Woori Financial Group is a Seoul-based banking and financial services holdings company and is the largest bank in South Korea. Woori has had a short history as a financial institution. It was formed in 2001 from the forced merger of 4 predecessor commercial banks and an investment bank. The banks were taken over and recapitalised by the government because they had fallen below the Basel I Accord mandated eight percent capital adequacy ratio. The South Korean Government, through the Korean Deposit Insurance Corporation, remains the primary investor as a result. This came about as a part of the 1997 Asian financial crisis, which affected the operations of virtually all banks and financial firms in South Korea. Wikipedia