A hatred of fees may lead to passive investments making up half of all U.S. equity retail flows in 2018 and 2019, according to Credit Suisse's Craig Siegenthaler. In a new note, Siegenthaler writes that a focus on fees is the main driver in the rotation from active to passive, especially as active manager have to outperform more to make their strategies breakeven for clients paying higher costs. Read the original story from Barron's.