Group 1 - The ETF market is entering a "thousand-base era," with a wide variety of ETF tools available, making it challenging for investors to achieve their financial goals [1] - Investors often face difficulties in distinguishing between similar ETFs, such as 中证A500 and 科创板50, which are both broad-based products [1] - Understanding the classification system of ETFs is essential for investors to navigate the market effectively and make informed decisions [1] Group 2 - Stock indices can be categorized into four main types: scale indices (broad-based), industry indices, thematic indices, and style factor indices [2] - Scale indices in China are divided based on market and market capitalization, while international indices are categorized only by market [2] - Industry indices reflect the performance of stocks within a specific industry, while thematic indices focus on long-term trends or concepts that span multiple industries [2][4] Group 3 - The classification of ETFs serves as a map for investors, enabling them to quickly find products that meet their allocation needs and systematically review their investment strategies [5] - Style factor indices are further divided into growth, value, dividend, and others, with growth and value being further segmented by market capitalization [4][5] - Investors can match their needs with appropriate products by understanding ETF classifications, which helps clarify the role of each ETF in their investment portfolio [5]