Many of Stephens' private investments were quite successful. In the late 1960s, anticipating the coming revolution in bank data processing, Jack Stephens deployed excess computing capacity at Union Life Insurance Company, which was owned by him and his family. With $400,000 in start-up capital invested, he created Systematics, which would later become a leader in the bank data processing industry. Systematics was eventually acquired by Alltel Corporation and became Alltel Information Services. AIS was later acquired by Fidelity National Information Systems.