settlement dateglossary / settlement date Securities. 1. The date on which an investor must pay the broker for securities purchased. 2. The date on which a seller must deliver negotiable certificates for securities sold. 词条贡献者 法律翻译Frank,毕业于英国一流的高级翻译学院,专注翻译各类与娱乐、体育及媒体有关的法律文件。