The Slow Relative Strength Index (SRSI) is a price-following oscillator which was presented by Vitali Apirine in the April 2015 issue of the TASC magazine. It measures change in price movements relative to an exponential moving average (EMA). Like the relative strength index, it oscillates between zero and 100. SRSI is considered overbought when above 80 and oversold when below 20. SRSI can also generate signals by looking for divergences and centerline crossovers.
The SRSI is calculated using the following formula:
SRSI = 100 – [100/(1+SRS)]
SRS = Average positive difference/Average negative differencen
The SRSI measures the strength of a security relative to a sixday EMA. The closing price is used for this EMA. The difference is positive when the close is above the six-day EMA. Positive difference = [Close – Moving average]. Difference is negative when the close is below the six-day EMA. Negative difference = [Moving average – Close]. Negative difference values are expressed as positive values, not negative values. If the closing price equals the six-day EMA, then difference = 0 (no change). Smooth positive and negative difference values are based on Wilder’s smoothing technique.
Category NinjaTrader 8 Indicators and More
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