Hi Louis -- Here is the link to Quotes Plus. It lists prices for real time and for EOD data. (I wish they would drop the Dan Zanger commercial -- it does not do the reputation of their data business any good, IMO.)
http://quotes-plus.com/joomla/index.php Why do you want EOD data from two different vendors? There will be differences between them. And those differences will worry you -- your backtests will have different results -- which will you believe? How will you correct the differences? Remember, the purpose of your backtests is to increase your confidence that when you trade your system with real money, it is likely to be profitable. Why test using data that is known to be different than that that you will be using to trade? The data from all vendors has errors. Yahoo data is free, but has a higher error count than most of the vendors who charge for their service. The higher the error rate, the more time you will be spending fixing data errors. >From an ancient proverb (shortly after watches were invented): "A man with one watch knows the time, a man with two is not sure." Thanks, Howard On Thu, Mar 13, 2008 at 9:26 AM, Louis Préfontaine <[EMAIL PROTECTED]> wrote: > Hi Howard, > > I tried QuotePlus and really like the interface with all the sectors > clearly defined, etc. Is it affordable? > > Do you think my idea to keep independant DTN EOD and Yahoo EOD would be > good? I also have a backup on my laptop... > > Thanks, > > Louis > > 2008/3/13, Howard B <[EMAIL PROTECTED]>: > > > Hi Louis -- > > > > Although it might be possible to have a single database that has both > > intraday and end-of-day data, I recommend keeping the intraday and EOD data > > in separate databases. > > > > I use Quotes Plus for both EOD and IntraDay. I not only keep them in > > separate databases, I have them on separate computers and run a copy of > > AmiBroker on each computer -- one shows EOD data, the other Intraday data. > > > > My experience in trying to combine them has been spotty. Other members > > of the group may have better experience. > > > > Thanks, > > Howard > > > > > > On Thu, Mar 13, 2008 at 9:17 AM, Louis Préfontaine <[EMAIL PROTECTED]> > > wrote: > > > > > Hi, > > > > > > I fear I may ask a dumb question, but I don't really understand how to > > > get the historical quotes from Yahoo for all the quotes on NYSE and > > > NASDAQ... I looked at > > > http://www.amibroker.org/userkb/2007/11/09/setup-a-custom-database-nasdaq/ > > > but it is still not too clear for me... > > > > > > To Howard: at long term I will use DTN, but DTN is 100$+/month with > > > canadian quotes, so it is somewhow expensive for now... And I think that > > > the EOD data should be quite the same... I'm still figuring how I can > > > integrate intraday-EOD data in the same interface, so right now I have an > > > EOD database with DTN and an intraday database with DTN. I would only > > > add a > > > Yahoo EOD database to the whole thing. > > > > > > Thanks! > > > > > > Louis > > > > > > 2008/3/13, brian_z111 <[EMAIL PROTECTED]>: > > > > > > > > Are the yahoo history quotes free and reliable for backtesting? > > > > > > > > Yes, it is free, and deep histories too. > > > > > > > > This is a contentious subject (AB users disagree on this point). > > > > > > > > Some of use it for backtesting and some do use it for trading. > > > > > > > > Personal choice. > > > > > > > > I have posted on the pros and cons at the UKB >> data >> Yahoo > > > > > > > > The best thing is to be informed from there and make your own > > > > decision. > > > > > > > > It is definitely good enough to start out (for EOD trading) - when > > > > you start to get a couple of good systems then you can repeat the > > > > tests on other data (purchased?) and see if you get any difference. > > > > > > > > The main point is that Yahoo can be raw or dividend adjusted (it > > > > makes a difference) - I also have tried to discuss this at the UKB > > > > (not finished yet). > > > > > > > > brian_z > > > > > > > > --- In [email protected] <amibroker%40yahoogroups.com>, > > > > "Louis Préfontaine" > > > > <[EMAIL PROTECTED]> wrote: > > > > > > > > > > Hi Brian, > > > > > > > > > > Are the yahoo history quotes free and reliable for backtesting? > > > > > > > > > > You are right: for NASDAQ and NYSE the tickers are the same for > > > > DTN. So I > > > > > guess your way could work? > > > > > > > > > > I will try to work with this tomorrow or this week-end and will > > > > get > > > > back to > > > > > you with this. > > > > > > > > > > Thanks! > > > > > > > > > > Louis > > > > > > > > > > 2008/3/13, brian_z111 <[EMAIL PROTECTED]>: > > > > > > > > > > > > Sorry, > > > > > > > > > > > > An incorrect assumption on my part. > > > > > > I don't know anything about DTN. > > > > > > Usually the tickers are the same except for indices. > > > > > > > > > > > > Someone else can probably help with DTN - apologies for wasting > > > > your > > > > > > time. > > > > > > > > > > > > Yes, Yahoo definitely works - simple import and also with the > > > > setup > > > > > > methods I use there. > > > > > > > > > > > > A lot of people don't like Yahoo data though. > > > > > > I use it for backtesting but not live. > > > > > > > > > > > > brian_z > > > > > > > > > > > > --- In [email protected] > > > > > > <amibroker%40yahoogroups.com><amibroker% > > > > 40yahoogroups.com>, "Louis > > > > > > Préfontaine" > > > > > > <rockprog80@> wrote: > > > > > > > > > > > > > > Hi Brian, > > > > > > > > > > > > > > Thanks for your reply. > > > > > > > > > > > > > > I see that the quotes used come from yahoo... However I use > > > > data > > > > > > from DTN, > > > > > > > so the ticker name should be different. So even if I can > > > > download > > > > > > every > > > > > > > tickers from yahoo, I would have to manually change the ticker > > > > > > > > name > > > > > > so it > > > > > > > can upload automatically. Is there a way to avoid this? > > > > > > > > > > > > > > Also, are you sure it is possible to get the quotes from > > > > yahoo? > > > > I > > > > > > remember > > > > > > > I tried some times ago and wasn't able to do it. > > > > > > > > > > > > > > Thanks, > > > > > > > > > > > > > > Louis > > > > > > > > > > > > > > 2008/3/13, brian_z111 <brian_z111@>: > > > > > > > > > > > > > > > > Hello Louis, > > > > > > > > > > > > > > > > > > > > > > > > > Is there a way to download a LOT of tickers,e.g. every > > > > tickers > > > > > > on > > > > > > > > >the > > > > > > > > > NASDAQ, or DJI? Do I have to manually enter each tickers > > > > after > > > > > > the > > > > > > > > >other or > > > > > > > > > > > > > > > > > is there a faster and simplier way? > > > > > > > > > > > > > > > > Yes, there is. > > > > > > > > > > > > > > > > There are some posts at the UKB that walk you through the > > > > basics. > > > > > > > > > > > > > > > > Setup A Custom Database is the main one. > > > > > > > > > > > > > > > > It shows you how to get ticker lists and how to use them in > > > > AB. > > > > > > > > > > > > > > > > http://www.amibroker.org/userkb/ > > > > > > > > > > > > > > > > Look under DataBase Management. > > > > > > > > > > > > > > > > brian_z > > > > > > > > > > > > > > > > --- In > > > > > > > > [email protected]<amibroker%40yahoogroups.com><amibroker% > > > > 40yahoogroups.com><amibroker% > > > > > > 40yahoogroups.com>, "Louis > > > > > > > > Préfontaine" > > > > > > > > <rockprog80@> wrote: > > > > > > > > > > > > > > > > > > Hi, > > > > > > > > > > > > > > > > > > Is there a way to download a LOT of tickers,e.g. every > > > > tickers > > > > > > on > > > > > > > > the > > > > > > > > > NASDAQ, or DJI? Do I have to manually enter each tickers > > > > after > > > > > > the > > > > > > > > other or > > > > > > > > > is there a faster and simplier way? > > > > > > > > > > > > > > > > > > Thanks, > > > > > > > > > > > > > > > > > > Louis > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
