The uptake of index products has been widely hailed as an expression of investors’ preference for low-cost investments. And a quest to lower total portfolio costs and cut out higher-priced, underperforming funds may well be the main driver of the enormous asset flows into passively managed products: It hasn’t been lost on investors that most active funds, especially high-cost ones, don’t beat their cheap index counterparts after fees.
Source: Your Financial Life Is Complicated; Your Portfolio Shouldn’t Be
My Comments: Pretty good insights by Christine from Morning Star