[Cider9986]

Fidelity offers something called Fidelity Zero funds which are pretty cool because there is 0% expense ratio. You only want to use them in a tax advantaged account in case you want to move away from Fidelity, other brokerages can't transfer them so you'd have to sell and incur capital gains, unless it's in a tax advantaged account.

FNILX(S&P500) FZIPX(US Mid and Small) FZROX(Total US) and FZILX(International)

It's the ultimate realization of the Bogleheads strategy.