Shenzhen Stock Exchange optimizes the GEM broad-based index system to enhance index representativeness and investment functionality.

Shenzhen Stock Exchange and its subsidiary Shenzhen Securities Information Company have announced the revision of the compilation plan for the ChiNext Mid Cap 200, ChiNext Small Cap 300, and ChiNext 300 indices, which will be officially implemented on June 15, 2026. After this optimization, a broad-based index system will be built, with the ChiNext Index as the large cap, ChiNext 200 as the mid cap, ChiNext 500 as the small cap, and ChiNext 300 as the large and mid cap, increasing the overall market value coverage to 84%. This will further strengthen the market representativeness and rule systematicity of the index system, enriching the observation and investment dimensions of the ChiNext market. Next, the Shenzhen Stock Exchange will accelerate the construction of a ChiNext index system that fully represents the achievements of ChiNext reform and development, highlighting the investment value of ChiNext, providing diversified broad-based investment targets for the market, guiding factor resources to gather in new high-quality productive areas, and better serving the high-quality development of the real economy. (Shenzhen Stock Exchange)