margin call

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margin call

Từ điển WordNet

    n.

  • a demand by a broker that a customer deposit enough to bring his margin up to the minimum requirement; call

Bloomberg Financial Glossary

追缴保证金通知|追补按金通知追缴保证金通知;追补按金通知
A demand for additional funds because of adverse price movement. Maintenance margin requirement, security deposit maintenance.

Investopedia Financial Terms

Margin Call
A broker's demand on an investor using margin to deposit additional money or securities so that the margin account is brought up to the minimum maintenance margin.

This is sometimes called a "fed call" or "maintenance call".
Investopedia Says:
You would receive a margin call from a broker if one or more of the securities you had bought (with borrowed money) decreased in value past a certain point. You would be forced either to deposit more money in the account or to sell off some of your assets.