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Rick,
Gotcha!! Thanks for saying it twice. Some days my brain takes an
unscheduled vacation. Good trading.
Al Taglavore
----------
> From: Rick Mortellra <rmjapan@xxxxxxxxxxxxxxx>
> To: metastock@xxxxxxxxxxxxx
> Subject: Re: Back testing values
> Date: Tuesday, April 20, 1999 9:36 AM
>
>
> ----- Original Message -----
> From: Al Taglavore <altag@xxxxxxxxxx>
> To: <metastock@xxxxxxxxxxxxx>
> Sent: Tuesday, April 20, 1999 2:48 PM
> Subject: Re: Back testing values
>
>
> | Rick,
> |
> | ".......That said, your EOD data provider really should default to
> | reporting the
> | > close from the stock's primary exchange
> |
> | ===I checked with BigCharts, Yahoo, Bloomberg and they all reported the
> | "composite price". Only my broker Brown & Co. showed the correct
price.
>
>
> Now you've got me courious Al. I'll have to check into this with my
> individual stocks further. I trade mainly the SPY and DIA so I don't have
to
> worry much so I guess that's another solution!
>
> | But my original question is still unanswered. How much of this EOD
data
> is
> | different from the actual trading price and how do different traders
> handle
> | the testing of systems and development of systems when the data has
such
> | descrepencies.
>
> Thought I did Al with my SPY system example. But if your trading system
> signals are indicator dependent and the data tests in the Downloader
don't
> do the trick for you but you still want the verification automated, then
> you'll need to build a testing mechanism in Excel. It has a full set of
> features to handle this. If you are trading tick data, my advice is not
use
> a price dependent indicator for your exit unless you can run the your RT
> system in Excel and are proficient in Excel programming. Use a time limit
> for an exit as an example. For an EOD system, after you've gotten your
> entry, any errors that are missed shouldn't be a big trading concern so
long
> as you have your stop-loss or sell orders in place like any off-floor
trader
> should. Frees you from staring at quote screen too and you can have more
> trades on simultaneously to take advantage of any opportunity factor in
your
> system.
>
> Hope this was a better explanation.
> cheers,
> Rick
>
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