what is the price rate of change roc indicator 
the price rate of change roc is a momentum based technical indicator that measures the percentage change in price between the current price and the price a certain number of periods ago the roc indicator is plotted against zero with the indicator moving upwards into positive territory if price changes are to the upside and moving into negative territory if price changes are to the downside the indicator can be used to spot divergences overbought and oversold conditions and centerline crossovers image by sabrina jiang investopedia 2021formula for the price roc indicator current price price n periods agoprice n periods ago 100 begin aligned bigg frac text current price text price n text periods ago text price n text periods ago bigg times100 end aligned price n periods agocurrent price price n periods ago 100 