9月信用，短债为盾二永为矛

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - In August, the "stock - bond seesaw" effect was significant. Interest rates first declined and then rose. Credit bond yields generally followed the upward trend of interest - rate bonds. Short - duration varieties were more resistant to decline, while medium - and long - duration ones were weaker. Looking ahead to September, credit bonds still need defensive strategies [1][11][12]. - After the adjustment in August, some bank capital bonds have fallen to show relative value. For example, 3 - year AA and above second - tier capital bonds are oversold, and 4 - 5 - year large - bank capital bonds also have certain value for accounts with different liability characteristics [29][33][37]. 3. Summary According to the Directory 3.1 High - Coupon Short - Term Bonds as Shields, Oversold Perpetual and Second - Tier Capital Bonds as Spears 3.1.1 Credit Bond Defense with Short - and Medium - Duration - In August, the "stock - bond seesaw" effect was prominent. Short - end bonds outperformed long - end ones. Credit bond yields generally rose with interest - rate bonds. Short - duration credit bonds were more resistant to decline, and institutions further shortened the duration to within 3 years. The net buying scale of credit bonds decreased, and the trading activity also declined [1][11][12]. - In September, credit bonds need defense. Bank wealth - management scale usually declines at the end of the quarter, reducing the demand for credit bonds. Credit spreads are at a relatively low level, and institutions will pay more attention to controlling drawdowns when investing in credit bonds [16]. - There are two defensive ideas for credit bonds. One is to select high - coupon individual bonds within 3 years. The other is to appropriately allocate defensive varieties such as 1Y inter - bank certificates of deposit and 2Y commercial financial bonds, which have certain cost - effectiveness compared with medium - and short - term notes of the same term [3][19][22]. 3.1.2 Bank Capital Bonds: Opportunities Arising from Declines - In August, the yields of bank capital bonds generally rose, and spreads widened. After the adjustment, some varieties showed relative value. For example, 3 - year AA and above second - tier capital bonds were oversold, and the yields of 3 - year AA second - tier capital bonds were equivalent to those of 3 - year AA perpetual bonds [28][29][30]. - The yields of 4 - 5 - year large - bank capital bonds rose significantly in August. As the decline deepened, insurance, wealth - management, and other asset - management products increased their allocation. For accounts with stable liability ends, they are still cost - effective coupon assets. For accounts with unstable liability ends, it is recommended to follow the interest - rate bond market for right - side layout [33][36][37]. 3.2 Urban Investment Bonds: Supply Recovery, Short - End and Low - Rating Bonds Resistant to Declines - In August, the net financing of urban investment bonds was positive and increased year - on - year but decreased month - on - month. The issuance of long - duration bonds decreased, and the weighted average issuance interest rate increased. The net financing performance varied by province [39]. - The yields of urban investment bonds generally rose in August. Short - end and low - rating bonds were more resistant to decline, while 10 - year ultra - long - term bonds were the weakest. Credit spreads showed differentiation [45]. - The trading activity of urban investment bonds was not high in August. The proportion of TKN and low - valuation transactions decreased compared with July. Short - duration bonds had an increase in trading volume, while 3 - 5 - year bonds had weaker trading [51]. 3.3 Industrial Bonds: Supply Contraction, Yields Generally Rising - In August, the issuance and net financing of industrial bonds decreased year - on - year. The issuance sentiment weakened, and the issuance proportion of short - duration bonds within 1 year decreased, while the proportion of 1 - 3 - year bonds increased. The issuance interest rates rose across the board, with medium - and long - duration bonds having a larger increase [54]. 3.4 Bank Capital Bonds: Net Financing Turns Negative, Trading Sentiment is Weak No detailed content provided in the given text for this part other than the title. It can be inferred from the previous content that in August, the net financing of bank capital bonds may have turned negative, and the trading sentiment was weak as the yields generally rose and spreads widened, and the relative performance was inferior to that of general credit bonds [28].