光大证券研究·2025-09-14 00:05Market Overview - The China Convertible Bond Index increased by 0.4% during the week of September 8 to September 12, 2025, marking two consecutive weeks of gains, while the overall index rose by 2.1% [7] - Year-to-date, the China Convertible Bond Index has risen by 16.0%, compared to a 21.2% increase in the overall index, indicating that the convertible bond market has underperformed relative to the equity market [7] Performance by Rating - High-rated bonds (AA+ and above) decreased by 0.05%, while medium-rated bonds (AA) increased by 2.06%, and low-rated bonds (AA- and below) rose by 0.99%, showing that high-rated bonds underperformed compared to others [8] Performance by Size - Large-scale convertible bonds (over 5 billion) fell by 0.06%, medium-scale bonds (between 500 million and 5 billion) increased by 1.0%, and small-scale bonds (under 500 million) rose by 1.3%, indicating that larger bonds did not perform as well as smaller ones [8] Performance by Par Value - Ultra-high par value bonds (over 130 yuan) increased by 2.66%, high par value bonds (between 110 and 130 yuan) rose by 0.72%, and medium par value bonds (between 90 and 110 yuan) increased by 1.37%, while low and ultra-low par value bonds saw slight declines [8] Average Metrics - As of September 12, 2025, the average price of convertible bonds was 132.0 yuan, the average par value was 105.10 yuan, and the average conversion premium rate was 26.0% [9] - The number of outstanding convertible bonds decreased to 437, with a total balance of 607.83 billion yuan [9] Market Dynamics - The convertible bond market is currently experiencing high valuation levels, with all valuation metrics approaching or exceeding historical highs [10] - Since August 25, 2025, convertible bonds have not outperformed their underlying stocks, indicating a phase of high valuation compression [10] - Despite the strong demand for convertible bonds, the overall market remains in a high valuation phase, suggesting a need for strategic adjustments in asset allocation [10]