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No. of Recommendations: 3
tommurphy9:
I suppose it all comes from Yahoo.

It all comes from Commodity Systems Inc. You can check which stocks CSI covers and how far back at https://apps.csidata.com/FactsheetListing.aspx . I see that they have data on WFC+L back to 2008. Thus I would suggest that you contact ron at csidata.com and ask why Yahoo! only shows historical data back to 2015 when their historical data goes back to 2008 (don't waste your time contacting Yahoo!).

CSI will also sometimes extend their own historical data for a symbol back on request.

Robbie Geary
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