https://www.valuewalk.com/2016/01/u-s-public-equity-bull-market-ages-savvy-investors-remain-mindful-behavioral-traps-navigate-active-passive-debate-based-individual-long-term-goals-not-recent-market-performance-sa/
As U.S. Public Equity Bull Market Ages, Savvy Investors Remain Mindful of Behavioral Traps and Navigate the Active-Passive Debate Based on Individual Long-Term Goals, Not Recent Market Performance, Says Cambridge Associates