noun
additional margin; margin call deposit
Finance term for extra funds required to maintain a margin position; often abbreviated as 追証 (おいしょう).
See also: 追証
株価が急落したため、追証拠金を差し入れる必要があった。
Because the stock price plummeted, I had to deposit additional margin.
追証拠金が発生すると、追加の資金を用意しなければならない。
When a margin call occurs, you must prepare additional funds.