Core Insights - The professional services sector experienced a rise of 1.89% on August 28, with Steel Research Nack leading the gains [1] - The Shanghai Composite Index closed at 3843.6, up 1.14%, while the Shenzhen Component Index closed at 12571.37, up 2.25% [1] Stock Performance Summary - Steel Research Nack (300797) saw a significant increase of 20.00%, closing at 18.60 with a trading volume of 402,600 shares and a transaction value of 707 million [1] - Other notable performers included: - Lanshan Co. (600826) with a 6.41% increase, closing at 11.96 [1] - Shicun Testing (301228) with a 5.20% increase, closing at 27.72 [1] - Su Shi Testing (300416) with a 5.19% increase, closing at 19.05 [1] Capital Flow Analysis - The professional services sector saw a net inflow of 28.86 million in main funds, while retail funds experienced a net outflow of 17.51 million [2] - Key stocks in terms of capital flow included: - Steel Research Nack (300797) with a net inflow of 133 million from main funds [3] - Su Shi Testing (300416) with a net inflow of 74.18 million from main funds [3] - Lanshan Co. (600826) with a net inflow of 69.47 million from main funds [3]

Core Insights - The article highlights the recent movements of social security funds in the stock market, revealing that 72 new stocks were added to their portfolio in the second quarter [1][2]. Summary by Categories Social Security Fund Holdings - A total of 3,077 companies have disclosed their semi-annual reports, with social security funds appearing in 313 stocks. In Q2, they initiated positions in 72 stocks, increased holdings in 79 stocks, reduced holdings in 102 stocks, and maintained their positions in 60 stocks [1]. - The stock with the highest number of social security fund holders among new positions is Su Shiyan, with three funds listed among the top ten shareholders, holding a total of 14.86 million shares, accounting for 2.94% of the circulating shares [1]. New Stock Positions - The stock with the highest proportion of social security fund holdings among new positions is Bai Ao Intelligent, with a holding ratio of 7.23%. Other notable stocks include Zhong Chumei at 3.45%, and Bei Ding Co., Su Shiyan, and Stanley also having significant holdings [1]. - The stock with the largest number of shares held by social security funds among new positions is Hualing Steel, with 48.08 million shares held, followed by Huafa Shares and Stanley with 25.89 million shares and 21.99 million shares, respectively [1]. Performance Metrics - Among the new stocks, 44 companies reported year-on-year net profit growth, with the highest increase seen in Gao Lan Shares, which achieved a net profit of 22.93 million yuan, a staggering increase of 1,438.57% year-on-year. Other companies with significant profit growth include Shengnong Development and Xin Qiang Lian, with increases of 791.93% and 496.60%, respectively [2]. - Since July, the average increase for the new stocks held by social security funds is 20.22%, outperforming the Shanghai Composite Index. The best-performing stock is Dayuan Pump Industry, with a cumulative increase of 128.49%, followed by Guomai Culture and Gao Lan Shares, which increased by 87.48% and 79.78%, respectively. The stock with the largest decline is Dadi Ocean, down 6.41% [2].

Market Performance - The professional services sector increased by 2.05% on August 25, with Su Shi Testing leading the gains [1] - The Shanghai Composite Index closed at 3883.56, up 1.51%, while the Shenzhen Component Index closed at 12441.07, up 2.26% [1] Top Gainers in Professional Services - Su Shi Testing (300416) closed at 19.14, up 10.64% with a trading volume of 596,300 shares and a transaction value of 1.125 billion yuan [1] - Zhonggang Tianyuan (002057) closed at 11.45, up 9.99% with a trading volume of 545,700 shares and a transaction value of 612 million yuan [1] - Xince Standard (300938) closed at 25.80, up 7.14% with a trading volume of 184,400 shares and a transaction value of 461 million yuan [1] Other Notable Stocks - Huace Testing (300012) closed at 66.ET, up 6.88% with a trading volume of 1,123,300 shares [1] - Lingdian Youshu (301169) closed at 50.97, up 3.81% with a trading volume of 46,700 shares [1] - Guangdong Jianke (301632) closed at 37.84, up 2.41% with a trading volume of 206,400 shares [1] Market Capital Flow - The professional services sector saw a net inflow of 171 million yuan from institutional investors, while retail investors experienced a net outflow of 35.82 million yuan [2] - The main stocks with significant net inflows included Zhonggang Tianyuan and Huace Testing, while Su Shi Testing and Xince Standard saw net outflows from retail investors [3]

Group 1 - The satellite internet index experienced a significant increase, with the satellite industry ETF (159218) rising by 2.03% as of 13:31 on August 25 [1] - Key component stocks such as Changjiang Communication, Xinke Mobile-U, China Satellite, Tianyin Electromechanical, and Su Shi Testing showed notable gains [1] - Trading activity intensified, with a turnover rate of 28.03% and a transaction volume exceeding 21 million [1] Group 2 - Relevant authorities are expected to issue satellite internet licenses soon, marking a significant step towards commercial operations in China's satellite internet sector [1] - A senior technical expert in the satellite internet field indicated that the issuance of licenses signifies the beginning of commercial operations in this area [1]

Core Insights - The article highlights the recent movements of social security funds in the stock market, revealing that 41 new stocks were added to their portfolio in the second quarter, with a total of 199 stocks being held by these funds [1][2]. Group 1: Social Security Fund Holdings - A total of 1,692 companies have disclosed their semi-annual reports, with social security funds appearing in the top ten shareholders of 199 stocks [1]. - The most notable new holdings include Su Shi Testing, where three social security funds are listed among the top ten shareholders, holding a combined 14.86 million shares, representing 2.94% of the circulating shares [1]. - The stock with the highest proportion held by social security funds among new entries is Zhong Chumei, with a holding ratio of 3.45%, followed by Beiding Co. at 3.16% [1]. Group 2: Performance of New Holdings - Among the new stocks, 29 companies reported a year-on-year increase in net profit, with the highest growth seen in Gao Lan Co., which achieved a net profit of 22.93 million yuan, marking a 1,438.57% increase [2]. - The average increase in the stock prices of new holdings since July is 21.74%, outperforming the Shanghai Composite Index [2]. - The best-performing stock among the new entries is Guomai Culture, with a cumulative increase of 91.47%, followed by Gao Lan Co. and Huicheng Vacuum, which rose by 80.67% and 59.55%, respectively [2].

Group 1 - The core viewpoint of the article highlights the recent movements of social security funds in the A-share market, revealing that they have entered the top ten circulating shareholders of 71 new stocks in the second quarter of 2025 [1] - Su Shi Testing has the highest number of new social security fund holdings, with 3 new holdings, while Shanghai Jahwa and Xin Qiang Lian each have 2 new holdings [1] - The article provides a detailed list of companies that have seen new social security fund investments, including their respective shareholding numbers, quantities, and market values [2][3][4][5] Group 2 - Specific companies mentioned include Su Shi Testing with 1,486.20 thousand shares valued at 213 million yuan, Shanghai Jahwa with 1,150.51 thousand shares valued at 242 million yuan, and Xin Qiang Lian with 555.56 thousand shares valued at 199 million yuan [2][3] - Other companies with new social security fund holdings include Hengdian East Magnetic, Nuofushin, and Baichu Electronics, each with 1 new holding, along with their respective share quantities and market values [2][3][4] - The article lists a total of 71 companies that have received new investments from social security funds, indicating a diverse range of industries from agriculture to electronics and pharmaceuticals [2][3][4][5]

Market Overview - On August 22, the professional services sector rose by 0.58% compared to the previous trading day, with Su Shi Testing leading the gains [1] - The Shanghai Composite Index closed at 3825.76, up 1.45%, while the Shenzhen Component Index closed at 12166.06, up 2.07% [1] Stock Performance - Su Shi Testing (300416) closed at 17.30, with a gain of 2.67% and a trading volume of 334,200 shares, amounting to a transaction value of 578 million yuan [1] - Other notable performers included: - Electric Science Institute (300215) at 6.87, up 2.54% with a trading volume of 444,100 shares [1] - Shengke Nano (688757) at 34.02, up 2.50% with a trading volume of 43,100 shares [1] - Ancar Testing (300572) at 27.99, up 2.38% with a trading volume of 160,400 shares [1] Fund Flow Analysis - The professional services sector experienced a net outflow of 77.29 million yuan from institutional investors, while retail investors saw a net inflow of 36.84 million yuan [2] - Notable net inflows from retail investors included: - Su Shi Testing with a net inflow of 69.16 million yuan from institutional investors [3] - Shiheng Testing (301228) with a net inflow of 24.41 million yuan from institutional investors [3] Individual Stock Fund Flow - Su Shi Testing had a significant net inflow of 69.16 million yuan from institutional investors, but a net outflow of 82.85 million yuan from retail investors [3] - Other stocks with notable fund flows included: - Ancar Testing with a net inflow of 11.03 million yuan from institutional investors [3] - Electric Science Institute with a net inflow of 8.81 million yuan from institutional investors [3]

半年报密集披露，机构最新持仓动向曝光!二季度社保基金新进股共有34只。 目前共有1263家公司已经公布半年报，前十大流通股东数据透露出机构行踪。证券时报·数据宝统计显 示，社保基金共现身164只股，调仓动向方面，二季度社保基金新进34股、增持44股、减持52股，社保 基金持股量保持不变的有34股。 社保基金新开仓股票中，从前十大流通股东名单中社保基金家数来看，社保基金家数最多的是苏试试 验，共有3家社保基金出现在前十大流通股东名单中，即全国社保基金六零二组合、全国社保基金六零 一组合、全国社保基金五零二组合，分别位列公司第5大、第7大、第10大流通股东，持股量合计为 1486.20万股，占流通股比例为2.94%。 从持股比例看，新进股中社保基金持有比例最多的是中触媒，持股量占流通股比例为3.45%，其次是北 鼎股份，社保基金持股比例为3.16%，持股比例居前的还有苏试试验、史丹利、新强联等。 从持股量统计，社保基金新进的个股中，持股量最多的是华菱钢铁，共持有4807.94万股，史丹利、卫 星化学等紧随其后，持股量分别为2199.99万股、2016.93万股。 业绩方面，社保基金新进股中，半年报净利润同比增长的 ...

金融界消息 截至2025年8月19日收盘，苏试试验（300416）报收于16.71元，下跌1.18%，换手率 4.12%，成交量20.82万手，成交金额3.50亿元。 资金流向方面，今日主力资金净流出2157.15万元，占比成交额6.16%。其中，超大单净流出1157.35万 元、占成交额3.31%，大单净流出999.81万元、占成交额2.86%，中单净流出流出1503.63万元、占成交 额4.3%，小单净流入3660.78万元、占成交额10.46%。 天眼查商业履历信息显示，苏州苏试试验集团股份有限公司，成立于2007年，位于苏州市，是一家以从 事研究和试验发展为主的企业。企业注册资本50854.7806万人民币，实缴资本20608万人民币。公司法 定代表人为钟琼华。 通过天眼查大数据分析，苏州苏试试验集团股份有限公司共对外投资了26家企业，参与招投标项目1260 次，知识产权方面有商标信息23条，专利信息530条，此外企业还拥有行政许可14个。 来源：金融界 苏试试验最新一期业绩显示，截至2025中报，公司营业总收入9.91亿元、同比增长8.09%，归属净利润 1.17亿元，同比增长14.18%，扣非净利 ...

Investment Rating - The industry is rated as "stronger than the market" with an expected relative increase of over 10% compared to the market index in the next six months [38]. Core Insights - The heavy holding ratio for the social service industry in Q2 2025 is 0.09%, a decrease of 0.03 percentage points from the previous quarter, ranking 30th among 31 first-level industries, indicating a position at the bottom of the industry [11][35]. - The current heavy holding ratio is significantly below the five-year historical average of 0.49%, suggesting substantial room for rebound [11][35]. - The education sector shows a rebound in interest, while the hotel and restaurant sector remains at a low holding ratio [18][35]. - The implementation and optimization of the national visa-free policy is expected to continue boosting the tourism market, alongside new opportunities arising from the establishment of duty-free shops [35]. Summary by Sections Heavy Holding Ratio Analysis - In Q2 2025, there are 344 funds heavily invested in the social service industry, a decrease of 59 funds from the previous quarter, with a total market value of 6.225 billion yuan, down by 1.786 billion yuan [11][35]. - The heavy holding ratio for the hotel and restaurant sector is at 0.02%, down 0.01 percentage points, while the tourism and scenic area sector is at 0.03%, showing a slight decline [18][35]. Sector Performance - The professional services sector has seen a decrease in heavy holding ratio to 0.03%, while the education sector has slightly increased to 0.01% [18][35]. - The hotel and restaurant sector's heavy holding ratio has been declining since reaching a peak in Q2 2022 [18][35]. Individual Stock Performance - The top ten stocks in the social service sector have a combined heavy holding ratio of 0.072%, down 0.03 percentage points from Q1 2025 [27][28]. - Notable increases in heavy holding ratios were observed for stocks such as Dou Shen Education and Changbai Mountain, while significant decreases were noted for Huace Detection and Su Shi Testing [30][31].