1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - The investment in secondary and perpetual bonds (referred to as "two - eternal bonds") in the current bond market has reached the fourth stage. Since 2024, two - eternal bonds have become amplifiers of interest rate fluctuations. The report focuses on analyzing the institutional behavior patterns of two - eternal bonds and attempts to discover effective signals [2][15]. - Different types of institutions have different allocation patterns for two - eternal bonds. For example, banks act as stabilizers in the bond market, while securities firms have high - frequency trading, funds are the main buyers, and other institutions have their own preferences [5][6]. - It is difficult to use the institutional behavior of two - eternal bonds to predict interest rate trends, but it can help investors understand the market's expectation of whether interest rates can continue to decline. The report constructs investment sentiment measurement indicators for the trading desks of two - eternal bonds to assist investors in observation [7][8]. 3. Summary According to the Table of Contents 3.1 Why Focus on the Institutional Behavior of Two - eternal Bonds? - The investment in two - eternal bonds has gone through four stages. Since 2024, they have become amplifiers of interest rate fluctuations. The report aims to analyze their institutional behavior patterns and find effective signals [2][15]. - The report discusses three types of bonds (secondary capital bonds, perpetual bonds, and ordinary financial bonds) and six types of investors (banks, securities firms, funds, wealth management, insurance, and others). Different investors' term preferences are mainly concentrated in 1Y, 3Y, and 5Y, and the trading volume of two - eternal bonds over 5Y declines significantly [3][15]. 3.2 Institutional Behavior Patterns of Two - eternal Bonds 3.2.1 Banks Still Act as Stabilizers in the Bond Market - Since the second half of 2024, commercial banks have increased the trading volume of 1Y/3Y secondary capital bonds and continuously net - sold 5Y secondary capital bonds. For perpetual bonds, the trading volume of 1Y/3Y is small, and 5Y is significantly net - sold. For ordinary financial bonds, the trading volume in the 3Y term is the largest, and they are mostly net - sold, except for increasing allocation during bond market corrections [5][16]. 3.2.2 Securities Firms Have High - Frequency Band - trading of Two - eternal Bonds - Securities firms show obvious trading - desk characteristics in the trading of two - eternal bonds, frequently switching between buying and selling with a relatively large scale. They have a high preference for 1Y/3Y/5Y two - eternal bonds and ordinary financial bonds [5][21]. 3.2.3 Funds Are the Main Buyers of Two - eternal Bonds - Funds tend to make trend - based allocations to two - eternal bonds. They continuously buy during bull markets and sell significantly during bear markets, driving market trends. In recent years, with the overall decline in the interest rates of two - eternal bonds, funds have shown a trend of increasing allocation [5][30]. 3.2.4 The Institutional Behavior Characteristics of Wealth Management in Two - eternal Bonds Are Diverse - In most periods, the trading characteristics of wealth management in two - eternal bonds are not obvious, showing an overall allocation trend. At some points, they take profits during bull markets, buy during bear markets, and continue to buy during volatile markets [5][37]. 3.2.5 Insurance Also Acts as a Stabilizer in the Bond Market - Insurance institutions generally net - sell two - eternal bonds but increase allocation during market corrections, acting as stabilizers [5][46]. 3.2.6 Other Types of Institutions Prefer to Continuously Allocate 5Y Two - eternal Bonds - Other types of institutions have a greater preference for continuously allocating 5Y two - eternal bonds [6][52]. 3.3 How to Use the Institutional Behavior Patterns of Two - eternal Bonds? - It is relatively difficult to use the institutional behavior of two - eternal bonds to predict interest rate trends due to factors such as the synchronicity of institutional behavior indicators, less trading data, and data delays [7][61]. - However, the institutional behavior of two - eternal bonds can help investors understand the market's expectation of whether interest rates can continue to decline. When investors expect interest rates to continue to decline, the trading desks of two - eternal bonds will continue to buy, compressing the spread. When the expectation weakens, the buying power will decrease [7][61]. - The report constructs investment sentiment measurement indicators for the trading desks of two - eternal bonds, which are the smoothed overall purchases of funds and securities firms in 5Y secondary capital bonds and 5Y perpetual bonds. When these indicators decline significantly and approach zero, it indicates that the trading desks are less optimistic about buying two - eternal bonds for capital gains. This year, there were two such time points in January 15th and late April, corresponding to subsequent bond market corrections or fluctuations [8][62].