Both Betterment and Wealthfront also give a nod to inflation protection with inclusion of the Vanguard Short-Term Inflation-Protected Securities Index ETF (NASDAQ:VTIP). The winner in the frequency contest was the Vanguard Total Stock Market Index (NYSEARCA:VTI) which was included in all of the robo-advisors except Schwab. On the date of publication, Barbara Friedberg was long VTI, VWO, VEA, VNQ and IAU.