1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - In recent years, the index - type bond fund market in China has developed vigorously. In 2025, credit bond ETFs have witnessed significant expansion, and the newly issued 8 Shanghai - Shenzhen benchmark - market - making corporate bond ETFs have rapidly grown in scale. The newly listed benchmark - market - making corporate bond ETFs fill the gap in medium - long - term investment options, and credit bond ETFs are expected to continue to expand [1][11]. - Credit bond ETFs have prominent investment advantages, including policy support for expansion and innovation, "T + 0" trading in primary and secondary markets, comparable yields to medium - short - term bond funds with lower volatility, cost advantages, and transparent holdings which are friendly to bank self - operations [2]. - Shanghai - Shenzhen market - making credit bond ETFs offer considerable returns and controllable risks. They show stable long - term return capabilities and are relatively scarce products, making them reliable investment choices in the future [4][6]. 3. Summary by Relevant Catalogs 3.1 Credit Bond Index Funds are in the Initial Stage 3.1.1 Rapid Development of Index Bond Funds since 2024 - Due to factors such as the "asset shortage" in the bond market, declining interest rate centers, and the implementation of commercial bank capital regulations, index bond funds in China have entered a fast - development track since 2024. As of March 31, 2025, the management scale of index - type bond funds reached 1.2 trillion yuan, a 54.7% increase from the end of 2023, accounting for 13.5% of all bond - type funds [12][13]. - Credit bond index funds, as a new track, are in a "blue ocean" state of low stock and high growth. As of the end of March 2025, the scale of domestic credit bond index funds was 143.8 billion yuan (36 in total), accounting for 12.03% of the index - type bond fund scale. The scale has experienced multiple rounds of growth [13]. - Bond ETFs have attracted continuous capital inflows, and their proportion in index - type bond funds has been increasing. As of May 31, 2025, there were 29 bond ETFs with a total scale of about 28.92 billion yuan, nearly 2.7 times the scale at the end of 2023. In 2025, credit bond ETFs contributed significantly to the growth of bond ETFs [17][19]. 3.1.2 The Launch of the First Batch of Benchmark - Market - Making Credit Bond ETFs Fills the Gap - Interest rate bond ETFs have a complete product layout in various varieties and maturities, while credit bond ETFs are fewer in number and need to improve their tracking index varieties. The previously listed short - term financing ETF, corporate bond ETF, and urban investment bond ETF mainly provided medium - high - grade, medium - short - term allocation opportunities [22][23]. - The newly launched benchmark - market - making corporate bond ETFs offer medium - long - term investment options. The average remaining maturities of the constituent bonds of the Shanghai market - making corporate bond index and the Shenzhen market - making credit index are 4.63 years and 3.50 years respectively, and the issuing entities are mainly state - owned enterprises with mostly AAA ratings [23]. 3.2 Credit Bond ETFs Have Prominent Investment Advantages 3.2.1 Policy Supports the Expansion and Innovation of Credit Bond ETFs - In 2025, policies have been introduced to promote the development of credit bond ETFs. The China Securities Regulatory Commission proposed to steadily expand bond ETFs and introduce benchmark - market - making credit bond ETFs. The China Securities Depository and Clearing Corporation allowed credit bond ETFs to pilot margin - trading repurchase in the exchange and exempted the concentration constraints of credit bond ETF collateral [2][24][25]. - On May 29, 2025, 9 credit bond ETFs became the first batch of general pledge - style repurchase collateral, which enhances the product attractiveness of credit bond ETFs and is expected to promote product expansion and increased activity [25][26]. 3.2.2 Credit Bond ETFs Enable "T + 0" Redemption and Trading in the Secondary Market - Bond ETFs can achieve "T + 0" real - time trading in primary and secondary markets, which improves capital utilization efficiency and the liquidity of fund shares. Investors can redeem and trade on the same day, enabling efficient switching between bonds and fund shares [27]. 3.2.3 Credit Bond ETFs Have Comparable Yields to Medium - Short - Term Bond Funds - Although credit bond ETFs generally underperformed active credit bond funds in the past few years, their yields are now comparable to those of active credit bond funds. In most cases in the past 4 years, their returns were higher than those of short - term and medium - short - term bond funds, with significantly lower volatility [28][30]. - In the first quarter of 2025, the performance of the bond market was differentiated. Credit bond ETFs showed relatively weak performance, but overall, the return gap between credit bond ETFs and active credit bond funds is narrowing [30]. 3.2.4 Credit Bond ETFs Have Cost Advantages - The management cost of active credit bond funds is generally high, while credit bond ETFs have lower management and custody fees. As of the end of March 2025, the combined management and custody fees of credit bond ETFs were about 0.22%, 15bp lower than those of active credit bond funds [3][34]. 3.2.5 Credit Bond ETFs Have Transparent Holdings and are Friendly to Bank Self - Operations - Bond ETFs have relatively high transparency in holding information. They publish redemption shares daily, and the index compilation rules and constituent bonds are easily accessible. Compared with active credit bond funds with opaque holdings, credit bond ETFs help banks reduce unnecessary capital consumption under the capital regulations [3][35]. 3.3 Shanghai - Shenzhen Market - Making Credit Bond ETFs: Considerable Returns and Controllable Risks - In 2024, long - term interest rate bond ETFs performed well, while credit bond ETFs had relatively short - duration tracking indexes, with returns ranging from 2.23% to 4.27% and better - controlled drawdowns. In 2025, the bond market was weak, and credit bond ETFs outperformed due to the coupon advantages of underlying assets, with year - to - date returns ranging from 0.34% to 0.83% and controllable drawdowns [4][5]. - From the index perspective, the Shenzhen market - making credit index and the Shanghai market - making corporate bond index have good risk - return characteristics. Their return capabilities are between the 3 - 5 - year and 1 - 3 - year implied AA + credit wealth indexes, and their risk levels are similar to the Wind medium - long - term bond index [5][6]. - The rolling 3 - month investment performance of the Shenzhen market - making credit index and the Shanghai market - making corporate bond index shows that they have relatively high return ceilings compared to indexes with similar volatility [6].