What is a rate of change?

Answer by  brandi10 (816)

The rate of change is the rate at which a stock has changed over a given period of time within the stock market day.

Answer by  RoseNy (500)

The rate of change (ROC) reflects the percentage in the change of how much a stock costs now versus how much it cost during an earlier time period. The ROC of a stock is used to determine patterns and predict how well the stock should perform over time.