securities actglossary / SECURITIES ACT securities act. A federal or state law protecting the public by regulating the registration, offering, and trading of securities. See SECURITIES ACT OF1933; SECURITIES EXCHANGE ACT OF1934; BLUE-SKY LAW. 词条贡献者 译者亚明,毕业于国内一流的高级翻译学院,擅长翻译各种与网络安全、隐私和数据保护相关的法律文件。