Guosen Securities releases a research report analyzing the investment opportunities in US stock ETFs. The size of the US ETF market is $8.15 trillion, with over 3400 products. In terms of investment strategy, index-tracking, enhanced index, and actively managed ETFs account for 74%, 19%, and 7% respectively. The trading volume of US stock ETFs accounts for about 30% of the stock market trading volume, higher than the 13%-15% ratio in Europe and the Asia-Pacific region, indicating higher market liquidity, transparency, and pricing efficiency. The following is a summary of the research report: The US ETF market has been developing for over thirty years, diversifying and expanding with a variety of investment options. The development of the US ETF market can be traced back to 1993 when the S&P 500 index-tracking ETF (SPY) was first listed on a US exchange. Since then, with increasing demand from investors for convenient, low-cost, and liquid investment tools, various ETF products have gradually gained popularity. The US ETF market is large, liquid, and dominated by equity ETFs. The size of the US ETF market is $8.15 trillion, with over 3400 products. In terms of investment strategy, index-tracking, enhanced index, and actively managed ETFs account for 74%, 19%, and 7% respectively. Equity and fixed-income ETFs account for 70% and 19% respectively, with equity being the most numerous and largest asset class in the US ETF market, as well as the most actively traded. The trading volume of US stock ETFs accounts for about 30% of the stock market trading volume, higher than the 13%-15% ratio in Europe and the Asia-Pacific region, indicating higher market liquidity, transparency, and pricing efficiency. The US ETF market has a high level of concentration. The top 5 ETFs by assets under management account for 30% of the total market, demonstrating a significant leadership effect. Large ETFs typically have higher liquidity and lower costs, allowing for cost savings on fund management and trading costs for investors. BlackRock, Vanguard, and Charles Schwab are the top three largest ETF managers in the US, holding a 75% market share. US stock ETFs offer a wide range of investment options with multiple applications and advantages. US stock ETFs come in a variety of types, including those tracking specific indices, industries, themes, or strategies. In recent years, actively managed ETFs have also become more popular, allowing investors to strategically allocate assets, tactically construct portfolios, build strategic combinations, and manage risk exposure to target sectors, all while enjoying low-cost management services.