a demand by a broker that a customer deposit enough to bring his margin up to the minimum requirement
双语例句
On Friday, the mixture of margin call bargains combined with sells that were waiting for the late tickers on Thursday led to a bit of a gain. 星期五,增收保证金的和约与股票行市自动收录机显示的星期四最后达成的交易使股市行情略有回升。