<prompt> Human: I am in a position to get some Vanguard Index funds added to my companys 401k portfolio. What would you recommend as the top 5 to add?Edit: Just to clarify, I am not the plan administrator, I am an employee. Our 401k plan has plenty of higher cost, actively managed funds but zero low cost, index funds.Thank you for all of the comments. The recommendations are mostly aligning with the results of my independent research. Because, of course, I am doing my own research in addition to getting advice from random internet strangers. This is just one data point.Edit 2: I forgot to mention that the financial adviser we have not internal in the company or paid by our employees tried to talk me out of any index funds and sent me some doc that compared index funds to perfectly timed active management. Well, turns out that if you can time the market perfectly, you make a lot of money. Who woulda thought?!  <response>: 1. Vanguard SP 500 Index2. Vanguard Extended Market Index3. Vanguard Total International Index4. Vanguard Total Bond Index5. Vanguard Wellesley Income FundIf you can get them in either Admiral or Institutional shares, your co-workers would be thrilled as it would be a killer 401k.Generally, I prefer combining 1 2 into just a Total Market Fund. However, since I know plenty of people who prefer to invest only in the SP 500, splitting them gives you the option to invest in just the SP 500 OR combine it with the Extended Market in an 8119 allocation to achieve a Total Market allocation Source 