The optimization of the ChiNext Comprehensive Index improves the quality of sample stocks and the investability of the index.

The Shenzhen Stock Exchange and its subsidiary Shenzhen Securities Information Company issued a notice on July 11, 2025, revising the compilation plan for the ChiNext Composite Index, which will be officially implemented on July 25, 2025. The revisions include: the introduction of a monthly exclusion mechanism for risk warning stocks, excluding sample stocks that have been issued risk warnings by the exchange. Also, the introduction of an ESG negative exclusion mechanism, excluding sample stocks with a China Securities ESG rating of C or below. According to evaluations, these revisions are advantageous in promoting the quality improvement of sample stocks, while not changing the index positioning and operational characteristics significantly, thus having minimal impact on index products. Currently, the "Chi Series" indexes cover broad-based, thematic, strategic, ESG, and other major types, with tracking product sizes exceeding 200 billion yuan. In the next step, the Shenzhen Stock Exchange will focus on serving national major strategies and key areas in accordance with the unified deployment of the China Securities Regulatory Commission, continuously improving and strengthening the "Chi Series" indexes and index products, enriching the supply of high-quality investment targets, providing diversified choices for medium and long-term capital allocation, and supporting the high-quality development of the capital market.