BNK Financial GroupBNK Financial Group Inc. is a financial holding company based in the Busan-South Gyeongsang region. It is one of the three regional financial holding companies in South Korea, alongside DGB Financial and.HistoryBNK Financial Group was established as BS Financial Group in 2011. Busan Bank, a regional lender, was integrated with its affiliates, including BS Securities, BS Capital and BS Credit Information under the new financial holding company. In 2014, BS Financial Group acquired Kyongnam Bank from Woori Financial. After acquiring Kyongnam Bank, BS Financial was renamed BNK Financial in 2015.