Why Robot Trading Will End in Disaster

I’m talking about computers making the portfolio allocation and buy/sell decisions in the first place, based on algorithms, with no human involvement at all. This is now the norm.

Eighty percent of stock trading is now automated in the form of either index funds (60%) or quantitative models (20%). This means that “active investing,” where you pick the allocation and the timing, is down to 20% of the market. Although even active investors receive automated execution.