Tags Hana Financial Group South Korean financial group to acquire BIDV stake Monday, Mar 12, 2018 The Hana Financial Group has decided to expand its business in Viet Nam by acquiring a stake in Bank for Investment and Development of Vietnam (BIDV). HDBank signs agreement for strategic partnership with S Korea's HanaBank Monday, May 11, 2015 HDBank signed an agreement for strategic co-operation with South Korea''s HanaBank last Friday.