https://ibkrcampus.com/trading-lessons/margin/它是以个股举例,不过也没明说是以整户算,所以满模糊的For rules-based, the Federal Reserve sets rules forReg T accounts, ......Should the value of his/her shares decline, thebroker will insist on the client adding cash to theminimum required levels.但这份官方声明
https://reurl.cc/My47nn 又指出IB generally will not issue margin calls他们可以在不追缴的情形下直接强平,和上述十分矛盾