IB is a good source, but IB data is unadjusted. Adjusted M1 data is normally not free. It's available from providers like IQFeed, or from us. For an asset list, enter the list name instead of the symbol in the download script panel.
https://zorro-project.com/manual/en/ib.htmhttps://zorro-project.com/manual/en/history.htm And I'm afraid letting Zorro deal with renamed symbols and survivorship bias is up to you. Software only does what you tell it to do.
