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 资深译员Michael,毕业于一所培养高级翻译以及跨文化事务专家的精英大学,专注翻译各种与商业地产租赁有关的法律文件。