Darth - Agreed. I do it for my longer term investments. And i do include divi payments in my calcs
(Total Value Spent - (Total Value Sold + Total Divis paid)) / Current number of shares = Price needed per share that i currently hold to be in profit overall in this stock
The huge growth over the last 6 months will have made GGP too big a percentage of their portfolio. Nothing wrong with them moving those funds into a number of other nano caps