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At the helm of one of the world ’ s largest e-commerce businesses , Forbes estimates that Jack Ma has a net worth of around $ 39bn . The Chinese business leader is the co-founder and executive chairman of Alibaba Group . In September 2018 , Ma announced he would step down as executive chairman in a year ’ s time and that he would be succeeded by Daniel Zhang . Alibaba made history with its 2014 IPO – it set a record for the world ’ s biggest public stock offering , raising $ 25bn . www . alibaba . com FEBRUARY 2019