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If you want to understand what the trailing stop is doing, run the
test and click the plot on chart button. You'll see how the trailing
stop is screwing up the trades.
The systems tester is an Access application. It wasn't written by Equis.
You can read Roy's newsletter. It's a great education in how the
tester works. www.metastocktips.co.nz
Tom S wrote one article that provides information on his experiences
with it. It's in the file section.
There are work arounds for most of the problems. A lot of it is about
experience. Things like having to reset the ST-Data file aren't in the
manual. They've been posted on both boards before, you just have to
look them up.
--- In Metastockusers@xxxxxxxxxxxxxxx, "Scott & Lynda Mariani"
<mariani@xxxx> wrote:
> O.k.
> I would really like to know what the MS System Tester is doing (so I can
> replicate it!).
>
> With only Trailing Stops checked. Positions "long", Method "Percent",
> Parameters: "Profit/Risk" 0% and "Periods" set to 0.
>
> I get a 7692.92% return for 250 bars for a particular security.
>
> With no stops checked I get 180.80% return for the same 250 bars on
the same
> security. I can replicate the 180% in other programs but not the 7700%.
>
> Trying to figure out what " The trailing stop maintains a history of the
> best profit achieved on each bar using the high price for long
positions and
> the low price for shorts. When it has a history of the length
specified in
> the Periods field, it starts comparing the best profit in that
history to
> the worst profit achievable on the current bar. If it determines
that the
> difference between the highest historical profit in the trailing
period and
> the worst profit of the current bar is equal to or greater than the
Profit
> Risk field, it will exit the position." and
> "The stop attempts to exit at the price that would value the
position at the
> highest profit over the historical period less the trailing value.
If this
> value is not available, it will exit at the open."
> means in layman's terms".
>
> I understand that a lot of you guys are not too happy with MS in
this regard
> but I would just like to understand it better.
>
> Thanks, Scott
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