You are absolutely right on the fees being a problem here. I opened a wealthfront account a couple of years ago and added some money because I really liked the interface and I was sold on tax loss harvesting. I recently wanted to compare how my wealthfront account did compared to the S&P500 and I was surprised to see a 0.98 beta (almost the same monthly returns as S&P500) and an alpha of (-0.15 almost the fees they are charging) with very little r-squared error. Atleast for my risk profile (10), I would have been better off investing directly in S&P500. I didn't get high returns nor did I get reduced volatility with the wealthfront portfolio.