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Larry,
First, I do want to say that my intent was to simply answer
the question that Heidi was asking. I don't know how she'll
use these screens or explorations, nor do I know if a good
trading system can be built based on just this--I haven't
backtested or worked with any of the signals. Certainly,
the close crossing up over the Parabolic SAR is indicative
of a change in trend. She may be using that as a setup or a
confirmation of some other information or indicators or tens
of other uses...and the five days since the close crossed
down on the Parabolic SAR might just be used to create a
watch list from some prescreened group of stocks.
But, in answer to your question:
I'd just set up a new exploration called "PSAR" for
example... I'd name Column A something like "C_DN" and add
the formula into the large blank area, then Column B would
be named something like "UP_SIG" and the second formula goes
there. Any additional columns you might add some
information like Closing price or volume, so that you can
get a gauge on the type of trading that the stock falls
into.
When you get your results, just sort the columns
individually for a "1", as those are the signals saying that
your formula is true, or in other words has triggered. You
can save those results into a list, or copy those securities
into another folder for further study or explorations, or do
explorations based directly on those results.
Dave Nadeau
Larry wrote:
> Thank you for posting the concept of an SAR exploration.
> Would you please post the complete exploration i.e. what
> columns to put what formulae etc. ?
>
> Jim wrote:
>
>> looks like it works just fine...i got adbe and syy from
>> the sp500..both up today......
>>
>>
>> At 11:57 AM 9/20/00 -0700, you wrote:
>>
>> > Heidi,
>> >
>> > I don't know if you've gotten any replies off line on
>> > this one, but here's one way to do it:
>> >
>> > To screen for your conditions, you have to create a new
>> > exploration. In one of the columns of the explorer,
>> > you would place the following in the dialogue box
>> >
>> > XDN:=SAR(0.02,0.2)>C;
>> > Cross(Sum(XDN,4)=4, 0.5)
>> >
>> > I've used a "sum()" function to make sure that I don't
>> > capture situations where the Parabolic SAR flipped five
>> > days ago, but within the following four days flipped
>> > back. The 4 in the second line suggests that the
>> > closing price has been below the Parabolic SAR for 4
>> > days; you can change these two 4's to any number you
>> > prefer.
>> >
>> > For a stock that's just changed to a close above the
>> > Parabolic SAR use
>> >
>> > CROSS(CLOSE, SAR(0.02, 0.20))
>> >
>> > in another column when you build your exploration. I
>> > haven't had a chance to test these out yet, but that's
>> > the gist of what you would use.
>> >
>> > Dave Nadeau
>> >
>> > Heidi Stubner wrote:
>> >
>> >> Please assist me in building a formula:
>> >>
>> >> How could I screen stocks that were above the
>> >> Parabolic SAR 5 days ago, and
>> >> now have fallen below?
>> >>
>> >> Also, stocks which just became a buy by trading above
>> >> the SAR today
>> >> (previous day it traded below).
>> >>
>> >> Thanks so much.
>> >
>>
>> Jim...
>> Atlanta, GA
>
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