The group is a long term investor. This capacity for long term financial commitment is unique in France. Through its long term investments, Caisse des Dépôts gives time for innovation and sustainable growth. The group invests in development projects in all territories, to respond to needs the market can't meet alone. This role is widely recognised by the political and economic powers.

The group is made up of the Public Institution and its subsidiary companies. The Public Institution brings together the functional activities (general secretariat, communication, etc) and operational activities (banking departments, savings funds). The subsidiary companies, carry out market activities, adhering strictly to the rules. But they also contribute to the group's long term social objective.