In April 2018, armed with a large number of ETFs and long-enough historical data, we applied our back-testing methodology for individual stocks to the universe of ETFs to determine if the same (or some) of those components could useful for assessing ETF performance prospects. One of the factors we reviewed was fund flow (adjusted by AUM), which revealed that those ETFs experiencing the largest asset inflows proceeded to significantly underperform.
Jan
08
2021