Charts: Different yesterday close for constant tick charts

A:  The value for Yesterday Close is found by scanning back through the tick chart bars and finding the last bar with a timestamp ahead of or at the day session close time.

The Friday bar will always continue with data from Sunday evening if the Day Session Only box is unchecked on the chart's property form.   Ensign, however, has an option to start a new constant tick bar at either session open.   Click menu Setup | Charts and check the box for 'New Tick bar at either session open'.  Then Ensign will discover in your charts a bar whose close is the last tick of the day session, which will be the same tick on the 133 and the 155 tick charts.