Here's a list of the Vanguard S&P equity ETFs: --Vanguard S&P 500 (NYSEArca: VOO - Expense Ratio: 0.06% --Vanguard S&P 500 Value (NYSEArca: VOOV - Expense Ratio: 0.15% --Vanguard S&P 500 Growth (NYSEArca: VOOG - Expense Ratio: 0.15% --Vanguard S&P MidCap 400 (NYSEArca: IVOO - Expense Ratio: 0.15% --Vanguard S&P MidCap 400 Value (NYSEArca: IVOV - Expense Ratio: 0.20% --Vanguard S&P MidCap 400 Growth (NYSEArca: IVOG - Expense Ratio: 0.20% --Vanguard S&P SmallCap 600 (NYSEArca: VIOO - Expense Ratio: 0.15% --Vanguard S&P SmallCap 600 Value (NYSEArca: VIOV - Expense Ratio: 0.20% --Vanguard S&P SmallCap 600 Growth (NYSEArca: VIOG - Expense Ratio: 0.20%