"More than a quarter of the $88 trillion assets under management globally are now invested according to environmental, social and governance principles known as ESG, a McKinsey & Co. study found."

[COMMENTARY] McKinsey doesn’t seem to be referring to original work as the figures they’re quoting appear largely from published works such as the 2016 Global Sustainable Investment Review. Perhaps they should state their sources. Anyhow, it’s terrific they’re engaged in promoting ESG!
McKinsey: ESG No Longer Niche as Assets Soar Globally, by Amy Whyte, October 27, 2017, Institutional Investor, USA.