reliable intraday historical data

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This product is designed for traders who wants to develop own trading system or/ back-test third party's one before use it on real market.
All data are cleaned errors spikes/gaps by experts.
Data formats : XPOASCII Metastock.
Intraday data for 11 currencies since 1997. EOD data since 1986.
Monthly updates.
Daily data are FREE of charge.

[rmanasa]

Greetings -

I've received different recommendations on data feeds would like to get the input of the forum on this matter. I'm looking to create a database of historical data for all the ps so I can back test some trading strategies systems.

Now there are two different types of "data" available out here - actual market prices something called indicative data. Actual market prices are what you'd expect - the actual O/H/L/C for each time increment of your chart. Indicative data seems to be a composite a variety of sources whether they be market makers brokers whatever. Wherever it comes it is not necessarily the actual tick-for-tick data that went through the FXCM Trading Station (or any other trading platform). While not exact it's offered as "close enough for jazz" seems to be a popular format.

I've gone back forth on this with many porfessionals beginners. Some feel strongly that you should only use real historical data I can underst that. On the other h others make a good point about granularity. For larger time frames defined as the hourly charts above an indicative feed is going to be very very close to the actual prices that had been traded at that time good enough for testing purposes. If you're day trading need tick level info then maybe the actual trading prices will give you more accurate information but for position or swing trading the difference between a set of actually traded prices a composite of prices reliable sources may not be significant.

Hoping for someone with experience in this matter but looking forward to all replies. Thanks!


Rick Manasa

[Truville]

Originally Posted by rmanasa

but for position or swing trading the difference between a set of actually traded prices a composite of prices reliable sources may not be significant.

I believe it is significant for one big reason: cles.

If you use indicative data the hourly cle may have a different shape to it than a cle using actual data. The difference between a doji a regular bar. The difference between engulfing not. The difference between buy sell.

In a market as difficult as this I don't think close enough is ever close enough.

[rmanasa]

Originally Posted by Truville

I believe it is significant for one big reason: cles.

If you use indicative data the hourly cle may have a different shape to it than a cle using actual data. The difference between a doji a regular bar. The difference between engulfing not. The difference between buy sell.

In a market as difficult as this I don't think close enough is ever close enough.

Thanks for the reply Truville. I appreciate the comments insight.

To give some more background I'm a relative newbie looking to practice developing systems strategies on free historical data before committing to a for fee data feed the costs involved with that. I haven't found any freely available actual data so it's indicative or nothing at this point.

Are there any freely (or cheaply) available actual feeds for testing purposes? If not is indicative data so inaccurate that I'd be foolish to test using it?

Looking forward to your reply. Thanks!