Passive investments such as index funds and exchange-traded funds control about 60% of the equity assets, while quantitative funds, those which rely on trend-following models instead of fundamental research from humans, now account for 20% of the market share, according to estimates from J.P. Morgan.
https://www.cnbc.com/2019/06/28/80percent-of-the-stock-market-is-now-on-autopilot.html
