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Old 04-28-2008, 08:37 AM
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Re: Back Testing Intra-day Trades...

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Chad, which data source for I/RT has the most tick-by-tick historical data available? -fs
Unless something has changed recently, I believe you can get 8 days of tick data from IQFeed, and 50 from eSignal...although I think IQFeed provides much more 1-minute data (maybe 1.5 years vs 6 months for eSignal). I have heard some discussion that DTN will be expanding their tick limit in the near future, but I don't have the details.

If you really need years of tick data, there is a solution in tickdata.com. More information on pricing and how to pull tickdata.com data into IRT: http://www.linnsoft.com/tickdata/. You could purchase years of tickdata from tickdata.com, import that into IRT, and then continue to add another day each day from your realtime feed.

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