Developed by Richard Arms, Ease of Movement (EMV) is a volume-based oscillator that fluctuates above and below the zero line. As its name implies, it is designed to measure the "ease" of price movement. It highlights the relationship between volume and price changes and is particularly useful for assessing the strength of a trend.
The Ease of Movement default is set at 10 days smoothing by an exponential moving average.
High positive values indicate the price is increasing on low volume: strong negative values indicate the price is dropping on low volume.
The moving average of the indicator can be added to act as a trigger line, which is similar to other indicators like the MACD.