China announced that it will invest its gigantic foreign exchange reserves more heavily in green assets in the future. A rethink is urgently needed because sustainability considerations have hardly played a role in investment decisions so far. According to rumors, the largest fund even wants to invest $19 billion in the oil giant Saudi Aramco. At present, sovereign wealth funds around the world are finding it difficult to switch to green investments: Their profitability is uncertain and the switch entails costs.
