Seoul Guarantee Insurance Company is an insurance company headquartered in Seoul, South Korea. Founded in 1969, SGI provides contract bonds to facilitate the economic activities of individuals, businesses, and other bond types, including mobile phone installment payment bonds, mid-range interest rate loan bonds, and housing rental loan bonds. SGI is the largest provider of guarantee insurance in South Korea. At the end of 2024, SGI had a guarantee balance of US$344.4 billion. It listed on the Korea Exchange in 2025, debuting on the KOSPI market. Wikipedia