Yet Another Study Shows That Timing the Market Doesn't Work

Here is the link.

                                            2015 Return    Annualized return, 1996-2015
S&P 500                                 1.38%              8.19%
Average equity                      (2.28%)             4.67%
mutual fund investor

A hypothetical investor with $100,000 would watch their investment grow to $249,000 (before taxes) over 20 years at a 4.67% annual rate of return. That same investor, earning, 8.19% per year, would end up with $483,000 -- nearly twice as much.