I'm finding IB'S margin requirements are strictly enforced more than necessary. If you have a margin call IB will liquidate the account very quickly. They do not have the three day limit, like most brokers do. Should the market open badly say a 500 point drop you would be liquidated in the morning, and should the market rally in the afternoon, you would have lost most of your buying power and stocks. I know most people watch their margin levels, but i have found they are unnecessarily strict. Any opinions?