: A massive ETF with a 0.03% expense ratio , favored for its tax efficiency and accessibility across most brokerages.
: Currently one of the lowest-cost ETFs tracking this index with a 0.02% expense ratio . Total Market and Zero-Fee Funds good index funds to buy
: Tracks the Nasdaq-100 , heavily weighted toward technology and growth companies, with an 0.20% expense ratio . : A massive ETF with a 0
For 2026, top index funds are defined by low costs (expense ratios) and broad diversification. Leading choices typically track major indices like the or the Total Stock Market . Top S&P 500 Index Funds (U.S. Large-Cap) good index funds to buy