Answered By: Barbara Coffey
Last Updated: Sep 30, 2019     Views: 39

Betas are the result of a 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.

Use Bloomberg – Ticker <Equity> Beta then adjust to match your analysis needs. The r^2 shows how good a fit the Beta fits the data beta by sector – from NYU

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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