Core Viewpoint - The North China Securities 50 Index is set for its third constituent adjustment of the year on September 15, with two high-quality companies expected to be included since their listing [1] Group 1 - The upcoming adjustment of the North China Securities 50 Index is anticipated to attract attention due to the inclusion of notable companies [1]

Core Insights - The report predicts adjustments to the North Exchange 50 Index on June 16, 2025, with a review cutoff date of May 16, 2025 [3] - The predicted stocks to be added to the index include Lierda, Tongguan Mining Construction, Wanda Bearings, Juxing Technology, and Yinuowei, while stocks to be removed include Guangsha Environmental Energy, Kangle Health, Tianfang Biao, Tongxiang Technology, and Kaide Quartz [3][4] - Historical data shows that stocks added to the index have an 80% probability of outperforming the index in the five trading days leading up to the adjustment, with an average excess return of 4.7%, while stocks removed have an 80% probability of underperforming, with an average excess return of -2.4% [3][6] Stock Adjustments - The average daily trading volume and market capitalization for the past six months were used to determine the adjustments, with specific figures for each stock listed [4][5] - The stocks being added have varying average daily trading volumes, with Lierda at 22,484 thousand CNY and a market cap of 5.6 billion CNY, while stocks being removed have lower trading volumes, such as Guangsha Environmental Energy at 4,710 thousand CNY and a market cap of 2.64 billion CNY [4] Impact Coefficients - The report calculates the impact coefficients for the stocks being added and removed from the index, with Tongguan Mining Construction having the highest impact coefficient of 1.86 among the new additions, and Kangle Health having the highest at 7.36 among the removals [3][9] - The impact coefficients are derived from the ratio of stock weight to average daily trading volume, indicating the potential influence of these stocks on the index [3][9]