You're looking at a +.20% difference in returns after tax offsetting the lower expense ratio on Fidelity 500 s&p 500 index in Vanguard's favor.
Looks like that ETF index fund patent is legit. I would imagine this applies to FZROX and the other 0% expense ration fidelity fund. I think Fidelity has an awesome interface and app, but it looks like Vanguard gets you better returns at the end of the day. They should use this angle in their marketing (which i believe is weak). Their response to fidelity 0% expense ratio was poor in my opinion (lowered minimum investment for admiral shares to 3 k down from 10 k)
This post talks more about it:
Submitted April 06, 2019 at 08:18AM by Masteron-K4 http://bit.ly/2FX0RfI