Phuong Thao cofounded and is a major stockholder in Sovico, which owns the commercial HD Bank and international budget airline VietJet Air, both of which she runs.
HD Bank merged with Dai A Bank in 2014 and is now among the biggest joint-stock commercial banks in Vietnam, with total assets of nearly US$5 billion, 10,000 employees and 225 branches and offices.
Last year it bought Société Générale Viet Finance, a consumer-finance company owned by France's Société Générale.