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Bill
----- Original Message -----
Sent: Friday, March 28, 2008 9:58
PM
Subject: [amibroker] Re: Yahoo RT
Data
>
100% agree with you there. > I am not suggesting it for intraday trading
i.e. tick trading etc. > I am just documenting the facts. > (anyone
who can afford a 50K plus account to trade futures can afford > the data
to match and they all do - to a man and woman). > > For my own
opinion I think it has some uses: > > - I know an EOD trader who
screens during the day, using YahooCurrent > delayed, to get a short list
of stocks for his use at the close so > for traders who want to do that
(in the US) non-delayed is actually > an improvement. > > -
new traders who are nervous about intraday data could use YahooRT > as a
cheap primer (very easy to use if Tomasz did something to make > it
available via AQ with more frequent refreshes) > > - assuming Yahoo
RT is reasonably accurate then the minimum snapshot > (2secs) does not
introduce significant errors into, say 15 min OHLC > bars >
> - it could be used for an estimate of spreads (bid/ask is hard to
> come by data) used for this purpose IMO it would be a close >
approximation to the real world. > > - since it comprises the
underlying data for 'normal' Yahoo data then > it would make a great
'training' database for people who want to > compare intraday movements
to EOD OHLC. > > - daily files can be saved as ASCII or Metastock
format to build up a > static historical intraday database (they have
their uses). > > - anyone who is not used to intraday data can take
a trial, or a > cheap one month subscription, and use that to try some of
AB's > intraday feaures/ASCII importation of tick data etc before taking
the > plunge with AB Pro and paid RT subscriptions. > > As
always, very few traders will start from scratch and become >
consistently successful in the first two years so why pay out good >
money for data they actually have no hope of using in anger (might as >
well make all of our early mistakes on free/cheap data). > > Not
entirely a lame duck? > > Anyway, as we have pointed out
before. > The only data that counts is the data at our brokers -
everything > that comes before that is an approximation. > >
brian_z > > > > --- In amibroker@xxxxxxxxxxxxxxx,
"Rakesh Sahgal" <rakeshsahgal@xxx> > wrote: >> >>
Brian >> >> I have done these exercises too in the past. The
only conclusion I > could >> draw from this was that for a
futures trader putting real dollars > on the >> line in a intra
day trading environment a RT data service is a MUST > HAVE >>
(caps for added emphasis). These Yahoo Finance based workarounds > are
just >> that workarounds, with a very high probability they will fail
at a > critical >> juncture when you need them the
most. >> >> >> Rakesh >> On Sat, Mar 29,
2008 at 6:11 AM, brian_z111 <brian_z111@xxx> wrote: >>
>> > Re: Yahoo RT data (referring to the major US markets
only). >> > >> > I received the following comments, on
the subject, from AB > support: >> > >> > Yahoo
so called "real time" is the same as ordinary Yahoo quotes, >> >
with one difference: there is no 15 minute delay. >> > These are
just snapshot (current) quotes, so any data collected >> > represent
situation "at the time of request". >> > No backfill, no true
historical interval bars (except of course >> > daily)
etc. >> > AmiQuote as it is now, fully allows to get the current
quote > in "real >> > time" (i.e. almost no delay) using
"Yahoo Current". >> > To do so you need to do two steps: >>
> >> > 1. login on Yahoo Finance site using Internet
explorer. >> > 2. In AmiQuote, go to Tools->Settings and check
"Allow cookies" > box. >> > >> > Thanks to
support for their answer. >> > >> > FTR. >>
> >> > I did some checking of my own using RTQDownloader
from >> > http://www.trading-tools.com/
(uncrippled trial version). >> > >> > - Yahoo advertise
MarketTracker RT as tick charts >> > - in Yahoo RT I can view charts
down to 1 hour charts with 1 > minute >> > OHLC
bars >> > - in the MT status bar Yahoo report what appears to be
tick > direction >> > for the last 6 ticks i.e. up, down or
equal (I'm not certain about >> > this as they don't have a true
help manual). >> > - Yahoo does say that it is the same data,
'normally' available >> > except that is not delayed. As far as I
can tell it is directly > from >> > the exchanges (presumably
Yahoo take it as tick data but what > happens >> > to it
after that is unknown) >> > >> > Using RTQDownloader I
achieved the following (for Dow > consituents): >>
> >> > - downloaded price, vol, bid/ask in ASCII (text files)
with 2 sec >> > snapshots (one file per symbol) >> > -
downloaded price,bid/ask,vol in Metastock format and imported >> >
it 'live' into AmiBoker using the AB Metastock Plugin (configured >
to >> > auto refresh) - on refresh the plugin appeared to pull in
> the 'back >> > history' from the Metastock directory (every
bar every time?) - 4 > sec >> > snapshots. >> > -
data was timestamped HHMMSS >> > >> > The bid/ask was in
the H,L fields. >> > >> > I am not commenting on the
suitability of the data for trading or > the >> > quality -
the same applies to RTQDownloader. >> > >> > I only did
a quick test and didn't cross check it against RT data >> > from
other sources - I just wanted to find out what the limit was >
to >> > their data (I didn't prove if tick data is on their server -
only >> > that it appears to be there timestamped in
seconds). >> > >> > I am unlikely to do any more with
this issue. >> > >> > brian_z >>
> >> > >> > >> >
------------------------------------ >> > >> > 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 >> > >>
> >> > >> > >> > > >
> ------------------------------------ > > Please note that
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amibroker.com > > For NEW RELEASE ANNOUNCEMENTS and other news
always check DEVLOG: > http://www.amibroker.com/devlog/ > > For other support material please check also: >
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>
__._,_.___
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
__,_._,___
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