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Re: [amibroker] Re: Yahoo RT Data



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----- Original Message -----
From: "brian_z111" <brian_z111@xxxxxxxxx>
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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To get support from AmiBroker please send an e-mail directly to
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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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