ETF Trends’ Lara Crigger covers a range of topics including ARK’s recent challenges, gold ETF inflows, bitcoin ETFs, and the impact of proposed GICS sector changes.  Dimensional’s Dave Plecha discusses the firm’s unique approach to fixed income and highlights their recently launched suite of bond ETFs.  Advisor Circle’s Matt Middleton and Ritholtz’s Josh Brown offer a sneak preview of the upcoming Future Proof festival.