QQQ and FXAIX one or the other

Is there any benefit of having QQQ as well as FXAIX? If the top 10 holdings are very similar, does it make sense under any circumstances to hold on to both? A few years ago, when a portfolio was put together several shares of QQQ were purchased. Later fxaix was purchased. Mind you, these were bought on someone else's behalf buy an advisor. Would it make sense to consolidate into one or the other or just leave both funds as they are submitted by /u/crunchyturdeater [link] [comments]