Sustainable Investment explicitly in- corporates environmental, social and governance (ESG) criteria into the investment process in order to generate long-term, risk-adjusted returns: Ɓ Investment strategy: Depending on client expectations, risk/return profiles and asset classes, we define the investment strategy, considering the four main sustainability approaches, either individually or in combination: (activities, (2) norm-based screening, (3) best-in-class approach and (4) thematic approach.