Edwin Soeryadjaya is the son of the late William Soeryadjaya, founder of conglomerate Astra International.
William sold his shares in Astra in 1992 in order to bail out Bank Summa, run by a family member; as a result his fortune was wiped out.
Edwin helped rebuild the family fortune via holding company Saratoga Investama Sedaya, which he founded in 1997.
Edwin's son Michael is president director of the firm, which is publicly traded and has stakes in more than 15 companies, including coal firm Adaro Energy.
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