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Yup, that's what I'm saying. Yes, my 5-minute charts were crap. I
interpreted their large range as "volatility"--and spent a good bit of
time tweaking my systems trying to accomodate it.
I have been using TS4.
I have no idea what "caused" it. I can only say I was watching TS4's
System Tracking Control Center once day and noticed the prices moving
erratically--e.g.,
140^5 200
140^5 1000
139^8 500
140^4 1000
Not surprisingly, TradeStation kept whippsawing itself in and out of
positions. I got really suspicious when I was watching AT Financial's
Time-and-Sales window for the same stock, which uses an entirely
different datafeed (Comstock)-- and saw no such "139^8" trade occur-- but
was able to see it on the AT/Comstock tape exactly 20 minutes earlier.
In my case, in August '99 I had added the CME exchange to my BMI account
(which requires BMI's commodities/futures package--which includes, as it
turns out, delayed stocks, as well). But I believe I started noticing
the problems in December/January.
Ian
Gary Fritz wrote:
>
> > Here's why: A tick comes in and is saved in Server. 20 minutes
> > later the SAME tick comes in again (over the delayed feed), and is
> > again saved in Server. For some reason TS 4 Server (or the BMI
> > box?) doesn't deal with the time stamp appropriately. My charts
> > (and systems) just think its a new tick and display/issue orders on
> > that basis.
> >
> > Yikes.
>
> Yikes indeed. Are you saying you're receiving, storing, and
> displaying ALL ticks at realtime AND again 20mins later?? Your
> graphs must have looked like total garbage!
>
> Obviously this can't be happening to everyone. I don't see any such
> problem with my TS. What caused it to happen to your system? Was
> this TS4 or TS2k?
>
> Gary
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