The Global Sustainability Leaders Performance Index is aimed at giving investors a platform for making responsible and sustainable investments. Unlike with traditional investments, responsible and sustainable investing takes ecological and social factors into account in addition to conventional investment criteria such as returns, risk and liquidity. Corporate governance aspects are also considered. The Global Sustainability Leaders Performance Index comprises companies that rank among the top performers in their industry in terms of environmental, social and corporate governance factors (best-in-class approach). Companies active in controversial business areas and those that use controversial business practices are excluded.