The Inertia indicator is the Relative Volatility Index (RVI) smoothed with a Least Squares Moving Average. Like the RVI, the Inertia ranges from 0 to 100. Inertia signals long-term trends. Positive Inertia is indicated by values above 50, while values below 50 indicate negative inertia (slowing).

The Inertia indicator was developed by Donald Dorsey and was introduced his article in September, 1995 issue of Technical Analysis of Stocks & Commodities magazine.


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