Core Insights - The article highlights the recent movements of social security funds in the stock market, revealing that 15 new stocks were added to their portfolio in the second quarter [1] - A total of 286 companies have released their semi-annual reports, and the top ten circulating shareholders' data indicates the actions of institutional investors [1] Summary by Category Social Security Fund Holdings - Social security funds appeared in 43 stocks, with 15 new entries, 10 increased holdings, 11 reduced holdings, and 7 stocks with unchanged holdings [1] - The stock with the highest number of social security fund entries is Su Shi Testing, with three funds listed among the top ten shareholders, holding a total of 14.86 million shares, accounting for 2.94% of circulating shares [1] New Stocks and Holdings - Among the newly added stocks, the highest holding percentage by social security funds is in Zhong Chumei, with a holding ratio of 3.45%, followed by Beiding Co., Ltd. at 3.16% [1] - The stock with the largest number of shares held by social security funds is Satellite Chemical, with 20.17 million shares, followed by Su Shi Testing and Zhongyuan Expressway with 14.86 million shares and 13 million shares, respectively [1] Performance of New Stocks - In terms of performance, 14 out of the new stocks reported year-on-year net profit growth, with the highest increase seen in Xin Qiang Lian, achieving a net profit of 399.61 million yuan, a year-on-year increase of 496.60% [2] - Other notable companies with significant net profit growth include Ta Pai Group and Guo Mai Culture, with increases of 92.47% and 80.38%, respectively [2] New Stock List - A detailed list of new stocks includes: - Zhong Chumei: 320,000 shares, 3.45% [2] - Beiding Co., Ltd.: 1,000,000 shares, 3.16% [2] - Su Shi Testing: 1,486,200 shares, 2.94% [2] - Xin Qiang Lian: 555,560 shares, 2.08% [2] - Other companies include Chunfeng Power, Guo Mai Culture, Ta Pai Group, and more, with varying shareholdings and industry classifications [2]