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Re: DDE and volume bug



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Allan:

I know there is some kind of problem with the volume and supercharts.

My work around with stocks is to get the difference between the total
volume 
between trades, eg   1,303,000 - 1,300,000 = 3,000  ,  the trade volume
will
show  500 for the last trade instead.  The trade volume per tick is
pretty 
useless to trade on.

Since I have been using this work around,  I have been able to see which
way 
the price is going.  I have been getting $1.00 per trade on 1,000 shares 
on klac intra day trading so far.

The best things I like about supercharts is the alarm lines and dde.

Does anyone know if there are lines I can put on a chart that is not an
alarm line?

Good trading to all.

Bob







Allan L. Kaminsky wrote:
> 
> The original posting was mine. The problem does not extend to futures
> data, since a futures tick may be any (unknown) size and/or group of
> transactions.
> 
> Stock transactions are reported differently from the futures. With
> stocks, each tick is (nominally) a single trade with the listed "last
> price", and for the number of shares represented by "Trade Volume."
> Omega has a bug in that volume that is reported on ticks is only the
> volume on "upticks". Downticks erroneously report a trade volume of
> zero. In easy language, the workaround is to use "upticks" and
> "downticks". However, the DDE link doesn't seem to allow any
> flexibility. It only reports the volume correctly if the tick is up.
> Thus, using the DDE link with Excel, as per the Server manual,
> incorrectly reports Trade Volume with live data.
> 
> The only workaround I've come up with is to follow the "live" data and
> when the time advances, go back and access the past minute as
> "historical data." This uses a different reporting scheme when the data
> compression is 1 minute; all the accumulated ticks during that minute
> have been collected in two categories: upticks & downticks; they are
> reported thusly.
> 
> Allan
> _____________________________________________
> 
> Tom wrote:
> >
> > Bob and list,
> > I have a few questions if I may ask regarding intraday Volume.
> > Could you explain the relation of upticks and downticks to volume. Since both an
> > uptick or downtick in price is representing a transaction of undetermined size
> > (could be 1 or 1000 contracts), how can it (up/dn tick count) represent volume
> > at all?
> > I trade futures and not stocks, so I may not have this correct regarding Shares
> > of stock trading, but would assume the same applies.
> >
> > Secondly, what occurrs when another tick price occurrs that is at the same price
> > as the former tick? Is it counted as an uptick or a downtick or are  =ticks
> > counted and differentiated from the former?
> >
> > What is the Volume bug? Or did you just describe it?
> >
> > Thanks in advance for any insights.
> > See U
> > Tom
> > planeacres@xxxxxxxxxxxxxxxx
> > What can you take with you when you're dead? That is the Question.
> >
> > -----Original Message-----
> > From: Robert Kodama <stocktrader@xxxxxxxxxxxxxxx>
> > Date: Friday, February 27, 1998 10:21 PM
> > Subject: DDE and volume bug
> >
> > >Allan:
> > >
> > >I dde into excel from supercharts 4.  I am using signal cable, p200 mmx,
> > >88 meg mem.
> > >
> > >I know the sum of uptick (443300) and downtick (562400) volume does not
> > >add up to the total end of day volume for today.
> > >
> > >For today 2-27-98 I got 618 ticks(trades) for klac with a total volume
> > >of 2,691,600 from signal cable and supercharts.
> > >
> > >According to this site: http://qs.secapl.com/cgi-bin/qs
> > >It got a total volume of  2,692,200 and 1851 trades.
> > >
> > >Doing any kind of volume study with 618 trades of 1851 total trades is
> > >pretty useless.
> > >
> > >I will be using bmi  and ensign software monday and signal and
> > >supercharts.
> > >
> > >I will try to see if I get the volume bug.
> > >
> > >Bob
> > >