See Performance Bond Call. Chicago Mercantile Exchange Glossary
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A call made by the clearing house or broker to a counterparty whose margin account has fallen below the minimum requirement or the maintenance margin. Also referred to as a maintenance call.
► See also Maintenance Margin.
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margin call UK US noun [C]
► FINANCE, STOCK MARKET a demand to increase the amount of money or assets in a margin account because it has fallen below the lowest amount allowed
Financial and business terms. 2012.