Call in the Cavalry - 2017

This OP is trying to measure volatility in what I think are investments: https://www.excelforum.com/excel-for...ml#post4732117 I don't know how volatility is measured by investors (I suggested a couple of resources suggesting standard deviation to measure volatility), but I am not sure about the suitability of this measure for his data. Anyone here know about investing and can comment?

Can someone help out a newb?

https://www.excelforum.com/excel-pro...his-macro.html