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Re: CME Tick Aggregation



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RE: My 'tick charts'-- 600 & 1200, on both the ES #F, and NQ #F (DBC Esignal
feeds)
My 1200 tick, usually about 40- ish bars in a day now has about 15 bars
My 600 tick, usually around 100- ish bars in a day, now showing about 20
bars (just approximate- eyeballing with this old dog's +200 readers..)
Needless to say, indicators/systems on my "tick" charts aren't LOOKING like
they used to.
lack of bars + lack of signals = lack of detection???
I cannot tell if it is because of "low volume" of the Holidays,
or the CME Tick Aggregation.
But I'll wager the latter.
Anybody else with some feedback?

Wishes to all for a good year-
Marc Miller

----- Original Message ----- 
From: "Phil Bailey" <baileyp@xxxxxxxxxxx>
To: "'Abhijit Dey'" <omegalist@xxxxxxxxxx>; "'Omega List'"
<omega-list@xxxxxxxxxx>
Sent: Tuesday, December 20, 2005 1:42 PM
Subject: RE: CME Tick Aggregation


> Abhijit,
>
> Nice snap shot analysis. For ES, its about cut in half, easy.
> But it is a variable determined by market makers who control the
efficiency
> by basket size.
>
> Its kind of like a stealth. You don't hear or get any feedback from market
> and then its gone.
> If I didn't have 4 index quotes flashing, I couldn't tell if the market
was
> going even with 4 screens of charts.
> Feedback is a distraction though. It is real efficent now anyway, but it's
> the holidays too.
>
> Its a good opportunity to clean charts up. But it will take some history
to
> mesh these
> Charts with the old for a confident indicator comparison, but it looks
good
> so far.
> I guess ES was getting way beyond most of the Financial communities
hardware
> capabilities, cheap #$%&*'s.
>
> And IB has less tick quantity 'variance' but they are getting data from
CME
> as well.
> So in effect they will still be average (~).125 seconds delayed after the
> large packets hit from CME.
> Instead of the average 'contract tics' delayed, it will now be the average
> 'largest size contract packets' delayed.
> So as far as 'error' of efficiency (timeliness and not tick counts), they
> should theoretically be less efficient
> with the sum of variances (CME delay + IB delay) indicating greater delay
> {error}.
> They should have lost most all of the initial IB quote system advantage
for
> the customer (supposed hardware efficiency),
> but IB company scalpers may take home bigger paychecks now.
>
>
> Thanks,
> Phil
>
> > -----Original Message-----
> > From: Abhijit Dey [mailto:omegalist@xxxxxxxxxx]
> > Sent: Monday, December 19, 2005 5:45 PM
> > To: Omega List
> > Subject: Re: CME Tick Aggregation
> >
> > Number of bars
> >
> >            12/16 TS8    12/16 IB    ratio    12/19 TS8
> > 12/19 IB    ratio
> > ES  500t   144          42          0.29     83           43
> >         0.52
> > ER2 300t   136          49          0.36     131          55
> >         0.42
> > EMD 100t   120          51          0.43     105          55
> >         0.52
> >
> > 1) We IB data people now have "less error"   ; )
> > 2) High volume contracts are affected more, which makes
> > sense. The trades that get aggregated is one big lot hitting
> > many smaller lots.
> > That obviously happens more in ES. In something like EMD,
> > it's more of small fry's small lot maching another small
> > fry's small lot on the other side, so the drop in data volume
> > would be less.
> >
> > Now, we are dealing with too many moving targets; rounding
> > errors; no idea how IB's volume is affected. So the
> > observation #2 above is kinda
> > iffy. But observation #1 is good   ; )
> >
> > Abhijit
> >
> > PS :
> > someone want to redo this with eSig data?
> > thanks to SVE for the TS8 data
> >
>