Report Industry Investment Rating No relevant content provided. Core Viewpoints of the Report - The expansion rhythm of index constituent bonds is significantly slower than the growth rate of credit bond ETF scale. Amid the bond - snatching market, low - valuation transactions of constituent bonds emerge. There are three aspects to consider: "far", "发", and "扩". "Far" involves the conduction mechanism of corporate bond - China Securities - China Bond interest rates; "发" means that buying in the primary market can still be profitable during the bond - snatching period; "扩" refers to the analysis of constituent bonds benefiting from the issuance and expansion of science and technology innovation bond ETFs [1]. Summary According to the Table of Contents 1. Review of the Bond - Snatching Market Driven by the Expansion of Credit Bond ETFs - As of June 20, 2025, the total scale of 8 benchmark market - making credit bond ETFs reached 106.6 billion yuan, an increase of 77.7 billion yuan compared to the end of March, with a 41.7 - billion - yuan increase since June. The expansion rhythm of index constituent bonds is significantly slower than the growth rate of credit bond ETF scale. In the Shanghai market - making aspect, the scale of Shanghai - based benchmark market - making ETFs accounts for 11.0% of the credit bond index constituent bonds, a 4.5 - percentage - point increase compared to the end of May. In the Shenzhen market - making aspect, it accounts for 12.4%, a 4.8 - percentage - point increase compared to the end of May [1][3]. - During the bond - snatching market, low - valuation transactions of constituent bonds emerge. ETF product preferences lean towards constituent bonds with larger outstanding scales and higher valuation stability. For example, in the Shanghai market, the number of low - valuation transactions and transaction amounts of the top 3 constituent entities have significantly increased since June, with an average low - valuation amplitude of - 1.7BP, a 1BP increase compared to May, and the transaction amount from June 1 to June 20 was 5.37 billion yuan, a 1.61 - billion - yuan increase compared to the whole of May. In the Shenzhen market, trading volume has increased significantly since the second quarter, with an average low - valuation transaction amplitude of - 4.5BP in June, a 0.9BP increase compared to May, and the transaction amount from June 1 to June 20 was 3.94 billion yuan, a 1.26 - billion - yuan increase compared to the whole of May [1][7]. 2. Game "Far": The Conduction Mechanism of Corporate Bond - China Securities - China Bond Interest Rates - The impact of low - valuation transactions on bond valuations is mainly reflected in two dimensions. Firstly, the valuation divergence between exchange - traded corporate bonds and comparable inter - bank bonds. For example, the valuation difference between 24 Zhonghua 16 and its comparable inter - bank bond 25 Zhonghua MTN001 was within 2BP before the end of May, but has widened to 7BP since June. Secondly, the impact of the surge in credit bond ETFs on the yield curve. The duration of Shenzhen credit bond ETF is 3.05 years, and that of Shanghai credit bond ETF is 4.11 years. The surge in credit bond ETFs boosts the allocation demand for 3 - 5 - year credit bonds, flattens the yield curve, narrows the credit spreads of medium - and high - grade bonds, and drives down the overall valuation of high - grade credit bonds [1][12]. 3. Game "发": Buying in the Primary Market Can Still Be Profitable During the Bond - Snatching Period - Newly issued science and technology innovation bonds in the primary market are mainly issued at low valuations, with the coupon rate at issuance being on average - 6BP lower than the valuation. Among 53 non - financial science and technology innovation bonds with comparable bonds, 13 are issued at high valuations, 40 at low valuations, 13 with a low - valuation exceeding - 10BP, and the maximum low - valuation is - 25BP. Currently, most science and technology innovation bonds' valuations are within ±2BP of comparable bonds. The secondary bond - snatching market may spread to the primary market. Since May, the situation of weak profit - making effects caused by low - valuation issuance of science and technology innovation bonds may change. Some low - valuation issued bonds still have potential for discovery, and it is recommended to focus on science and technology innovation bonds with a low - valuation of within - 5BP in the primary market [1][17]. 4. Game "扩": Analysis of Constituent Bonds Benefiting from the Issuance and Expansion of Science and Technology Innovation Bond ETFs - There are two main lines for constituent bond discovery: bonds with a remaining term of over 5 years and an outstanding scale of over 1.5 billion yuan. Long - term science and technology innovation bonds can significantly enhance the portfolio duration and scale expansion. Bonds included in both the science and technology innovation bond index and the credit bond benchmark market - making index may benefit from both the expansion of credit bond ETFs and the issuance of the science and technology innovation bond index. Among them, non - perpetual bonds may have stronger allocation potential [1][19].