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Strategies & Market Trends : TA-Quotes Plus
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To: Jim Snyder who wrote (8933)3/12/1999 8:00:00 AM
From: Nine_USA  Read Replies (1) of 11149
 
Jim,

I don't think the QP2 database lets you calculate
what a stock price might have been on any day of the last
2 years, for example.

I do analysis based on QP2 based on price, volume, and
fundamental data.

I find that price level is definately correlated to
subsequent performance and is an important variable
among the 60 or so I pay attention to.

In order to backtest based on data as it existed at the time
(and NOT as is is corrected to, or modified to) I output (each market day) a mini datafile of the variables I am interested in for about
6600 stocks. I then use a custom program to backtest
investment approaches against realistic history. To do
'backtesting' only on CURRENT QP2 information, would yield highly
distorted results.
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