Telechart smoothed the data and the dividend, and the price change, does not show up. Now imagine you had a stop in place under DUG at 3%. In the backtest, you remain long the stock. In reality, you're stopped out. Very different results.
--- In [email protected], "booker_1324" <booker_1...@...> wrote: > > > droskill, > > I wish to address your statement on Telechart about "Major problem - the API > to access the data via AB doesn't adjust for splits or dividends. This > basically, from my point of view, makes it useless for backtesting." > > Telechart already has all of it's data adjusted so there is no need for AB to > adjust for splits or dividends. > > For example, take symbol DUG which is an ultra-short oil & gas fund. During > Q4 of 2008 this fund had a remarkable net income result due to investments > internal to the fund. On Dec 22 it was trading about $35, but after a $6 > dividend payout the next day it opened around $29, a massive change. You can > verify this by looking at historical charts at your favorite internet stock > quote site, many of which show unadjusted data. But Telechart data has been > backwards adjusted for this change, so the data is smooth all the way back in > time, and you won't see a big price change when a big payout occurs. It may > take a week or so for your fund data to be adjusted following a payout, but > they will get it done. Take a look at DUG in TeleChart at the end of > December 08, and you'll see no $6 gap down. > > On the contrary, I find Telechart data excellent and have used it for daily > backtesting for several years along with DTN IQfeed as a complement for > intraday data. > > --- In [email protected], "droskill" <droskill@> wrote: > > > > I've been spending a bit more time with Quotes Plus - pretty good data > > feed, but there are issues: > > > > - No lists of the stocks making up S&P500 or other key indices (they do > > have Nasdaq and NYSE). This means if you use the S&P, for instance, for > > looking % of stocks above a moving average, you're going to have to manage > > the lists yourself. > > - Has fundamentals - this is useful, and the data feed can be used with > > more fundamentally-oriented scanning software such as HGSI. > > - Has a ton of indices - gold/silver/oil, etc as well as put/call indices, > > etc. Premium may have the put/call as well - I'd have to take a look. > > > > On Premium Data: > > - Fantastic folder breakdown of industries and indices. So, running a scan > > over the stocks in the S&P 500 or the S&P 1500 is simple, and will not > > require maintenance from you. > > - Lacks some basic useful indices out of the box - like those mentioned > > above (oil/gold/etc). > > - No fundamental data. > > - Great ETF breakdowns into different categories. > > > > Telechart: > > - Includes access to their online stock tool freestockcharts.com > > - Includes fundamentals > > - Lots of indices and special, TC-only indices like T2106 etc. > > - Major problem - the API to access the data via AB doesn't adjust for > > splits or dividends. This basically, from my point of view, makes it > > useless for backtesting. > > > > That's what I've got right now - to me it's a toss up between Quotes Plus > > and Premium. > > > > --- In [email protected], "droskill" <droskill@> wrote: > > > > > > I think the only other vendor worth looking at is Quotes Plus - just my > > > opinion. Anybody have a comparison of the two that has experience with > > > both? From my limited experience, QuotesPlus has a bit more extensive > > > indices, but Premium has it on organization. > > > > > > --- In [email protected], "louies88" <Louies88@> wrote: > > > > > > > > > > > > > > > > --- In [email protected], "patsgreatdeals" <patsgreatdeals@> > > > > wrote: > > > > > > > > > > Is there a plugin for AMIBroker? for premiumdata.net? > > > > > > > > > They don't have a plugin in the truest sense, but they have a little > > > > program that you must install. It has all the necessary structure and > > > > very well integrated to Amibroker. Everyday you just update the data > > > > via this little program and...voila...they're updated in your AB > > > > database. > > > > > > > > Premiumdata.net is very extensive and very good, especially in the > > > > sector indices. If you're a top-down analyst, you'll like their sector > > > > index break down. It's very comprehensive. The update, by the way, is > > > > very very quick compared w/ Amiquote or any other service that relies > > > > on Yahoo data. > > > > > > > > > >
