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Here is exact link from Interactive Brokers site
that lists current limitations:
http://www.interactivebrokers.com/php/apiUsersGuide/apiguide/api/historical_data_limitations.htm#HT_historicaldata
Note that they are adding new limitations.
Previously there was only 60 request per 10 minutes limit that I
mentioned below but now as you can see there are more limits.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: Tomasz Janeczko
To: amibroker@xxxxxxxxxxxxxxx
Sent: Thursday,
October 23, 2008 1:32 AM
Subject: Re:
[amibroker] Re: Interactive Brokers plugin 1.8.1 - a problem back
filling
Backfill throttling is a LIMITATION
IMPLEMENTED BY INTERACTIVE BROKERS inside TWS.
=======================================================================
Interactive Brokers allows the following MAXIMUM
amount of backfill:
Sixty 5-day segments per any 10 minutes
period.
If you download say 30 days for every symbol it
equals SIX 5-day segments
per symbol, effectivelly leading to only 10
symbols (30days each) during any 10 minute period.
If you reach the limit Interactive Brokers will
send error 162 (MAXIMUM limit reached - Throttling),
until 10 minute segment passes without allowing
any subsequent backfill.
Only AFTER 10 minutes you will be allowed to
backfill again.
It is really NOT mine invention - it is
Interactive Brokers policy - please complain to them.
There are zillions of
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "Barry Scarborough" <razzbarry@xxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Thursday, October 23, 2008 1:23
AM
Subject: [amibroker] Re: Interactive Brokers
plugin 1.8.1 - a problem back filling
>I use the real time quote window and I have 60
symbols in it. When I
> back fill I get through a number of then and
get a throttling error.
> When the timeout completes I get a window to
start receiving data and
> immediately get the throttling error again
and the time out starts
> again. Is this what I should expect or is
there another problem?
>
> Thanks,
> Barry
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx>
> wrote:
>>
>> Hello,
>>
>> New version of Interactive Brokers plugin
is released now:
>> http://www.amibroker.com/devlog/2008/10/22/interactive-brokers-tws-
> plugin-version-181/
>>
>> This is recommended upgrade for anyone
using any earlier version.
>>
>> Best regards,
>> Tomasz Janeczko
>> amibroker.com
>>
>
>
>
>
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