Ater a 45 minute wait on hold, I was told by IB rep that the margin req. changed today, without notice. It is 4:1 initial and maint from 930AM-350 PM From 350-400 PM the maint and initial are both 2:1 and from 400 PM to 929 AM the initial is 2:1 and maint is 4:1 . I was liquidated in that 10...