Report Industry Investment Rating The document does not provide the industry investment rating. Core Viewpoints - On September 17, 2025, most sectors in the convertible bond market rose, and the valuation increased compared to the previous day. The CSI Convertible Bond Index rose 0.57%, and the trading sentiment in the convertible bond market heated up [1]. - The convertible bond price center increased, with the proportion of high - price bonds rising. The valuation also increased, with the conversion premium rate and overall weighted parity showing certain changes [2]. - In the stock market, more than half of the underlying stock sectors rose. The top three rising sectors in the A - share market were power equipment, automobiles, and household appliances, while the top three falling sectors were agriculture, forestry, animal husbandry and fishery, commercial and retail, and social services. In the convertible bond market, the top three rising sectors were light manufacturing, power equipment, and electronics, and the top three falling sectors were transportation, beauty care, and household appliances [3]. Summaries by Directory Market Main Index Performance - The CSI Convertible Bond Index closed at 479.44, up 0.57% daily, 0.42% weekly, 1.79% monthly, and 15.65% since the beginning of 2025. The Shanghai Composite Index closed at 3876.34, up 0.37% daily, 1.81% weekly, 5.72% monthly, and 15.65% since the beginning of 2025. The Shenzhen Component Index closed at 13215.46, up 1.16% daily, 5.63% weekly, 15.40% monthly, and 26.89% since the beginning of 2025. The ChiNext Index closed at 3147.35, up 1.95% daily, 9.74% weekly, 27.44% monthly, and 46.96% since the beginning of 2025 [7]. - In terms of market style, large - cap growth stocks were relatively dominant. Large - cap growth stocks rose 1.15%, large - cap value stocks fell 0.03%, mid - cap growth stocks rose 0.98%, mid - cap value stocks rose 1.02%, small - cap growth stocks rose 1.07%, and small - cap value stocks rose 1.15% [1][8]. Market Fund Performance - The trading volume in the convertible bond market was 80.992 billion yuan, a 3.63% increase compared to the previous day, and the total trading volume of the Wind All - A Index was 2402.924 billion yuan, a 1.51% increase compared to the previous day. The net out - flow of the main funds in the Shanghai and Shenzhen stock markets was 32.839 billion yuan, and the yield of the 10 - year Treasury bond decreased by 1.78bp to 1.83% [1]. Convertible Bond Valuation - The weighted average closing price of convertible bonds was 131.07 yuan, a 0.69% increase compared to the previous day. The closing price of equity - biased convertible bonds was 183.62 yuan, up 7.66%; the closing price of bond - biased convertible bonds was 118.21 yuan, up 0.24%; and the closing price of balanced convertible bonds was 126.68 yuan, up 0.73% [2]. - The conversion premium rate of the 100 - yuan parity fitting was 29.21%, a 0.38pct increase compared to the previous day. The overall weighted parity was 102.13 yuan, a 0.38% increase compared to the previous day. The conversion premium rate of equity - biased convertible bonds was 11.14%, up 2.39pct; the conversion premium rate of bond - biased convertible bonds was 83.79%, up 0.43pct; and the conversion premium rate of balanced convertible bonds was 21.80%, down 0.47pct [2]. Industry Rotation - In the A - share market, the top three rising sectors were power equipment (+2.55%), automobiles (+2.05%), and household appliances (+1.64%); the top three falling sectors were agriculture, forestry, animal husbandry and fishery (-1.02%), commercial and retail (-0.98%), and social services (-0.86%). In the convertible bond market, the top three rising sectors were light manufacturing (+2.70%), power equipment (+2.05%), and electronics (+1.83%); the top three falling sectors were transportation (-0.28%), beauty care (-0.19%), and household appliances (-0.12%) [3]. - In terms of different sectors: - Closing price: The large - cycle sector rose 0.66%, the manufacturing sector rose 1.91%, the technology sector rose 1.36%, the large - consumption sector rose 0.18%, and the large - finance sector rose 0.55% [3]. - Conversion premium rate: The large - cycle sector rose 0.5pct, the manufacturing sector rose 0.034pct, the technology sector rose 0.49pct, the large - consumption sector fell 0.1pct, and the large - finance sector rose 0.32pct [3]. - Conversion value: The large - cycle sector rose 0.44%, the manufacturing sector rose 1.72%, the technology sector rose 1.01%, the large - consumption sector fell 0.46%, and the large - finance sector rose 0.31% [3]. - Pure bond premium rate: The large - cycle sector rose 0.8pct, the manufacturing sector rose 2.7pct, the technology sector rose 2.0pct, the large - consumption sector rose 0.19pct, and the large - finance sector rose 0.63pct [4].

Group 1 - The report suggests increasing allocation to mid-cap growth stocks, focusing on TMT (Technology, Media, and Telecommunications) and financial sectors, including semiconductors, automotive, photovoltaic equipment, banks, coal, non-bank financials, electronics, computers, and textiles [3][47] - The industry rotation model for August highlights a preference for sectors with strong fundamental factors, particularly semiconductors and electronics, as well as the financial sector, due to their high consistency in funding and expectations [3][47] - The report indicates that the overall market momentum effect is weakening, and the performance of sectors related to the anti-involution theme, such as photovoltaic equipment and coal, has shown a decline in relative scores despite their absolute scores remaining high [3][47] Group 2 - The report notes that the industry ETF saw a significant net inflow of 46.438 billion yuan, while broad-based ETFs experienced a net outflow of 93 billion yuan, indicating a shift in investor preference towards sector-specific investments [6][27] - The performance of passive index funds has been generally positive, with several sectors, including steel, construction materials, and medical devices, showing gains exceeding 10% due to various catalysts [22][27] - The report emphasizes that the mid-cap growth strategy remains favored, with the CSI 500 index being a core focus for 2025, reflecting a return to mid-cap dominance after alternating strategies in previous years [5][65] Group 3 - The report highlights that the industry rotation model has consistently outperformed major benchmark indices, achieving a monthly win rate of 85.71% since 2025, indicating its robustness in various market conditions [5][64] - The model's design incorporates a bottom-up approach to factor selection, focusing on stable factors with low drawdown risks, which enhances its effectiveness in capturing market dynamics [63][64] - The report also mentions that the recent inflow of overseas ETF funds into A-shares reflects a warming attitude from foreign investors, particularly in sectors like electronics and banking, aligning with the model's findings [41][64]

Core Viewpoint - The recent performance of the A-share market has been lively, with the Shanghai Composite Index reaching a new high since November last year, indicating a favorable environment for growth-oriented investments, particularly in high-volatility sectors like the ChiNext [1] Group 1: Index Comparison - The ChiNext 200 Index focuses on small and medium-sized enterprises within the ChiNext board, while the Sci-Tech 50 Index gathers leading companies from the Sci-Tech board [1][2] - The ChiNext 200 Index consists of 200 stocks, whereas the Sci-Tech 50 Index includes only 50 stocks, highlighting a broader selection in the former [1][2] - The median free float market capitalization of the ChiNext 200 is 9.162 billion, significantly lower than the 21.162 billion of the Sci-Tech 50, indicating a focus on smaller companies [1][2] Group 2: Performance Analysis - Since the end of 2019, the ChiNext 200 Index has achieved a cumulative increase of 44.38%, contrasting with a decline of 1.69% for the Sci-Tech 50 during the same period [2] - The ChiNext 200 Index has outperformed both the ChiNext Index and the ChiNext 50 in terms of cumulative growth and annualized returns since its inception, with a cumulative increase of 258% and an annualized return of 10.71% [4][5] - The ChiNext 200's focus on mid-cap growth companies allows it to capture more significant growth potential compared to the larger-cap stocks in the ChiNext Index and ChiNext 50 [6]