Goldman Sachs projects that the ETF market could exceed 6,000 listed funds by the end of 2026, surpassing the number of individual U.S. stocks, while U.S. ETF investments are forecast to exceed $2 trillion, or 40% above 2025 levels. More than $1 trillion flowed into U.S.-listed ETFs during the first half of the year, putting the market on track to reach that target. Institutional investors are expected to drive much of the expansion, supported by a favorable U.S. regulatory outlook, even as interest rates fluctuate and the dollar remains strong. Demand is also shifting toward active ETFs, which received more than 35% of ETF flows this year and represent about 13% of the $16.1 trillion U.S.-listed ETF market. Assets in third-party model portfolios rose 46% over the past year to $950 billion. Within the artificial intelligence trade, semiconductor ETFs attracted more than $19 billion in June while software ETFs recorded roughly $1.9 billion in outflows, reflecting more targeted positioning. ETF trading volumes are running 50% above 2025 levels, averaging about $320 billion in daily notional volume, and can account for as much as 40% of overall trading activity during market stress. Investors are expected to monitor ETF inflows, underlying-asset performance and regulatory developments, which could affect adoption, liquidity and volatility.