In its 2015 "Guide to Retirement," JP Morgan Asset Management crunched the numbers on what can happen to investor returns if investors miss out on the market's ten best days.
Specifically, if an investor stayed fully invested in the S&P 500 from 1995 through 2014, they would have had a 9.85% annualized return.
However, if they had missed just the ten best days during that period, annualized returns would collapse to 6.1%. Over the long-term, this 3.8% performance gap would cost an investor $32,788 on the performance of $10,000 invested between January 3, 1995, and December 31,...

