Discussion Between Howard and User on IB Feed
and Differences

19:35 Acqua: question is, is it possible to access historic data prior to the current quarter knowing that IB uses the contract symbol of the quarter while esignal uses a generic symbol for the whole year?

19:35 @Ensign_H: acqua, you can download continuation files for daily from my web site so you have long term files like esignal

19:36 @Ensign_H: see web site help page, topic Data Library

19:36 Acqua: as far as the data I have collected so far using esignal - is it possible to convert it if I decide to go the IB route now?

19:37 @Ensign_H: all files you now have can be used with IB

19:37 Acqua: so, bottom line, I'll have access to all historic data (either my files or yours) if I change data feed provider from esignal to IB?

19:39 @Ensign_H: yes acqua, but there are differences

19:39 Acqua: what differences?

19:39 @Ensign_H: you can keep your eSignal account and just change data vendor selection to IB on Setup | Connection and give IB a try to see if you like it

19:40 @Ensign_H: IB does not send the same tick count as eSignal so that impacts constant tick charts and the tick refresh we have for IB is 1 day only, not 6 days like eSignal

19:41 Acqua: so, would the graphic display come different using either data feed?

19:41 @Ensign_H: graphic display is the same

19:42 Acqua: what would be the drawback with the minor tick count from IB?

19:42 @Ensign_H: only drawback is if you use constant tick charts having fewer ticks means you build bars more slowly. Some IB users compensate for that by using smaller count size for the bar. Esignal user might have 300 tick bar and IB equivalent is to use 200 tick count bar.

19:44 Acqua: ok

19:44 @Ensign_H: here is what we see is different...... esignal will send 3 ticks at an equal price with tick volumes of 10,3,2 - where as IB will send 1 tick a this price with equivalent volume of 15, so constant volume charts are the same, and price range charts are the same but constant tick bars will count 3 ticks for esignal feed and IB will count 1 tick

19:46 @Ensign_H: in comparison, esignal has the highest tick count per day, then DTN satellite = IQFeed, then IB is the least

19:46 Acqua: looks like IB is not a good option for the time being

19:46 @Ensign_H: do not know where qfeed.com fits into the spectrum

19:46 Acqua: I understand the concept, i'm just not very clear in the effect on the outcome on the chart itself

19:47 @Ensign_H: effect is the number of bars for a constant tick chart you collect per day.

19:47 Acqua: a 100 constant tick chart using esignal may have less volume than IB because of the "compressed" ticks?

19:47 @Ensign_H: no volume will be the same - volume is not lost

19:48 @Ensign_H: in my example for tick volume of 15, whether reported in 1 tick or as 3 ticks of 10,3,2 the volume is still 15

19:48 @Buffy2: many use the IB feed with great success - others have tried it and gone back to esignal or other feeds

19:49 Acqua: yeas, I think I understand the example, does it mean that one bar in the tick chart using esignal would have more volume than using IB?

19:50 @Ensign_H: no volume will be identical - tick count is what is differing

19:50 @Ensign_H: tick volume is all accounted for on both feeds

19:50 Acqua: constant tick means it will count lets say 100 tick to create one bar, correct?

19:50 @Ensign_H: yes - and that equivalent may be 60 tick count on the IB feed

19:51 Acqua: so using your example, using esignal, for building one bar i'm only missing 97 ticks while using IB I'm missing 99, correct?

19:52 @Ensign_H: I did not follow your example

19:53 Acqua: having a 100 tick chart - each bar is formed by 100 ticks

19:53 @Ensign_H: in my example 100 esignal ticks might have 2000 volume and 60 IB ticks covering same time period will have same 2000 volume

19:54 Acqua: ok, it's the same thing, I just didn't word it properly

19:54 @Ensign_H: ok think we understand each other on this difference in feeds

19:54 @Buffy2: night Howard thanks

19:55 MauiTerry: aloha Howard thanks

19:55 Acqua: if I want to try IB tomorrow, I know where to go to change the data feed, but fdo I have to do something else to use the historic data?

19:56 @Ensign_H: no, can use it right now - right mouse click and select refresh popup menu

19:56 Acqua: k, thanks a lot Howard

19:56 @Ensign_H: bye