[EquisMetaStock Group] measuring performance for a specific period

["its_greek_too_me" <gzigmond@xxxxxxxxxxxxx>]

What is the easiest way to run an exploration on performance for a 
specific period?  For example, if I want to rank performance on all 
S&P 500 members from 3/1/05 - 3/15/05.  Would I use the ROC function 
with fixed start and end dates?  

Thanks

_Gary








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