From Dimensional Fund Advisors The impact of missing just a few of the market's best days can be profound, as this look at a hypothetical investment in the stocks that make up the S&P 500 Index shows. A hypothetical $1,000 turns into $138,908 from 1970 through the end of August 2019. Miss the S&P 500's five best days and that's $90,171. Miss the 25 best days and the return dwindles to $32,763. There's no proven way to time the market—targeting the best days or moving to the … [Read more...] about What Happens When You Fail at Market Timing