Answered By: Bobray Bordelon
Last Updated: Jun 30, 2023     Views: 53

Betas are the result of a linear regression where the stock prices are compared to a relevant index.  Depending upon the study being done the time table should match the time of the study. 

For historical data - 
  • Older betas are in Value Line.
    • 1968-1983 in Firestone stacks (F) HG4501.V26.
    • 1982-1987 in (RECAP) MICROFILM S00693.
    • 1997-2008 (Expanded) in (RECAP) MICROFICHE 1817
    • 1987-2008 is on (RECAP) Microfiche 1065.


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