"In the interim IB will with immediate effect increase its Initial Margin
requirements on Volatility Products to a degree consistent with the upcoming
19 August increases in Maintenance Margin."
Initial Margin 月初就生效了,只影响建仓,不影响现有持仓
Maintenance Margin 19日生效,影响现有持仓,最好自己平掉一部分仓,免得被强平