With the S&P 500 enjoying its best start to a year since 1987, bond ETFs have somewhat surprisingly drawn investor interest.  BlackRock’s Karen Schenone helps make sense of the outsized bond ETF flows and also discusses factor-focused and ESG bond ETFs.  ETF.com’s Dave Nadig offers perspective on Morningstar’s annual fund fee study.  Distillate Capital’s Tom Cole spotlights their U.S. Fundamental Stability & Value ETF (DSTL).