Some information for anyone out there working on software to interface with OptionsXpress (brokerage)… their API will accept and execute “after hours” orders!
I’m trading eminis, and the web-based OX trading platform will not accept orders from me (or execute a pre-programmed limit or stop order) after OX business hours (3:30 PM)… even though GLOBEX is open six days a week, for most of the day/night. Their API will accept such orders, however! So now I can trade during GLOBEX hours using my automated system.
Hope that’s helpful to some other developer out there.