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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
>> >
>>
>
>> >
>> >
>>
>
>
>
> ------------------------------------
>
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>
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>
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>
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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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