CSDZ — established in 1919 initially as a construction contract surety organization — is a nationally recognized specialty ri ... sk management organization. In partnership with our parent company, Holmes Murphy, we are proud to be one of the largest employee-owned brokerages in the nation. We provide services to business and industry leaders in the areas of property casualty insurance, employee benefits, professional services, healthcare, captive insurance, private clients, risk management, and loss control. read more