Reviewers frequently highlight the trade-offs between these "Big Three" brokerages:
: Uniquely owned by its fund shareholders, meaning profits are reinvested to lower fund fees. best place to buy index funds
: Trade windows only run once or twice daily, which discourages impulsive trading and supports long-term strategies. Summary of Best S&P 500 Index Funds (2026) Fund Family Expense Ratio Minimum Investment Fidelity FXAIX Schwab SWPPX Vanguard VFIAX Community Perspectives best place to buy index funds
: Its S&P 500 index fund (SWPPX) remains one of the cheapest available with a 0.02% expense ratio. M1 Finance: Best for Automation best place to buy index funds