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I download nightly from DD all 1500 S&P stocks + indexes + . The first thing
my stock screening program does is to check for unrecorded splits (30% +-
gap on average volume) and 10x volume (10 * average volume on less than 10%
change in high/low. Needless to say the program finds a number of errors
almost every night and flags the stocks not to be used. Around year-end I
sent DD a long list of unrecorded splits and a note asking why they didn't
implement the same kind of screening I use and never got an answer to the
question. I will say that they do eventually adjust my stocks for splits
automatically via my Omega downloader. Ditto for futures volume/openint.
Prior to using DD (about 18 months) I was a Telescan customer and my stock
screening program hit the same kinds of errors. Even more critical to me was
the lack of some very basic indexes which I require for my market work. For
example, I don't know how many times I asked TS to provide Nyse new highs
and lows and as late as a few weeks ago, when I rechecked their indexes,
they still don't carry it. I was never able to ascertain that TS handles
split adjustments automatically and I remember having to redownload futures
in order to get yesterday's volume/openint.
I'm spending around $60/month and I'm not a happy camper but there does not
seem to be one good supplier for everything. Neither Csi or Pinnacle carries
stocks although both seem to enjoy good reputations for futures. Worden
Brothers offers little of the way of raw index data and no futures although
the stock data appears to enjoy a good reputation. Some others seem to offer
cheap data but have no automatic mechanism for handling spits or the next
day's futures volume/openint.
Earl
-----Original Message-----
From: Bando57@xxxxxxx <Bando57@xxxxxxx>
To: realtraders@xxxxxxxxxxxxxx <realtraders@xxxxxxxxxxxxxx>
Date: Friday, February 06, 1998 4:41 AM
Subject: Fwd: FUTR: Data Quality
>Just want to add my frustration to the discussion on data....i have dial
data
>and over the last two days the futures have been a waste of time....i
download
>35 futures every day and a dozen on each of the last two days have been
right
>off the map......
>
>imagine my surprise when i saw tbonds march fell to 111.00 and cocoa march
>went to 705 and silver march went to 750....er...wait a minute silver
actually
>did go to 750...okay so they got one right...
>
>this is totally unacceptable...data is our lifeblood...whats the point of
>trading dependant on what your computer says if the data is incorrect....
>
>I will be calling dial data today..they dont seem to care...but i will give
it
>a try...
>
>will update the group on what DD said....
>
>i think by monday i will be able to update the group on what Telescan does
to
>open a new account..
>
>
>Frustratingly
>
>Rick
>
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