I can't seem to figure out how to increase the time interval past market close. I'd like to see activity until about 4:30. Can anyone help? Thanks in advance.
You'll need to turn on the All Sessions selection on the main toolbar in order to see the pre or post market trading activity in a chart.
Say what you want about eSig and QCharts, these guys are all over this board and responsive to their customers. That's one clear benefit of eSig taking over QCharts.