The worldwide impact investment market is now valued at $715bn. This new segment is in turn part of the wider market for environmental sustainable governance (ESG) investments, which has grown from $22 trillion to $31trillion — 15% of the world’s investable assets — over the past two years, according to the GSI Alliance. It has the potential to be much larger still, with The International Finance Corporation estimating that investor demand for impact investments alone amounts to $26 trillion — 50 times the size of this market in 2018.