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John, thank you very much for this detailed reply.
Herman, if you are reading, thank you for your reply as well.
-Steve
--- In amibroker@xxxxxxxxxxxxxxx, "john.harmon97" <john.harmon97@xxx>
wrote:
>
> I have been comparing Quotes Plus Data with Norgate's Premium Data and
> have found the following:
>
> > - Accuracy of the quote data
> > - Quick resolution of inaccuracies
>
> Both seem very good in this regard.
>
> Norgate Premium Data covers OTC stocks - QP does not, which means
> certain securities such as Foster Wheeler which was an OTC stock for a
> couple of years before returning to a normal listing has limited
history.
>
> Also, the Premium Data coverage of index data is crazy... looks like
> about 900 indexes covered, and they are also organized into about 40
> groups so you can find what you want quickly.
>
> > - Ease of use during initial database setup
>
> Both work fine.
>
> > - Ease of use during daily download
>
> Easy on both sides.
>
> > - Server reliability and responsiveness
>
> No problems - QP seemed to take longer to process updates though but
> this should not be an issue for end of day data.
>
> > - Any periodic maintenance required
>
> Premium Data requires you to run a script within AmiBroker
> periodically to pick up new symbols/symbol changes. The QP plugin
> requires you to periodically click Database settings - retrieve
> symbols. However, QP doesn't remove the delisted/old symbols.
>
> For example earlier this week New Generation Biofuels moved from AMEX
> (GNB) to NASDAQ (NGBF) - the old entry for GNB still remains within AB
> with QP, but is removed by Norgate when you run the maintenance script.
>
> > - Ability to determine which stocks are optionable
>
> Premium Data has a watchlist for those stocks which have options that
> trade on CBOE.
> I couldn't find any such feature on QP.
>
> > - Adjustments for splits and dividends
>
> Both adjust for splits. Neither adjust for dividends (which is what I
> want)
>
> > - Ability to determine the true historical price a stock actually
>
> Norgate Premium Data holds the original closing price in the otherwise
> unused Open Interest field.
> For QP, you can only have either the adjusted closing price or the raw
> price - you can't have them both simultaneously.
>
> > - Availability of historical data for delisted stocks
>
> Premium Data also covers delisted securities (for an additional fee)
> which is great when doing backtesting. My short-side trading system
> backtest results changed dramatically when I added delisted securities.
>
> On the commodities side, Norgate's futures data is a lot better - well
> organized within AB, you can chart the individual deliveries (with QP
> you can only chart continuous charts) and they also populate the
> fields for margin size, tick size, point value etc. which are required
> for backtesting)
>
> Both are great solutions but I think Premium Data is superior in
> several important areas.
>
> They both offer a trial - grab them both and see for yourself.
>
> john
>
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