<prompt> Human: Everyone always seems to recommend Vanguard funds and when I did the research for quite a few things, their expenses really are significantly lower. The returns havent been bad either. Im wondering if when we talk about diversification, if that also means not having all my money with Vanguard funds -- heres how Im exposed to Vanguard right now: 401k -- 100 Vanguard Target Retirement Roth IRA -- 80 VFIAX Vanguard 500 Admiral and 20 VGHCX Healthcare fund Regular brokerage for savings extra savings -- 90 VFIAX and some individual stocks for nostalgic reasons 10 529 plan for kids -- Vanguard age-based option through my states 529 managerMy employer luckily still offers a pension, which represents a bulk of my retirement savings and will be my primary source of retirement income.TL;DR: All my non-pension savings retirement, 529, other investments are with Vanguard. Is that bad?  <response>: Found this over at Bogleheads, you may find useful: 