|
PureBytes Links
Trading Reference Links
|
> Several years ago, someone claimed that CSI retained the data for
> these dead companies in their database
they still advertise a delisted stocks database as an optional extra
(at a price)
brian_z
--- In amibroker@xxxxxxxxxxxxxxx, "Phsst" <phsst@xxx> wrote:
>
> I've been with QP EOD for many years now and after looking at
several
> other data suppliers, I would not change.
>
> The data integrity is very good. The AB interface is fast.
>
> There is a caveat that everybody should be aware of however:
>
> Back at the top of the dot com bubble, QP had over 10K common stocks
> in the database. Now there are just over 5500 common stocks in the
> database. So as companies come and go, QP drops them from the
database.
>
> Why is this an issue you might ask...
>
> Removing dead issues from the database results in a psuedo "looking
> forward" aspect to your backtesting results. In other words, if
failed
> companies are removed from your database by the nice folks at QP,
then
> you are being deprived of seeing how your backtested systems would
> have been affected using the data from those failed stocks.
>
> Several years ago, someone claimed that CSI retained the data for
> these dead companies in their database, but over the years I've
looked
> at CSI and have been disappointed at their charges while not being
> convinced about the exact nature of the data they supply.
>
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Howard B" <howardbandy@> wrote:
> >
> > Greetings all --
> >
> > Let me add my voice to those suggesting that you reconsider
leaving
> Quotes
> > Plus.
> >
> > I am a subscriber to QP for both EOD and RealTime.
> >
> > I have had difficulties with QP's billing department. Gary got
them
> > straightened out for me.
> >
> > I am satisfied with the quality of the data.
> >
> > Consistency is worth a lot. Most of my research and most of my
> trading is
> > done based on systems that I have developed using QP data. If I
were to
> > change to another vendor, I would begin to notice differences.
That
> would
> > concern me, and I would spend way too much time deciding whether I
> needed to
> > be worried or not. In the end, my choices would be to redo a
great
> deal of
> > research, or go back to QP to resolve the differences.
> >
> > Thanks,
> > Howard
>
Please note that this group is for discussion between users only.
To get support from AmiBroker please send an e-mail directly to
SUPPORT {at} amibroker.com
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
For other support material please check also:
http://www.amibroker.com/support.html
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/amibroker/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:amibroker-digest@xxxxxxxxxxxxxxx
mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|