Beta values?

Discussion in 'Stocks' started by TradeNYSE, Oct 28, 2007.

  1. How come the beta calculation on some sites are so far off???

    Ex. HZO
    Yahoo Finance 1.4
    CNBC 1.2
    Reuters 2.16
    Google 2.04
  2. Most likely the differences are due to:
    - sample size (e.g. 3 years, 5 years, 10 years etc.)
    - unit of analysis (e.g. daily or monthly returns)
    - frequency of updating (calculated yesterday or a week ago)
    - and perhaps the benchmark used (e.g. S&P500, Russell 2000 etc.)