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 译者Kelly,美国顶尖商学院国际经济法专业,擅长翻译各种与投资基金与基金顾问诉讼相关的法律文件。