Some brokers provide streaming data to active traders gratis. Bill
----- Original Message ----- From: "brian_z111" <[EMAIL PROTECTED]> To: <[email protected]> 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 [email protected], "Rakesh Sahgal" <[EMAIL PROTECTED]> > 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 <[EMAIL PROTECTED]> 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 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 > > > > > > -- > No virus found in this incoming message. > Checked by AVG. > Version: 7.5.519 / Virus Database: 269.22.0/1344 - Release Date: 3/26/2008 > 8:52 AM > >
