I'm going to show you something in project 1 and 2 the stock of how to figure out the value of your portfolio every week now this is going to involve some anchoring so i am going to show you how to use the function sumproduct s-u-m-p-r-o-d-u-c-t one word so right here we have the prices for, you purchased in this week here and then we have the prices here so down here in this particulur cell I'm going to go to f of x or you can go to formulas, either one and I'm going to go to f of x and I'm going to type in sumproduct 