I would be very surprised if either wealth front or betterment has better ROI than Vanguard. One exists for the purpose of sucking you dry, the other is a mutua

I would be very surprised if either wealth front or betterment has better ROI than Vanguard. One exists for the purpose of sucking you dry, the other is a mutually owned cooperative with a mission to drive down costs and a history of doing so. Unfortunately as far as I'm aware wealthfront and betterment don't provide aggregate performance information (although if it were in their favor I'm sure they would).