Since 1976, SWBC has been providing a wide range of insurance, mortgage, and investment services to financial institutions, individuals, and businesses. Company Overview Headquartered in San Antonio, SWBC is a diversified financial services company providing a wide range of insurance, mortgage, and investment services to financial institutions, businesses, and individuals. With offices across the country, SWBC is committed to providing quality products, outstanding service, and customized solutions in all 50 states.