Prices happen at the margin though. You only need a small percentage of traders to be active investors to create an efficient market. https://amp.businessinsid

Prices happen at the margin though. You only need a small percentage of traders to be active investors to create an efficient market. https://amp.businessinsider.com/passive-investing-makes-markets-more-efficient-2016-5 https://amp.businessinsider.com/passive-investing-makes-mark...