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Stochastic Relative Strength Index (SRSI)

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The Stochastics indicator is an oscillator that compares a securities closing price in relationship to its price range over a given period of time. The RSI indicator is also an oscillator which represents the internal strength of the equities price. Both these indicators work on an overbought and oversold formula.

The Stochastics RSI is a combination of these two indicators, where the %K within the Stochastics formula is replaced by the RSI. The formula is then set on a 0 to 100 scale for both the Stochastics indicator as well as the RSI is read in much the same manner as the traditional RSI. When the SRSI reaches up into the upper region above the upper threshold line, the market is considered overbought and anticipate a reversal of the trend. When the SRSI reaches down into the lower region below the lower threshold, the market is considered oversold and a reversal is anticipated. Traditionally, the upper threshold marker is set at 70% and the lower marker is set at 30%.


The calculation for the SRSI is here:

StochRSI = (RSI - LowRSIn) / (HighRSIn - LowRSIn)

RSI: The current level of the RSI indicator.
LowRSIn: The lowest level the RSI reached over the last n periods.
HighRSIn: The highest level the RSI reached over the last n periods.

Buy/Sell Signals

A buy signal occurs when the SRSI line crosses from below the lower threshold to above the lower threshold into the channel. A sell signal occurs when the SRSI line crosses from above the upper threshold to below the upper threshold into the channel.


Right-click on the SRSI button in your Indicator toolbar and select SRSI Settings. The Preferences Tab will open in the Control Panel and the SRSI preferences will be displayed. (Once you click on the chart, the Preference tab will go back to chart settings.)

Restore Settings: TNT Default will change your settings back to the original software settings. My Default will change current settings to your personalized default settings. Apply To All Charts will apply your selected settings on all open charts. Save As My Default will save your current personal settings.

SRSI Period: Specify the number of days to be used in calculating the SRSI.

Underlying RSI Period: Specify the number of days used in calculating the Underlying RSI.

Calculation: Choose from Exponential, Simple, or Wilder's Smoothing.

Line: Choose the color, line style, and line thickness of your line.

View up to four Thresholds at values and colors of your choice. When calculating buy/sell signals, Threshold 1 is used as the upper threshold and Threshold 2 is used as the lower threshold (default values set at 70 and 30).

Choose when you want Buy/Sell Arrows to show and what color.