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When data is adjusted all data back to the first
day are adjusted (not just the date of the split at which you see a
gap). Unless your downloader recognizes splits, etc. and then overwrites
previously collected data (I don't know of any that do) it is necessary to
delete all data and download all of the adjusted data from the first
date.
Bill
----- Original Message -----
Sent: Wednesday, July 18, 2007 8:02
PM
Subject: [amibroker] IACI: Yahoo EOD Split not
adjusted? Aug 08-2005
>
All,
>
> I am not sure, but my impression is that yahoo EOD data is
split
> adjusted if you download it after the date when split should have
> happened. But actually, if you look at IACI data; there is a split on
> Aug-08th 2005, but it is not shown in data (i downloaded the data even
> today but that doesnt change it); data shows an opening gap. So my
> question is, is this usual? or am i doing something wrong?
>
> Aug 8th: Close 39.35
> Aug 9th: Open 27.8
>
>
> So, if this is usual then i guess yahoo data is atleast useless for
> backtesting. I hope that i am doing something wrong! (so that i can
> keep using FREE data).
>
> thanks
>
Chaitanya.
>
>
>
>
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Please note that this group is for discussion between users only.
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For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
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