 2 shows Boeing in a medium-term uptrend with StochRSI(14) becoming oversold in January and February. First, the medium-term was deemed up because the 10-day SMA was above the 60-day SMA. With an uptrend in place, oversold conditions were preferred to overbought conditions. StochRSI became oversold at least four times from December to February. For what it’s worth, 14-day RSI did not become oversold during this timeframe because it is less sensitive. However, oversold is not the same thing as bullish; oversold conditions instead serve as a warning to watch for a bounce. A catalyst is still needed to solidify the low and signal an actual upturn. In this example, chartists could look for prices to break above the 10-day SMA or for StochRSI to break above .50, its centerline.

Chart 3 shows Flour Corp (FLR) within a downtrend and StochRSI registering overbought readings. First, the medium-term trend is down because the 10-day SMA is below the 60-day SMA. This means oversold readings are ignored and overbought readings become the focus. StochRSI moved above .80 in mid-October and early November (red arrows). These overbought readings suggested that the oversold bounce could end soon. Confirmation came when StochRSI moved back below .50 (red dotted lines). Chartists could also look for the stock to break back below its 10-day SMA to signal a short-term downturn.

Trend >

StochRSI is quite a volatile oscillator that frequently becomes overbought and oversold. For short-term trend identification, it can help to lengthen the calculation period and apply a short moving average to smooth the data. Momentum favors rising prices when the 10-day SMA of StochRSI is above .50 and falling prices when below .50. Chart 4 shows Chevron (CVX) with 20-day StochRSI and a 5-day SMA of the indicator. The 5-day SMA moved above .50 in mid-February just after the stock gapped higher. The gap and moving average cross above .50 were short-term bullish signals. A falling flag/wedge formed in late February. Notice how CVX found support in the gap zone. The uptrend continued with a flag/wedge breakout and the stock advanced above 80. Even though StochRSI dipped below .50 in late March, the 5-day SMA held above .50 to keep the uptrend alive until late April. This short-term signal turned into a two-month uptrend.

Unfortunately, not all signals are this picture perfect. There will be whipsaws, even when using a 5-day SMA with 20-day StochRSI. For example, a consolidation during a trend can cause the 5-day SMA of StochRSI to gyrate above/below the .50 line before continuing or reversing the trend. Chart 5 shows Yahoo! with 20-day StochRSI and its 5-day SMA for smoothing. The moving average broke above .50 in mid-February to turn momentum bullish. This was followed by a resistance breakout for Yahoo! on the first day of March. As the stock consolidated with a falling channel in late March, the 5-day SMA for StochRSI(20) dipped below .50 twice (red oval). These dips proved short-lived as the stock broke channel resistance and StochRSI moved above .80 to show strength. The trend did not end until the 5-day SMA moved below .50 AND Yahoo! gapped down.

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Chart 6 shows Yahoo! with a bearish signal from StochRSI that did not take hold right away. The 5-day SMA for 20-day StochRSI moved below .50 to turn momentum bearish the second week of October. Yahoo! broke support for confirmation, but this break did not hold as the stock surged to 18 a few days later. The immediate recovery and bounce back above 17 formed a bear trap. Even though Yahoo! surged, the 5-day SMA for StochRSI remained below .50 and momentum did not confirm. The subsequent gap above 17.50 turned out to be an exhaustion gap as Yahoo! failed at resistance (18), filled the gap, broke support again and moved sharply lower into November. Talk about volatility.

Conclusion

StochRSI is like RSI on steroids. RSI produces relatively fewer signals and StochRSI dramatically increases the signal count. There will be more overbought/oversold readings, more centerline crosses, more good signals and more bad signals. Speed comes at a price. This means it is important to use StochRSI with other aspects of technical analysis for confirmation. The examples above use gaps, support/resistance breaks, and price patterns to confirm StochRSI signals. Chartists can also employ other complementary indicators, such as On Balance Volume (OBV) or the Accumulation Distribution Line. These volume-based indicators do not overlap with momentum oscillators. Chartists should also experiment with various settings and learn the nuances of StochRSI before using it in the real world.

Using with SharpCharts

The StochRSI indicator can be charted as an indicator using the SharpCharts tool. The “parameters” value specifies the number of periods used in the calculation (default is 14). The indicator can be set above, below or behind the underlying price plot. A moving average can be applied by clicking the advanced options arrow (green) and adding an overlay. Click here to see a live example of StochRSI.

Suggested Scans

Oversold StochRSI in medium-term uptrend

This scan starts with stocks that have an average price of $10 or greater over the last three months and average volume greater than 40,000. The first filter selects securities within a medium-term uptrend by looking for those where the 10-day SMA is greater than the 60-day SMA. The screen then selects stocks that are short-term oversold by looking for those trading below their 10-day SMA and with StochRSI(14) below .10. This scan often returns many stocks and further refinement may be needed.

Overbought StochRSI within a medium-term downtrend

This scan starts with stocks that have an average price of $10 or greater over the last three months and average volume greater than 40,000. The first filter selects securities within a medium-term downtrend by looking for those where the 10-day SMA is less than the 60-day SMA. The screen then selects stocks that are short-term overbought by looking for those trading above their 10-day SMA and with StochRSI(14) above .90. This scan often returns many stocks and further refinement may be needed.

For more details on the syntax to use for StochRSI scans, please see our Scan Syntax Reference in the Support Center.

Further Study

Constance Brown’s Technical Analysis for the Trading Professional takes our exploration of RSI to the next level with bull market and bear market ranges, positive and negative reversals, and projections based on RSI. Some methods of Andrew Cardwell, her RSI mentor, are also explained and refined in this book.

Stochastic RSI (STOCH RSI)

Contents

DEFINITION

The Stochastic RSI indicator (Stoch RSI) is essentially an indicator of an indicator. It is used in technical analysis to provide a stochastic calculation to the RSI indicator. This means that it is a measure of RSI relative to its own high/low range over a user defined period of time. The Stochastic RSI is an oscillator that calculates a value between 0 and 1 which is then plotted as a line. This indicator is primarily used for identifying overbought and oversold conditions.

HISTORY

The Stochastic RSI (Stoch RSI) indicator was developed by Tushard Chande and Stanley Kroll. They introduced their indicator in their 1994 book The New Technical Trader.

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CALCULATION

THE BASICS

It is important to remember that the Stoch RSI is an indicator of an indicator making it two steps away from price. RSI is one step away from price and therefore a stochastic calculation of the RSI is two steps away. This is important because as with any indicator that is multiple steps away from price, Stoch RSI can have brief disconnects from actual price movement. That being said, as a range bound indicator, the Stoch RSI’s primary function is identifying crossovers as well as overbought and oversold conditions.

WHAT TO LOOK FOR

Overbought/Oversold

Overbought and Oversold conditions are traditionally different than the RSI. While RSI overbought and oversold conditions are traditionally set at 70 for overbought and 30 for oversold, Stoch RSI are typically .80 and .20 respectively. When using the Stoch RSI, overbought and oversold work best when trading along with the underlying trend.

During an uptrend, look for oversold conditions for points of entry.

During a downtrend, look for overbought conditions for points of entry.

SUMMARY

When using Stoch RSI in technical analysis, a trader should be careful. By adding the Stochastic calculation to RSI, speed is greatly increased. This can generate many more signals and therefore more bad signals as well as the good ones. Stoch RSI needs to be combined with additional tools or indicators in order to be at its most effective. Using trend lines or basic chart pattern analysis can help to identify major, underlying trends and increase the Stoch RSI’s accuracy. Using Stoch RSI to make trades that go against the underlying trend is a dangerous proposition.

HOW TO USE IN TRADINGVIEW

  1. Navigate to https://www.tradingview.com/
  2. On the landing page, enter a symbol and click «Launch Chart»
  3. Within the Toolbar along the top of the chart select «Indicators» and choose the one you would like to add to your chart.
  4. To make changes to your Indicator you will need to access the Formatting Window.
  5. You can access the Formatting Window by either clicking on the Blue «Format» button in the Chart Header next to the Indicator name, or by right clicking on the Indicator in the chart itself and selecting «Format».

INPUTS

The time period to be used in calculating the %K. 3 is the default.

% D = Percent of Deviation between price and the average of previous prices (Momentum). The time period to be used in calculating the %D. 3 is the default.

You can read more about K & D calculation here: Stochastic_(STOCH)

RSI Length

The time period to be used in calculating the RSI

Stochastic Length

The time period to be used in calculating the Stochastic

RSI Source

Determines what data from each bar will be used in calculations. Close is the default.

STYLE

Can toggle the visibility of the %K as well as the visibility of a price line showing the actual current value of the %K. Can also select the %K Line’s color, line thickness and visual style (Line is the Default).

Can toggle the visibility of the %D as well as the visibility of a price line showing the actual current value of the %D. Can also select the %D Line’s color, line thickness and visual style (Line is the Default).

Upper Band

Can toggle the visibility of a line indicating overbought levels. Can also select the line’s value, line thickness, value and visual type (dashes is the default).

Lower Band

Can toggle the visibility of a line indicating oversold levels. Can also select the line’s value, line thickness, value and visual type (dashes is the default).

Background

Toggles the visibility of a Background color within the Bands. Can also change the Color itself as well as the opacity

Precision

Sets the number of decimal places to be left on the indicator’s value before rounding up. The higher this number, the more decimal points will be on the indicator’s value.

PROPERTIES

Last Value on Price Scale

Toggles the visibility of the Indicator Value on the vertical axis.

Arguments in Header

Toggles the visibility of the indicator’s name and settings in the upper left hand corner of the chart.

Scaling

Scales the indicator to either the Right or to the Left.

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