Best Vanguard ETFs for Portfolio Diversification Vanguard 500 Index Fund ETF (NYSE:VOO) Vanguard Total Stock Market Index Fund ETF (NYSE:VTI) Vanguard Small-Cap Index Fund ETF (NYSE:VB) Vanguard Energy Index Fund ETF (NYSE:VDE) Vanguard Health Care Index Fund ETF (NYSE:VHT) Jan 18, 2023