Core Viewpoint - The article presents an index map that includes various commonly used stock indices, their codes, selection rules, industry distribution, average and median market capitalization of constituent stocks, and the number of constituent stocks, which will be regularly updated for easy reference [1][4]. Group 1: Index Overview - The index map includes several categories of stock indices such as broad-based indices, strategy indices, industry indices, thematic indices, and overseas indices [4]. - Key broad-based indices in the A-share market include the CSI series indices like CSI 300, CSI 500, CSI 800, and CSI All Share, which are selected based on the market capitalization of listed companies and cover stocks from various industries [8]. Group 2: Index Details - The CSI 300 index consists of the 300 largest and most liquid A-shares listed on the Shanghai and Shenzhen stock exchanges, with an average market capitalization of 177,899 million and a median of 851.80 million [3]. - The CSI 500 index includes 500 stocks ranked from 301 to 800 in terms of market capitalization, with an average market capitalization of 263.02 million and a median of 241.01 million [3]. - The CSI 800 index covers 800 stocks, while the CSI 1000 index includes 1000 stocks, with respective average market capitalizations of 831.51 million and 121.62 million [3]. - The Shanghai Stock Exchange 50 index is composed of the 50 most representative stocks from the Shanghai market, reflecting the performance of leading companies, with an average market capitalization of 5,084.82 million [3]. - The Shenzhen Component Index selects 500 large and liquid companies from the Shenzhen market, with an average market capitalization of 430.20 million [3]. Group 3: Industry and Thematic Indices - The article lists various thematic indices such as the Consumption Index, which selects major consumer industry stocks from the CSI 800 index, with an average market capitalization of 1,255.44 million [6]. - The Healthcare Index includes 100 large-cap stocks in the healthcare sector, with an average market capitalization of 399.02 million [6]. - The Technology Index reflects the performance of 50 leading technology companies, with an average market capitalization of 439.71 million [6].

Market Overview - The A-share market saw most major indices decline today, with the Shanghai Composite Index down 0.20% closing at 3288.41 points, the Shenzhen Component Index down 0.62% at 9855.20 points, and the ChiNext Index down 0.65% at 1934.46 points [1] - Overall, there were 1215 stocks that rose while 4105 stocks fell, with a total trading volume of 10563 billion yuan, a decrease of approximately 573 billion yuan compared to the previous trading day [1] Industry Performance - Among the Shenwan first-level industries, only the banking, steel, public utilities, home appliances, and media sectors saw gains, with increases of 0.98%, 0.53%, 0.39%, 0.17%, and 0.02% respectively [1] - The real estate, comprehensive, social services, automotive, and building materials sectors experienced the largest declines, with drops of 3.66%, 2.52%, 2.19%, 1.59%, and 1.57% respectively [1] Sector Highlights - The top-performing concept sectors today included banking, pharmaceutical commerce, consecutive boards, online gaming, gold and jewelry, rare earths, electricity, IDC, virtual reality, industrial metals, innovative drugs, semiconductors, and blue-chip stocks [2][11] - Conversely, the dairy, high send-off, and generic drug sectors experienced pullbacks [11]