Some of the most basic similarities the funds have that makes them almost identical to most people,
- Both of the funds follow the same investment profiles and have taken stocks in the same companies being products of a single enterprise.- Both funds have the same market capitalization, amounting to a staggering $840 billion each.
The most basic distinction between the two is that VTI is an ETF, whereas VTSAX is a mutual fund. Therefore, there is a clear difference in investing in these funds.
With VTSAX, you can automatically invest every week or month without having to think about it. With VTI, you have to purchase the ETF manually every month.