When I sell a stock, I'd like to capture its ROI at the point of sale, so that I have a permanent record of my various investments over time. However, once the stock is sold, FM tends to put "NA" in that data field.
I think in the past I have tried to make a note of ROI at the time of sale, but if I forget, and sell it, how can I recover its ROI from date of purchase to date of sale?