I would like to make a duplicate of my main folio. This will allow me to delete old share purchases so I could (for example) follow just the new share purchases I made in 2017. Alternatively I could follow just the share purchases I made using a new strategy.
Thanks In advance for your help.
Nick
One way to more or less do what you like is to use google spreadsheets.
I have one of those which combines the holdings from several broking accounts into one spreadsheet for tracking purposes. It also allows me to categorize investments.
Here's an example, although not the best layout:
https://chrisreining.com/using-google-spreadsheet-to-track-a-stock-portfolio/