Vanguard Total Stock Market ETF (VTI)

VTI provides the broadest US equity exposure with 3,800+ stocks across capitalizations, capturing 100% of the US stock market. With $430B in AUM and a 0.03% expense ratio, it outperforms #4 VOO by offering small-cap coverage at no extra cost. Since 2010, VTI's 0.99 correlation with the market beats the 0.95 average for multi-cap funds, and its $1.2 annual dividend per share adds income appeal.