I have a premium Morningstar subscription. It provides a wealth of information and is mostly enough for my information needs.
I'm able to create portfolios and watchlists, and watch their performance since the time I created the portfolio or watchlist.
But it doesn't seem to be possible to view historical performance of a portfolio or watchlist. I can view the historical performance of an individual security or performance of a portfolio/watchlist since I created it, but not the historical performance of a portfolio/watchlist.
Is there any resource that allows you to view the historical performance of a portfolio? That would be great for seeing how it, as a whole, performed during different market conditions, and whether you need to make any changes to the portfolio of securities before you buy it.