<prompt> Human: Pretty much the title. I have around 17k vested in an account with a target fund date of 2055. That is an unrealistic retirement date. It should be 2045. What is the risk of just moving it to the different date? Thanks in advance.  <response>: The Vanguard 2055 fund VFFVX is 90 stocks, 10 bonds.The Vanguard 2045 fund VTIVX is 89.99 stocks, 10.01 bonds. 