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Hi Marshall --
Beta measures the correlation between two data series. Remember
that there is a lag of one half of the number of bars used to
compute the beta statistic, the same lag as there would be for a
simple arithmetic moving average. Beta computed over a 500 bar
period (a little over two years of daily data) will have a lag of
250 bars. That is, it will indicate the beta as of about a year
ago. To illustrate the quickness with which short-lookback-period
beta changes, use daily data for the past 1000 days (about four
years) and compute and plot the beta between Ford (F) and General
Motors (GM) for beta periods from 10 days to 500 days.
Howard
--- In equismetastock@xxxxxxxxxxxxxxx, "marshall" <msmith3@xxxx>
wrote:
> anyone know the best place to find the most current Beta values
for
> stocks? Marshall
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