Go to the Yahoo Finance website, collect the monthly adjusted close prices of the the stock from 30/06/1990 to 01/07/2023 (If your stock was listed after 30/06/1990, use the maximum period available). You will initially use only data up to 30/06/2021 as you are constructing the portfolio based on your investment strategy as of 01/07/2021 and will update your investment monthly until 30/06/2023. Calculate the following values for each of your stocks up to 30/06/2021:

I. Monthly stock return.

II. Average annual return.

III. Monthly standard deviations.

IV. Average annual standard deviation.

The stock is XRO.AX (Xero Limited)