 His family were pioneers in the Greek steel industry and began dealing in the dry cargo sector of the shipping industry in the early 1950s.Angelopoulos built an internationally based group of companies with interests in shipping and steel, and with investments in real estate and private equities, as well as other financial entities worldwide.In 1996, he established Metrostar Management in Athens, and entered the oil tanker market in the same year, with his company going on to become one of the world's leading oil tanker operators.