Quote from OldTrader:
I agree with you about one thing....I think they have the day trading requirements set higher than they need to be given volatility, and given that they have a real time monitoring system to close positions that go under maintenance. I have a variety of other posts to this effect.
That said, I think anyone trading the size that requirements a lower type of margin requirement is an accident waiting to happen. I think $4K is more than low enough on the ES. And frankly, I think most people should trade with much higher margin. I do.
But again, volatility doesn't require it. Simple prudence from an individual traders standpoint does. But that isn't IB's job, so to speak.
OldTrader