Mutual funds, ETFs (Exchange-Traded Funds), and index funds are popular investment vehicles, but they differ in structure and management. Mutual funds are actively or passively managed pools of money where investors buy shares at the fund\'s net asset value (NAV), typically traded once per day. ETFs trade like stocks on an exchange and offer flexibility with real-time pricing, often with lower fees than mutual funds. Index funds are a type of mutual fund or ETF that tracks a specific market index, like the S&P 500, aiming for long-term, low-cost growth. Choosing the right one depends on your goals: mutual funds suit those seeking professional management, ETFs are ideal for active traders or cost-conscious investors, and index funds appeal to long-term, hands-off investors. Each has its pros and cons, so understanding your investment style, risk tolerance, and financial goals will guide your decision.