Complementa offers investment management services. The core activities include: Investment Reporting: creation of reports on investments and their performance; Investment Controlling: monitoring and controlling of investments; Investment Consulting: consulting on the selection and management of investments; Investment Accounting: accounting and management of investments; Portfolio Tools: provision of tools for managing investment portfolios; ESG Services (Environmental, Social and Governance): consulting and support for integrating sustainability aspects into investment decisions; Multi Custody Service: management of investments with various custodian banks and asset managers. The company supports various clients, including pension funds, family offices, companies, foundations, insurance companies, banks and asset managers.