Group 1 - The horse racing concept index rose by 0.82%, ranking 7th among concept sectors, with four stocks increasing in value, including *ST Zhengping which hit the daily limit, and Xinhua Du and Luoniushan showing gains of 2.78% and 0.31% respectively [1] - The main capital outflow from the horse racing concept sector amounted to 135 million yuan, with Xinhua Du receiving the highest net inflow of 8.26 million yuan [2][3] - The net inflow ratios for stocks like Zhujiang Piano and Xinhua Du were 10.77% and 1.66% respectively, indicating strong interest in these stocks despite the overall sector's outflow [3] Group 2 - The horse racing concept was among the top-performing sectors today, with a notable increase compared to other sectors such as the reducer and humanoid robot concepts, which saw declines of 2.68% and 2.17% respectively [2] - The trading volume and turnover rates varied significantly among the stocks in the horse racing concept, with *ST Zhengping showing a high turnover rate of 20.94% despite a negative net capital flow [3]

Group 1 - The core viewpoint of the article emphasizes the importance of selecting valuable research reports and understanding market dynamics to seize investment opportunities [1] - Excavator sales have halved, yet the company achieved a historical high in profits, indicating that traditional business provides a safety net while linear drivers enhance winning rates, positioning this leading company as a rare blue-chip stock [1] - The magnesium-aluminum price ratio has entered a cost-effective range, with the amount of magnesium used in electric vehicles doubling to 90 kg, and additional demand from two-wheeled vehicles and robots expected to reach 174,000 tons, benefiting three leading companies in a market projected to grow by billions [1]

Core Viewpoint - The company, Jiuqi Co., Ltd., has shown significant growth in revenue and profit, benefiting from its diverse product offerings and favorable exchange rates, particularly in the context of cross-border e-commerce and the sports industry [2][3][7]. Company Overview - Jiuqi Co., Ltd. is primarily engaged in the design, research, production, and sales of bicycles and related products, with a comprehensive product system that includes various types of bicycles and accessories [2][7]. - The company has a strong presence in the global market, exporting to over 80 countries and regions across five continents, with a notable brand recognition in North America, South America, and Southeast Asia [2][3][7]. - As of August 20, the company had 11,500 shareholders, a decrease of 7.56% from the previous period, with an average of 10,165 circulating shares per shareholder, an increase of 8.17% [7]. Financial Performance - For the first half of 2025, Jiuqi Co., Ltd. reported a revenue of 1.499 billion yuan, representing a year-on-year growth of 39.22%, and a net profit attributable to shareholders of 87.1 million yuan, up 55.42% year-on-year [7]. - The company's overseas revenue accounted for 96.44% of total revenue, benefiting from the depreciation of the Chinese yuan [3][7]. - The company has distributed a total of 400 million yuan in dividends since its A-share listing, with 198 million yuan distributed over the past three years [8]. Market Activity - On September 2, Jiuqi Co., Ltd. saw a stock price increase of 4.27%, with a trading volume of 373 million yuan and a turnover rate of 16.07%, bringing the total market capitalization to 4.72 billion yuan [1]. - The stock has shown no clear trend in major capital inflows, with a net inflow of 18.12 million yuan on the day, ranking first in its industry [4][5].

- Model name: Broad-based index rotation strategy; Model construction idea: Using the weekly change rate of the total heat of different broad-based indices to construct a rotation strategy; Model construction process: Calculate the weekly heat change rate of different groups of stocks and smooth it using MA2. On the last trading day of each week, buy the broad-based index with the highest total heat change rate MA2. If the highest change rate is in the "other" group, stay in cash. The strategy's net value is shown in the report. The formula is: $ \text{Heat Change Rate MA2} = \frac{\sum_{i=1}^{n} \text{Heat Change Rate}_i}{n} $ where $ n $ is the number of weeks. The strategy's annualized return since 2017 is 8.74%, with a maximum drawdown of 23.5%. The return since 2025 is 8.13%[14][16][17] - Model name: Broad-based index heat; Model construction idea: Aggregate the total heat of component stocks in broad-based indices; Model construction process: Group the entire A-share sample according to the component stocks of the CSI 300, CSI 500, CSI 1000, CSI 2000, and "other" groups. Sum the total heat indicators of the component stocks in each group to obtain the heat of the four mainstream broad-based indices and the heat of stocks not included in these indices ("other" group). The formula is: $ \text{Total Heat} = \sum_{i=1}^{n} (\text{Browse Count}_i + \text{Self-selection Count}_i + \text{Click Count}_i) $ where $ n $ is the number of stocks in the group. The heat is normalized by dividing by the total market heat and multiplying by 10000, with a range of [0,10000][9][12] - Factor name: Total heat indicator; Factor construction idea: Aggregate the browsing, self-selection, and click counts of stocks; Factor construction process: Define the total heat indicator as the sum of the browsing, self-selection, and click counts of a stock, normalized by its proportion in the entire market on the same day, and multiplied by 10000. The formula is: $ \text{Total Heat} = \frac{(\text{Browse Count} + \text{Self-selection Count} + \text{Click Count})}{\text{Total Market Heat}} \times 10000 $ with a range of [0,10000][8] - Factor name: Concept heat; Factor construction idea: Aggregate the total heat of component stocks in different concepts; Factor construction process: Calculate the weekly heat change rate of each concept and smooth it using MA2. Construct two simple portfolios: select the top 5 concepts with the highest heat change rate each week, exclude the smallest 20% of stocks by market cap, and equally hold the top 10 stocks with the highest total heat in each concept to form the heat TOP portfolio. Similarly, select the bottom 10 stocks with the lowest total heat in each concept to form the BOTTOM portfolio. The formula is: $ \text{Heat Change Rate MA2} = \frac{\sum_{i=1}^{n} \text{Heat Change Rate}_i}{n} $ where $ n $ is the number of weeks. The BOTTOM portfolio's annualized return is 15.71%, with a maximum drawdown of 28.89%. The return since 2025 is 18.35%[28][30][32][33] Model backtest results - Broad-based index rotation strategy, annualized return 8.74%, maximum drawdown 23.5%, return since 2025 8.13%[17] - Broad-based index heat, CSI 300 heat change rate increased by 5.25%, CSI 500 heat change rate decreased by 13.72%[17] Factor backtest results - Total heat indicator, normalized range [0,10000][8] - Concept heat, BOTTOM portfolio annualized return 15.71%, maximum drawdown 28.89%, return since 2025 18.35%[33]