Does anyone know of a site that crowdsources due diligence for investments?
This is a very difficult undertaking since Securities Regulators in certain countries ( USA, Canada, and many others) do not allow anyone to profit by providing advice unless they are a registered broker dealer.
As each dealer does their own DD they do not share that information as others cannot rely on that undertaking.
Nothing steps the general public collecting data and sharing with no fees or advising
but if those are part of you getting the DD information then its breaching securities laws