More VTSAX or add VFIAX

[merlin7676]

I'm just curious if it's worth having both VTSAX which follows the entire stock market and VFIAX which follows only the top 500 companies (S&P 500).

For example, for simplicity sake, let's say I contribute $10 every paycheck to VTSAX.  And I want to start contributing $15 every paycheck.

Should I just dump the extra $5 into my existing VTSAX or would there be a good reason for dumping that $5 into a VFIAX account?

Since VTSAX already covers the 500 in the VFIAX, as well as mid and small cap funds, is it worth it?

thanks

[bacchi]

Stick with VTSAX. Their returns are very similar, with VTSAX gaining slightly more over the past decade, and VTSAX holds mid and small cap as you mentioned.