这三只人工智能指数，究竟有何不同？

Core Viewpoint - The approval of the China Securities Innovation and Entrepreneurship Artificial Intelligence ETF on November 21 marks a significant expansion of investment options in the AI sector, tracking the China Securities Innovation and Entrepreneurship Artificial Intelligence Index, which focuses on high-growth AI companies and aims to mitigate individual stock risks while providing exposure to 50 leading firms [1][12]. Index Compilation Rules - The China Securities Innovation and Entrepreneurship Artificial Intelligence Index targets stocks listed on the Sci-Tech Innovation Board and the Growth Enterprise Market, with a flexible market cap listing time requirement, while the China Securities Artificial Intelligence Index has a narrower selection and fewer constituent stocks [2][3]. - The liquidity requirements differ, with the former requiring an average daily trading volume in the top 90% of the sample space over the past year, compared to 80% for the latter [2][3]. Industry Distribution - The China Securities Innovation and Entrepreneurship Artificial Intelligence Index is heavily concentrated in the communication and semiconductor sectors, with a combined weight of nearly 70%, while the China Securities Artificial Intelligence Index focuses more on semiconductors, which account for 50.6% [4][5]. - The Artificial Intelligence Index has a more balanced industry distribution, with each major sector, including semiconductors and software, representing over 20% [4][5]. Constituent Stocks - The China Securities Innovation and Entrepreneurship Artificial Intelligence Index has the highest concentration, with the top ten stocks accounting for 71.52%, while the China Securities Artificial Intelligence Index follows closely at 70.92%, and the Artificial Intelligence Index is more diversified at 63.29% [7][9]. - Key constituents include Zhongji Xuchuang in the former index, which holds a 20.64% weight, while the latter index features Lanke Technology and Kingsoft as top stocks, reflecting a focus on foundational chips and software applications [7][9]. Historical Performance - The China Securities Innovation and Entrepreneurship Artificial Intelligence Index has shown the best performance, rising 73% year-to-date as of November 24, 2025, compared to 35%-40% for the other two indices, indicating its strong alignment with the AI hardware market [10][11]. - The China Securities Artificial Intelligence Index and the Artificial Intelligence Index exhibit more stable performance with lower volatility, catering to different risk appetites among investors [10][11].