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Hello Mike,
Thanks for your explanation on the occasional discrepancies on Yahoo's
closing prices; something I have observed at times and wondered about.
I too use TC2007 for EOD data and found to be quite accurate.
Mike
Mike wrote:
>
> Hi,
>
> I use a paid provider (TeleChart Gold, sometimes referred to as
> TC2000, TC2005, TC2007 - 29.99/mth $US provided by Worden Brothers
> http://www.worden.com/SoftwarePricing.aspx
> <http://www.worden.com/SoftwarePricing.aspx> ). It has two huge
> advantages going for it, that in my view have paid for itself many
> times over:
>
> 1) AmiBroker works directly against it's database! Just install it,
> then tell AmiBroker how to get to it (
> http://www.amibroker.com/guide/h_extsources.html
> <http://www.amibroker.com/guide/h_extsources.html> ) and never worry
> about your data again. AmiBroker will auto update since it keeps a
> pointer to the actual TC2007 database.
>
> 2) It provides the "true" end of day closing values *on the day they
> happen*. Many data providers, possibly Yahoo - worth checking into,
> will only show the closing value recorded within the strict trading
> hours of the main exchange.
>
> If a valid regular hours day transaction gets recorded a few minutes
> late, it will not show up as the end of day closing value on that day.
> But, the next day it will show up on the historical chart as having
> been the actual close (e.g. if occurs on Tues but recorded a few
> minutes late, some providers will *not* show it as the close for Tues,
> but on Wed they *will* show it as having been the close for Tues).
>
> I am not talking about extended hours trading here, I'm talking about
> regular hours end of day trading whose recording is delayed by a few
> minutes or some other cause. The phenomenon is real, I don't know the
> detailed reasons as to why. When I complained to Scottrade about it,
> they pointed out that the trade in question was recorded at 1 minute
> past close, so didn't count for their end of day data, even though
> they did show it as such the next day.
>
> This makes a big difference when your trading signals are based on
> closing price. It can literally be the difference between placing your
> exit order for the next day, or missing the signal until it's too
> late. Both Scottrade and Interactive Brokers suffer from this, and as
> a result, their charts are useless to me.
>
> Double check your close values against the following site for a while
> (free quote site, not a data provider
> http://stockcharts.com/index.html <http://stockcharts.com/index.html>
> ). Every once in a while you may
> find that the data you are getting from your service does not match
> with the one from the link above, but your service will show the
> corrected value the next day. In my experience, the stockcharts.com
> quote is always accurate on the day of the trade and is the same as
> what I get from TeleChart.
>
> Good luck.
>
> --- In amibroker@xxxxxxxxxxxxxxx <mailto:amibroker%40yahoogroups.com>,
> "Pete" <dryheat3@xxx> wrote:
> >
> > I would like to know what sources you all are using for US Stock
> > Market End-of-Day data. I have been using Yahoo Finance since it is
> > free. The problem I am having is Yahoo's end-of-day data is not
> > available until about 4 hours after market close. I need a source of
> > data that is available only a couple hours after market close. I
> > prefer not to have to pay for this data. But if that is my only
> option
> > then I would rather pay for the service then stay up late waiting for
> > the data.
> >
>
>
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