Mack Investment Securities, Inc. (CRD# 21469 / SEC# 8-38686) was a U.S.-based securities broker-dealer firm established in Illinois in 1987. The company's business involved acting as a broker or dealer for corporate equity and debt securities, retailing mutual funds, and trading U.S. government securities. According to records from the Financial Industry Regulatory Authority (FINRA), the firm's registration was terminated on November 2, 2012, and it is no longer in operation.

Founded in

United States