<prompt> Human: I have some money in VFFVX, a Vanguard Target Date Fund for 2055. Ive noticed the share price can be a little variable, but in the long term always goes up obviously. Say I want to invest 5k right now, on Monday the share price might be 39.25, and on Tuesday it might be 40. So I could end up with 127 shares vs 125, which will compound later on.Is this negligible and I should just buy right away? Or is there an investment pattern that might consistently net me more shares?EDIT: Sooner is better, thx for the responses  <response>: Is there an ideal time to buy more shares of a Target Fund?Its the same as planting a tree. The best time to do it was 20 years ago, but the second best time is now. 