ParkTwain's Gains Analysis ...
ParkTwain,
Thanks for the insightful analysis. Here is Yahoo's definition of STOCK BETA:
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Beta
The measure of a fund's or a stock's risk in relation to the market or to an alternative benchmark. A beta of 1.5 means that a stock's excess return is expected to move 1.5 times the market excess returns. E.g., if market excess return is 10%, then we expect, on average, the stock return to be 15%. Beta is referred to as an index of the systematic risk due to general market conditions that cannot be diversified away.
Beta equation (security)
The market beta of a security is determined as follows: Regress excess returns of stock y on excess returns of the market. The slope coefficient is beta. Define n as number of observation numbers. Beta =
[(n) (sum of [xy]) ]-[ (sum of x) (sum of y)]/
[(n) (sum of [xx]) ]-[ (sum of x) (sum of x)]
where: n = # of observations (usually 36 to 60 months)
x = rate of return for the S&P 500 index
y = rate of return for the security
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So Yahoo is looking at 3-5 year beta, which looks too stretched (even though your beta correlation is very high for short term gains.) Perhaps a 12-month beta might yield higher correlation, and then your method will get closer to MrMarket's who uses 12-month RSQ (basically a beta on the stock itself, as opposed to a comparison with the market.)
Also, Yahoo's definition is for an S&P500 market benchmark, so beta with a NASDAQ or NYSE base might reveal even more significance. NASDAQ certainly diverges more from S&P500.
But for now, the method you have seems pretty good anyway.
I also noted that www.moneycentral.com has both 5-year and 52-week highs listed. So why go to barcharts?
Regards,
siliconhippy
ParkTwain,
Thanks for the insightful analysis. Here is Yahoo's definition of STOCK BETA:
-------------------------------------------------------------------------
Beta
The measure of a fund's or a stock's risk in relation to the market or to an alternative benchmark. A beta of 1.5 means that a stock's excess return is expected to move 1.5 times the market excess returns. E.g., if market excess return is 10%, then we expect, on average, the stock return to be 15%. Beta is referred to as an index of the systematic risk due to general market conditions that cannot be diversified away.
Beta equation (security)
The market beta of a security is determined as follows: Regress excess returns of stock y on excess returns of the market. The slope coefficient is beta. Define n as number of observation numbers. Beta =
[(n) (sum of [xy]) ]-[ (sum of x) (sum of y)]/
[(n) (sum of [xx]) ]-[ (sum of x) (sum of x)]
where: n = # of observations (usually 36 to 60 months)
x = rate of return for the S&P 500 index
y = rate of return for the security
----------------------------------------------------------------
So Yahoo is looking at 3-5 year beta, which looks too stretched (even though your beta correlation is very high for short term gains.) Perhaps a 12-month beta might yield higher correlation, and then your method will get closer to MrMarket's who uses 12-month RSQ (basically a beta on the stock itself, as opposed to a comparison with the market.)
Also, Yahoo's definition is for an S&P500 market benchmark, so beta with a NASDAQ or NYSE base might reveal even more significance. NASDAQ certainly diverges more from S&P500.
But for now, the method you have seems pretty good anyway.
I also noted that www.moneycentral.com has both 5-year and 52-week highs listed. So why go to barcharts?
Regards,

siliconhippy
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