Tom Hendrickson, President of ETF Trends & ETF Database, recaps the most popular ETF stories on their platform this year.  Morningstar’s Ben Johnson offers his perspective on 2021’s top ETF stories, along with a prediction for 2022.  Toroso’s Michael Gayed spotlights the ATAC U.S. Rotation ETF (RORO) and the ATAC Credit Rotation ETF (JOJO).