Margin Call(마진콜) By JUSTIN KUEPPER What Is a Margin Call?(마진 콜이란) A margin call occurs when the value of an investor's margin account falls below the broker's required amount. An investor's margin account contains securities bought with borrowed money (typically a combination of the investor's own money and money borrowed from the investor's broker). 마진 콜은 투자자의 마진 계정의 가치가 브로커의 요구 금액보다 낮을 때 발생합니다..