The prices of volatile stocks can fluctuate so much that it becomes difficult to compare it to a more stable invesment such as fixed deposit or bonds. CAGR or compound annual growth rate evens out the returns of your investment over a period longer than a year so that you can easily compare it with other stable asset classes.
Enter the purchasing price of a stock in the "Price at the beginning" field, selling price or current market price in the "Price at the end" field
enter the holding period in "Number of years" field. Then click on "Calculate CAGR" button to get the Compunded annual gain rate.