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You're welcome.
It is very nice to receive a thankyou.
I probabaly won't follow the thread much longer as we can expect a %
of small errors and an occassional bigger one as per the testimonial
at another post .
All data has errors.
It is a matter of how many, what impact it has on our
investing/trading style and what methods we can use to compare data
sources for relative accuracy.
At the CSI website there is a copy of an article from Futures Mag
that talks about typical data errors.
It is about futures data but has some relevance to all traders.
Brian.
--- In amibroker@xxxxxxxxxxxxxxx, Ryan Daniel <macprogrammer@xxx>
wrote:
>
> Thanks for following through on this. I set up a
> Yahoo database in addition to my EODDATA database.
> I'll keep an eye on it to see if it stays accurate.
>
>
>
> --- "brian.z123" <brian.z123@xxx> wrote:
>
> > Yahoo data 101 - Appendix 1
> >
> > Ron,
> >
> > Thanks for your prompt reply.
> >
> > The purpose of my email was, out of fairness, to give your
company
> > the opportunity to present their position.
> > I think your answer does that.
> >
> > It will be posted on the website in the appropriate place.
> >
> > Regards,
> >
> > Brian B.
> >
> > Ron Franz <ron@xxx> wrote:
> >
> > Thank you for your email. I just verified that SEED history is
now
> > available on Yahoo.
> > Unfortunately I do not have a complete answer to your comment.
We
> > only supply the data to Yahoo they manipulate the data and are
> > responsible for there website. But this does happen when a
stock
> > symbol is changed sometimes and Yahoo has to manually correct
the
> > problem. So if you see this problem occur please let me know
and I
> > will forward it to Yahoo.
> > Thanks again,
> >
> >
> > CSI TECHNICAL SUPPORT wrote:
> >
> > -----Original Message-----
> > From: Brian.B [mailto:brian.z123@...]
> > Sent: Thursday, July 06, 2006 8:35 AM
> > To: support@xxx
> > Subject: Yahoo historical data
> >
> >
> > Dear Sir/Ms,
> >
> > I am a member of a forum that discusses stockmarket software
issues.
> >
> > Recently the accuracy of Yahoo historical data was questioned.
> >
> > A forum member came up with the example of SEED.
> >
> > The historical data for SEED was recently unavailable.
> >
> > The historical data at the site was current only to early June
as of
> > the beginning of July and attempts to download data returned
> > an 'unavailable' comment.
> >
> > I undertook to make enquiries on behalf of the group as to the
> > reasons for this and what procedures your company uses to ensure
> > Yahoo historical data accuracy.
> >
> > Regards,
> >
> > Brian Burney.
> >
> >
> >
> >
> > -----------------------------------------------------------------
----
> > -----------
> > Do you Yahoo!?
> > Yahoo! Music: Check out the gig guide for live music in your area
> >
> >
> >
> >
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "brian.z123" <brian.z123@>
> > wrote:
> > >
> > > Hello Ryan,
> > >
> > > Thanks for that.
> > >
> > > I agree there is an anomaly regarding SEED.
> > > I am still tracking that one down.
> > >
> > > Could you provide any further examples or comment.
> > >
> > > Part of the problem occurs when transporting symbol lists
across
> > > time and between databases e.g. the 'Helmscott files' are
dated
> > 2005.
> > >
> > > Nothing to do with the case of the strange SEED though.
> > >
> > > Brian.
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, Ryan Daniel <macprogrammer@>
> > > wrote:
> > > >
> > > > I am so glad you brought this up. I noticed that the
> > > > data that comes from Yahoo's historical (through AmiQuote)
> > > > is full of holes. See stock symbol SEED. Not sure about MSN.
> > > > I would consider registering AmiQuote if I knew the data
> > > > from one of it's sources was reliable. At any rate, I've been
> > > > updating by download each night from the free EODDATA
website.
> > > > So far their data has been rock solid, very clean, and
> > > > includes IPOs pretty quickly after they launch.
> > > >
> > > > Can anyone pipe in about this. Does the data get any better
> > > > once you register AmiQuote (I like AmiQuote and think it
> > > > works well. I realize that the problem is with the data
source
> > > > and not necessarily AmiQuote).
> > > >
> > > >
> > > >
> > > > --- matrix10014 <allansn@> wrote:
> > > >
> > > > > Hi all,
> > > > > Just setting up Ami,for the first time and was wondering
if
> > > there were
> > > > > any strong feelings regarding yahoo EOD vs Quotes plus??
> > > > >
> > > > > Any major benefits or drawbacks??
> > > > >
> > > > > Any insight appreciated
> > > > >
> > > > > Allan
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > > __________________________________________________
> > > > Do You Yahoo!?
> > > > Tired of spam? Yahoo! Mail has the best spam protection
around
> > > > http://mail.yahoo.com
> > > >
> > >
> >
> >
> >
> >
> >
> >
>
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
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