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Thanks Tomasz. That make sense. But does this mean that Amibroker's
Close price is the same as Yahoo's Adjusted Close (which adjusted
for split and dividends)? If so, then how does Amibroker treat day
high, day low, day open, and day close? For example, if I try to
calculate day close (C) - day high (H) in Amibroker, does this mean
the calculation is performed using adjusted Close on unadjusted day
high?
--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <amibroker@xxx>
wrote:
>
> Hello,
>
> Most possible reason is you did NOT download all history at once
today,
> but downloaded
> some months/years ago, then downloaded some later, then later then
later.
> Since then Yahoo may have added adjustments (for dividiends for
example)
> and this has changed HISTORICAL data on Yahoo.
> AmiBroker data stored in local database remained the same (because
you did not re-download
> entire history again).
>
> Suggestion: from time to time run FULL download to get adjustments.
> Once you do you will get perfect match.
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "tomsoyer_php" <tom.soyer@xxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Sunday, February 12, 2006 4:51 PM
> Subject: [amibroker] Amibroker vs. Yahoo Finance - different
historical stock prices
>
>
> > Hi,
> >
> > I am learning how to use Amibroker and in the process found that
the
> > historical stock prices for the stock symbol AA in the Amibroker
are
> > different from Yahoo Finance (see below). Does anyone have a
good
> > explanation for this?
> >
> > Thanks,
> >
> > Tom
> >
> > Amibroker Yahoo Yahoo
> > Close Close adj. close
> > 5/29/2003 23.78 24.03 22.74
> > 5/30/2003 24.36 24.61 23.28
> > 6/2/2003 25.04 25.3 23.94
> > 6/3/2003 24.81 25.07 23.72
> > 6/4/2003 25.71 25.98 24.58
> > 6/5/2003 25.58 25.84 24.45
> > 6/6/2003 25.66 25.93 24.53
> > 6/9/2003 25.24 25.5 24.13
> > 6/10/2003 25.68 25.95 24.55
> > 6/11/2003 25.81 26.08 24.68
> > 6/12/2003 25.87 26.14 24.73
> > 6/13/2003 25.32 25.58 24.2
> > 6/16/2003 26.01 26.28 24.86
> >
> >
> >
> >
> >
> >
> >
> >
> > 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 other support material please check also:
> > http://www.amibroker.com/support.html
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>
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