Offer your thoughts or opinion on the input financial query or topic using your financial background.

Who owned my shares before me?
Shares do not themselves carry any identity. Official shareholders are kept at the registrar.  In the UK, this may be kept up to date and publicly accessible.  In the US, it is not, but this doesn't matter because most shares are held "in street name". For a fully detailed history, one would need access to all exchange records, brokerage records, and any trades transacted off exchange. These records are almost totally unavailable.