maintenance margin requirementglossary / maintenance margin requirement The minimum equity that a buyer must keep in a margin account, expressed as a percentage of the account value. [Cases: Securities Regulation 45.11.] 词条贡献者 双语律师Simon,毕业于亚洲一流的高级翻译学院,擅长翻译涉及金属和矿业领域的法律文件。