From my understanding IB offers intraday margin of 25%, as in if you $25,000 you can buy up $100,000 worth of equities. However, when I was doing margin checks, the maintenance margin and initial margin appear to be the same. So, if you max out your margin at 4x, you will be liquidated with a small move against you. Is that correct? Seems like a pointless feature to have if that is true since your initial margin must be much lower leverage than 4x for any realistic trading.