https://gist.github.com/ReliefCrew/1376d483abeb8e4641b038aa41e2424e<p>The details have been written up in the above URL but the summary is as follows...<p>In the 10.x versions of TraderWorkstation (TWS) and IBGateway software, non-simultaneous clients with ID numbers different from the first don't receive price ticks for a given stock after requesting them.<p>Is anyone else having the same problem or able to reproduce the issue?