<prompt> Human: 100 of the posts I have seen in this subreddit which mention their investment portfolios use Vanguard funds. However, I frequently see the claim that Fidelity is a viable alternative. Is there any financial reason why everyone has decided Vanguard is better?Is it just because the boglehead website is named after the Vanguard founder?  <response>: Is there any financial reason why everyone has decided Vanguard is better?Vanguard has a broader range of indexmutual funds available, however the argument that Fidelity cant compete on price for the flagship funds like the SP 500 simply isnt true anymore. The Spartan fund series, for example, is comparable in price to Vanguards offerings. 