1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report The report conducts a detailed analysis of the convertible bond investment strategies and preferences of different types of investment institutions, aiming to form a handbook for analyzing the behavior of convertible bond investment institutions. It focuses on an overview and the public fund section, considering the significant differences in investment strategies and information disclosure mechanisms between public funds and non - public funds [1][9]. 3. Summary According to Relevant Catalogs 3.1 Convertible Bond Investment Institutions and Analysis Method Overview - **Investor Structure and Proportion**: As of the end of July 2025, public funds and enterprise annuities are the "main forces" in direct convertible bond investment. Public funds hold a significant proportion, with 35.56% of the face value of Shanghai - listed convertible bonds and 33.31% of the market value of Shenzhen - listed convertible bonds. Enterprise annuities are the second - largest investment institutions, holding 18.41% of Shanghai - listed convertible bonds and 13.23% of Shenzhen - listed convertible bonds. Insurance institutions, securities self - operation also occupy important positions. Other professional institutional investors hold a relatively small proportion [10]. - **Changes in Investor Structure**: Compared with the end of 2021, the "influence" of public funds and insurance institutions has increased, while the proportion of enterprise annuities has decreased. The investment proportions of securities self - operation, private funds, and trust institutions have increased, and the proportion of general institutional investors represented by listed company shareholders has significantly decreased [13]. - **Differences in Investment Strategies**: Different types of professional institutional investors have differences in convertible bond investment restrictions, preferences, and investment strategies. Public funds generally have fewer restrictions on convertible bond ratings and focus on relative returns. Pension funds, insurance institutions, and social security funds have clear rating restrictions and focus on absolute returns [19]. - **Analysis Data Sources**: For public funds, quarterly reports can be used to analyze their convertible bond investment preferences. For other investment institutions, the top ten holders of convertible bonds disclosed in the semi - annual and annual reports of convertible bond issuers provide detailed analysis materials [20]. 3.2 What are the Characteristics of Public Funds' Convertible Bond Investment? 3.2.1 Overview of Public Funds' Convertible Bond Holdings - **Scale and Proportion Changes**: Since Q4 2023, the market value and proportion of convertible bonds held by public funds have been slightly decreasing. The number of public funds investing in convertible bonds has decreased overall, but their participation in the convertible bond market has increased [24]. - **Industry Distribution Preference**: As of Q2 2025, public funds significantly over - allocate convertible bonds in industries such as metals, chemicals, transportation, automobiles, agriculture, forestry, animal husbandry, and banking, and under - allocate those in industries such as petrochemicals, steel, construction decoration, public utilities, environmental protection, and power equipment [29]. - **Price, Valuation, and Rating Preferences**: As of the end of Q2 2025, public funds over - allocate convertible bonds in the 120 - 130 yuan range and above 150 yuan, and AA and AA - rated convertible bonds; they under - allocate other convertible bonds [29]. - **Differences in Sub - investor Structure**: Public funds account for about 30% in the overall convertible bond investor structure, but their influence varies in different industries, price ranges, and rating segments [35]. 3.2.2 Differences in Convertible Bond Holdings among Various Funds - **Differences in Convertible Bond Holdings by Fund Type**: Secondary bond funds, the main force in convertible bond allocation, have significantly reduced their convertible bond holdings since Q3 2023. Convertible bond funds and primary bond funds are important holders. The convertible bond positions of convertible bond funds have reached a historical high, while those of secondary bond funds, primary bond funds, and partial - debt hybrid funds have decreased [44][46]. - **Characteristics of Convertible Bond Funds' Holdings**: In Q2 2025, convertible bond funds increased their holdings in industries such as petrochemicals, public utilities, and communications, and decreased their holdings in upstream energy materials and mid - stream manufacturing industries. They stably over - allocate convertible bonds in the 120 - 130 yuan range and under - allocate those in the 100 - 120 yuan range [48][57]. 3.2.3 Characteristics of Convertible Bond Holdings of High - performing Funds - **Scale and Quantity of Convertible Bond Holdings**: Different high - performing funds have different scales and quantities of convertible bond holdings. For example, Fuguo Jiuli Stable Allocation has a relatively concentrated holding, while Huashang Fengli Enhancement has a large number of holdings but a small average holding per bond [73]. - **Industry, Rating, and Price Preferences**: Different high - performing funds have different preferences in terms of industry, rating, and price. For example, Fuguo Jiuli Stable Allocation prefers convertible bonds in the power equipment, banking, and pharmaceutical industries, while Huashang Fengli Enhancement prefers high - priced and manufacturing - related convertible bonds [74]. 3.3 How to Analyze Non - public Fund Convertible Bond Investments? 3.3.1 Starting from the "Top Ten Holders" of Individual Bonds - **Investor Classification**: Convertible bond investors are divided into 11 major categories and 24 sub - categories based on the names of bondholders. The top ten holders' data accounts for about 40% of the convertible bond market, and public funds, pension products, etc. frequently appear in the list [86][87]. - **Data Representativeness**: The data of the top ten holders is representative for analyzing the convertible bond investment preferences and characteristics of various investors. After excluding the "repurchase pledge special account" and "company - related institutions", the data (referred to as "top ten holders 2") can more objectively present the data conclusions [88][89]. 3.3.2 Preliminary Exploration of Non - public Fund Institutions' Convertible Bond Investments - **Industry Distribution of Convertible Bond Holdings**: As of the end of 2024, "private asset management" institutions hold more convertible bonds in the power equipment industry but less in pro - cyclical industries. "Securities self - operation" has a relatively high proportion of holdings in the steel, non - ferrous metals, and power equipment industries. "Insurance" has a relatively dispersed convertible bond portfolio [97]. - **Rating and Price Distribution of Convertible Bond Holdings**: "Private asset management" and "QFII" have a higher tolerance for low - rated convertible bonds. "Insurance" and "securities self - operation" have a relatively high proportion of AAA - rated convertible bonds. In terms of price, "private asset management" has a high proportion of convertible bonds below 100 yuan, while "insurance", "social security funds", and "QFII" mainly hold convertible bonds in the 110 - 120 yuan range [97][98].