固定收益点评：转债评级下调怎么看？

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - Rating downgrades in the convertible bond market from 2021 - 2024 showed high - frequency, seasonal, and industry - concentrated characteristics. Over 61% of downgrades were in June, with cyclical industries like industrial and materials dominating, and over 80% of downgraded entities being private enterprises in coastal developed areas. High - rating entities had lower downgrade risks [6]. - Rating adjustments drove market differentiation. High - growth sectors such as TMT, electronics, and non - ferrous metals had low downgrade risks, while industries like real estate, steel, and power equipment faced greater downgrade pressure. After a downgrade, convertible bond prices generally showed a "first decline then rise" pattern, and market sentiment was significantly affected by the rating window period [6]. - To deal with credit risks, a triple - strategy approach could be adopted: using equity - biased convertible bonds to hedge risks, seizing repair opportunities of undervalued low - price bonds, and using short - duration high - YTM bonds for defense [6]. 3. Summary According to Relevant Catalogs 3.1 Rating Adjustment Review 3.1.1 Historical Rating Adjustments and Market Performance - From 2021 - 2024, there were 193 downgrades in the convertible bond market, accounting for 4.51% of all rating adjustments. Over 61% of them were in June. Industries such as industrial and materials were dominant, private enterprises accounted for over 80%, mainly in coastal areas like Guangdong and Jiangsu. Downgraded entities were generally of weak quality, with issuance ratings concentrated at AA and AA - [6][8][10]. - The broader market index often weakened in May and June. The CSI Convertible Bond Index usually had a phased decline before the release of rating adjustment announcements due to risk pre - screening by institutions, leading to a chain reaction of "forward - priced risk → wider credit spread → market correction" [16]. - After a downgrade, convertible bond prices generally showed a "first decline then rise" pattern. For example, Zhongzhuang Zhuan 2 and Ying 19 Convertible Bond rebounded about 1 month after the downgrade [19]. 3.1.2 Identification of Downgraded Convertible Bonds - Factors leading to rating downgrades included performance losses, weakened solvency, low industry prosperity, equity issues, and liquidity risks. For example, Lingnan Convertible Bond was downgraded multiple times due to a plunge in EBITDA margin to - 119% and a high short - term debt ratio [6][23][24]. 3.1.3 Rating Adjustments Showed Structural Differentiation - High - growth sectors such as TMT, electronics, and non - ferrous metals had strong profitability and low downgrade risks. For example, the computer industry had a 471.86% year - on - year increase in net profit, the electronics industry had a ROE of 6.27% and a 37.24% net profit growth, and the non - ferrous metals industry had a ROE of 11.3% and a 53.23% net profit growth [26]. - Traditional industries such as real estate, steel, and power equipment faced greater downgrade risks. The real estate industry had a 274% drop in net profit, the steel industry had a negative ROE, and the power equipment industry had a low ROE of 3.6% [28]. 3.2 How to Select Bonds Around the Rating Adjustment Window Period 3.2.1 Equity - linked Convertible Bonds Could Hedge Credit Risks - In the face of credit risk shocks, equity - biased convertible bonds showed stronger price resilience. For example, during the "20 Hongda Xingye SCP001" default in 2020, equity - biased convertible bonds rose while others declined [32]. 3.2.2 Low - price Convertible Bonds Presented a Layout Window - During the credit adjustment window period, the low - price index usually showed a "first decline then rise" return characteristic. In 2024, low - price convertible bonds initially underperformed but later achieved the highest cumulative return for the year. Currently, attention could be paid to undervalued but cash - flow - stable bonds [33]. 3.2.3 Layout of Short - duration High - YTM Convertible Bonds - Short - duration high - YTM convertible bonds with a remaining term of less than 2 years and positive YTM could be selected. For example, Wanshun Zhuan 2 in 2024 outperformed the market under the protection of the put - back clause [36]. 3.3 Post - market Allocation Suggestions - Focus on three types of opportunities: high - growth equity - biased convertible bonds such as Hao 24 Convertible Bond; low - price bonds with credit mispricing like Jingneng Convertible Bond; and short - duration high - YTM defensive bonds such as Lvyin Convertible Bond [40].