Exchange-Traded Funds (ETFs) evolved in the early 1990s, starting with the launch of the SPDR S&P 500 ETF in 1993. ETFs combined the flexibility of stocks with the diversification of mutual funds. Over time, they expanded to include various asset classes, sectors, and geographies. ETFs became increasingly popular due to their low costs, liquidity, and tax efficiency. https://businesssuccesselites.com/finance/evolution-of-exchange-traded-funds-etf/