market intermediaryglossary / MARKET INTERMEDIARY market intermediary. Securities. A person whose business is to enter into transactions on both sides of the market. Investment Company Act, 15 USCA § 80a-3(c)(2)(B)(i). 词条贡献者 译者蒋毅,毕业于亚洲顶尖的高级翻译学院,擅长翻译各种与破产与资产重组相关的法律文件。