An ETF (Exchange-Traded Fund) and a Mutual Fund both let investors buy a diversified basket of securities in a single purchase, but they differ fundamentally in how they trade and how they're priced. ETFs trade on exchanges throughout the day like individual stocks, while mutual funds are priced and traded only once daily at their end-of-day Net Asset Value.
Investors compare the two because these structural differences ripple into cost, tax treatment, and control — factors that can meaningfully affect long-term investment outcomes even when the underlying holdings are similar.